nerbie69 off rails

Blog Activity - switching blogs

2009-08-31T18:59:00.000-07:00

My use of this blog is slowing down. i will emerge at my new blog. In this new blog you'll get all the same rails talk, just without the google/blogger chessiness.

Pre App launch jitters...

2009-08-31T18:53:00.000-07:00

I'm going into alpha/beta testing phase of my app. I'm pretty excited but also am kinda nervous.

Whenever you launch a product of any kind, it's human nature to second guess yourself and to ask "why am i doing this?" or "Will this work?". Or the big one, am i ready

Well you are never ready, it'll never be good enough, and you missed something. Big. Shit happens. Be a man and move on.

When you mess up your git pull

Remember this chunk of code:
sudo git reset --hard HEAD

Use that code snippet when you don't care about the changes on the local machine you are git pulling and your git pull request won't merge.

superclass mismatch for class ModelExampleGroup - Solved

2009-07-10T20:42:00.001-07:00

If you have been pulling your dick hair out, like i was, i thought i'd post this here, while i'm still in a rage.

Error

When you are running cucumber features, you get the following shit:
cucumber features superclass mismatch for class ModelExampleGroup (TypeError)...

At first, i commented out the remarkable line in environment.rb. I have no idea what this gem does, And i don't want to know. Hell, I only put it there because of a railscast i think, but this gem is fucking me up, so, again, i commented it out of the environment.rb file and everyone is happy. Good riddance.

FiX?

I just installed remarkable-rails instead. i guess the README in the github repo says how to do it. I've not gotten the error since.

30 days of Rails - Handling Flash Messages

2009-07-01T14:01:00.000-07:00

So, here i am trying to expand my closed world beyond Restful_authentication and well, basically any other technoweenie based plugin. I try my hand at Clearance

Clearance is a thoughtbot based gem which authenticates users in your web app. Out of the box, it only allows for email addresses as the login ID, which is fine for my stupid app i'm making.

However, in all my years of scaffolding, i guess i've only really used flash[:notice] for displaying my flash messages on an overall layout level. Clearance has flash[:success] and flash[:error].

The reason i found this out is because my clearance_features weren't working and i was getting 8 failures, due to the fact that I was only displaying flash[:notice]. A win for BDD i tell ya.

Gee mister, how'd you fix it

Like all expert coders, i went to the one place I can trust. Twitter. I sent out a tweet which read: twitter ruby fun: lame, hack or on track? < % = flash[:notice] ||flash[:success] || flash[:failure] % >

Most people hated this code, which is fine, as that is what i wanted to hear. While it will work, if i had a need for two flash messages at once, or if i needed to expand my flash message symbols, i'd be fucked. Enter @heycarsten

This dude turned me onto a pretty sweet gist he wrote up for me. A thousand thank you sir's to him.

Gist... Break it down hammer style.

Well everytime you see me, the hammer is on dootie...ok, hammer time is over.

Create a helper called flash_helper.rb and paste this gist into it.
inside the layouts directory, create a folder called partials and a partial inside of your layouts folder called /layouts/partials/flash_message.html.erb.
Paste this into it(stupid stupid blogger's formatting sucks ass... so you'll have to take the spaces out)
```
< p id=< % = "flash_#{type}" % > >
 < % = flash[type.to_sym] % >
< /p >
```

In your application_controller.html.erb you'll need to add this code to display your new fancy flash messages:
< % = flash_messages % >

In your css file, now you can create styles with the id flash_whatever. I used #flash_error{background-color: red;}, etc...If you are new to css, learn up on it son.

Yeah for heycarsten and many thanks to him for allowing me to post this code.P.s., i apologize for this shitty code formatting. blogspot sucks ass.

30 days of Rails - Hpricot parsing

2009-06-29T09:40:00.000-07:00

Scenario - You need some information off of a website, but there are around 100 rows. This information will also need to populate the name column of your model, so you need to clean up the data. Bascially you need to parse information from a paragraph or one big string. This is where hpricot and some ruby come in handy.

html string parser - Rake task

Here is the code i ended up using, and will try and explain it at the end

namespace :sponsor do desc "seed data" task :seed => :environment do require "open-uri" require "hpricot" doc = open("http://www.nascar.com/guides/sponsors/") { |f| Hpricot(f) } @snag = (doc/"#cnnContentArea").inner_html @snag.gsub(/<.*>/,'').split(/\n\t+/).map {|t| t.strip }.reject {|t|t=='' }.each { |t| Sponsor.create!(:name => t) } end end

Code explained

I needed to pull information from that actual url. All of this information lived within the div tag id cnnContentArea. inside the source of the html page, it was prepopulated with \n\t\t\t and the number of tabs varied.

Using hpricot, we open the url page and save it as an hpricot object (see the doc = line above.

Next, we take the saved page and pull out the content from the cnnContentArea div tag, and we save it as an instance variable @snag.

The last chunk of code, does the following:

The @snag string basically replaces itself without any of the paragraph tags (that what gsub does).
Next, the string is split into mini strings based on a delimiter, and in this case anything that matches \n followed by any number of tabs (\t). I was lucky to be able to do it this way.
We then iterate through each mini string(that's what map is doing) and we then strip all whitespace, before and after the words in the mini string. (see the block t.strip
As an added measure, if the mini array is empty, then it is rejected (courtesy of map)
Lastly, we then take the clean mini string and add it to our model, which in this case is a simple Sponsor model under the name column in the DB.

I have to thank emitilin from IRC as he spruced up my code, but i do take solace in the fact that i knew where to go and now i have an even greater understanding of ruby and rails. I'm sure in the comments you can point me to a method that does this in one fail swoop, but when you are learning ruby, you are a winner when you get to apply the knowledge to a problem you need fixed.

30 days of Rails - Model Associations

2009-06-26T08:39:00.001-07:00

You've picked the perfect model names for you new app, but you are unsure when to use a has many :through association or should it be a has and belongs to many association? Or should it be a simple many to many association. Wait, what about has_one and what the hell is a polymorphic anyways?

Well at this point in the game, you may understand what each of the Model Associations do, when you branch out from the basics, or don't use them for awhile, you end up forgetting when and where to use them.

In an effort to streamline the decision of when to use the various Model Associations available in your rails app, I've come up with a decision tree app called Model Association Decider. This decision tree will help you decide when to use a model association in rails. So use this app to determine which association you should use. Model Association Decider

30 days of Rails Series - Introduction

2009-06-24T11:32:00.000-07:00

Well here i am. I've taken a good look at what i need out of my life, computeristically speaking, and have decided that I am going to sink even more effort into learning Ruby on Rails, the one true and just framework, praise be unto him.

Thirty Days of Rails.. WTF?

What I've decided to do is document, a post a day for a month, about what i've learned in my rails journey from today moving forward.

I will focus on rails methodologies, techniques, optimization strategies, and anything else that i end up learning.

What the 30 days of Rails isn't...

This isn't a beginners class. I won't explain myself as indepth as I would, had I started from scratch. I'm starting with a loose grasp of rails knowledge obtained from a year and a half of using the framework. That means, i know how to do shit, but i want to learn MORE so that i can create apps trouble-free from here on out. Since I've made it my journey, I will pass these tidbits on to you, the gentle reader.

So let's see where this thing ends up. I take it that I'll probably end up with a lot of posts regarding TDD/BDD testing as i know sweet fuck all about it,however, I will post what i do find out, hoping it helps someone down the road.

Populating Select menus in Cucumber

2009-06-24T11:22:00.000-07:00

From the easy when you finally know what you are doing, column....

How the hell do you setup a select menu in a feature?

Well, it turns out it's easy. Not obvious to me, as nothing is in this testing BDD world, however. Basically For every select menu you want to use in a feature, you must create a Background scenario to populate that select menu before every feature is ran

Here's the code

Feature: Manage Driver lineup as an admin In order to manage all drivers As an admin I want to be able to create and edit a list of drivers. Background: Given I create a series "Nascar" Scenario: Login as admin Given I am logged in as an admin When I go to the admin homepage And I follow "New Driver" When I fill in "Name" with "Darryl Waltrip" And I select "Nascar" from "Series" And I press "Create" Then I should see "New Driver saved succesfully"

Nascar and all other known shit in the code above is copyright of their respective entities. I am just using it as an example, so chilax

Now in the background step you can just create the list of series(as i have it) using factories as so...

Given /^I create a series "([^\"]*)"$/ do |arg1| Factory(:league, :name => arg1) end

Enjoy. yes it was easy, just no one told me how to do it, so i thought i'd see if i could help another soul out.

Important Cucumber step that must not be missed!

2009-06-22T13:33:00.000-07:00

Ok, this may just be an aha moment for myself, but i always thought that when i looked at ryan's screencasts on Cucumber we're overly weird. That's right, i said it.

Now, why were they weird? Well, he started out his steps by including the following kind of Given statements:
Given I have zero articles # or Given I have an article named "Cheese"

Without this step at this time, there is no way to follow a article_path("blah") link at all. In my simple mind's eye, i thought there would be.

Lessoned Learned?

Stop being a moron and setup your Given statement to either start with a record or two for the model you are trying to BDD against, or make sure NONE exist, to start with a clean slate.

Rails vs Pylons - initial thoughts

2009-06-20T07:53:00.000-07:00

I know, I know! Comparing two frameworks is bound to be riddled with generalizations that don't help anyone and obvious features that are only "ah ha" moments to the writer of the post. However, I'm going to give you an account of my initial thoughts of Pylons, as compared to ruby on rails, a framework that I've been using for a year and a half.

Comparing Pylons to Ruby on Rails

Initial thoughts are how very similar these two frameworks are. Pylons basically admits that it takes well founded queues from rails. But who wouldn't?

If you were to design a framework today, and you think it through, any MVC framework will smell like rails, which has hundreds of contributors, all tweeking the code base. When a populist approach takes hold, you end up with some "trueisms"

All Pylons has done, from my inspection so for, is taken those trueisms as a starting point for their framework, and now are building off that on their own direction.

Common Features between Pylons and Rails

Here is what I noticed, 24 hours into trying Pylons, as it compares to Rails:

File structure is similar - Rails and Pylons both create a whole bunch of files to the project folder. Pylons however has more files outside of the project's directory that are used to setup information about the egg file. Think of an egg as a ruby gem, i guess.

Again, notice that inside the QuickWiki root folder, you have a QuickWiki folder where all your code goes into. This to me, looks like what we'd see in rails. Also, notice the models, Views(Templates) and Controller is mingling with the public folders, etc...

Routes - these seem similar, down to the map.connect. however, i've yet to find out if they implement Restful routing. They do seperate their controller commands by controller and RestfulController, so time will tell. Again, it's just been 24 hours. On first impression, Pylons routing actually can do a lot more, then what i've seen in rails. If this feature exists in rails, i've not seen or read about it in a year and a half. In Pylons, the first routes are the ones handled last, where as in rails, the bottom of the routes file gets executed last. Here is the example from their tutorial:

Notice again, that last line before the return. If you entered a url "/whatever" and it doesn't exist, the last route will create the page for you, based on it being the title. That title variable is passed to the show page and saved in the DB. Perfect for wiki applications. I don't think I've seen that in rails, to date.

Environments - Both Pylons and Rails have development, test and production environments. In pylons it appears that the environment files are housed in the outer file system, see image above to get what i'm saying. the inner file system appears to be where you'd put most of your code for the MVC part of things. Now in part two of this post, i'm sure to have written about production deployment and the differences there. if not, screw you Lulz.

Error Pages/ Debugging - Both have a cool stack error printout on your browser, when you fuck up. However, Pylons is interactive and you click on these arrows to get to the right code from within your browser. You can also send Pylons an email right from the error page, if you wanted.

Differences between Rails and Pylons - initial thoughts

I know i added some variances above too, but here is a list of things that is really different between the two frameworks:

You are making an Egg file, not a web app. - Ok, this is my spin on the whole thing, but technically you are making a python egg that will just happen to be served through the web. In rails, we are creating a web application in ruby. Not a ruby gem, not a ruby script, a full on independent web application whose sole purpose is to be viewed through an internet browser.
While i may be putting it too simply, it was something to get used to that when you are coding you are technically creating a python egg file that you can either, give to your friends to play around on their computer, or serve it through the web, or what have you. Maybe this has to do with the fact that you are creating a WSGI application. Read Pylons concepts here for more details.

Pylons needs to be running in a Python virtual environment, in order to work. What that means is you can't just call Pylons create -t MyProject willy nilly. No big deal, just something to get used to.

Pylons uses something similar to ActiveRecord, but in the python world it's called SQLAlchemy. From the pylons site: SQLAlchemy is a powerful Python SQL toolkit and Object Relational Mapper (ORM) that is widely used by the Python community.

No Migration files - All migrations are setup in the __init__.py file of the models directory. Personally, rails has it right, with it's easy to understand migration creation, in my opinion. However, Pylons isn't hard, it's just, well, more.

Templating Engines - Instead of ERB, they use Mako, by default. It's not that strange when learning mako, as some of the nomenclature is similar.

Conclusion

Both have their pros and cons. I don't mind Pylons, and I'm going to try and create a project in Pylons, something other then the wiki from their tutorial. I'll be bloging my way through that project, and giving you the usual uncandidness you've been accustomed to. If you want to expand your web framework knowledge past rails, Pylons is a good choice to start with, without the huge learning curve.

Spam Off - Acts_as_Snook Tutorial

2009-05-18T04:43:00.000-07:00

You wrote an awesome blog post. You've enabled comments for this awesome blog post, only to find that some crappy spam turnkey operation has hit your post with 1000 cialis ads, and the other wang pill advertisements.

Listen, Comment Spam sucks ass. If you've ever searched for an answer to stopping it, your research points you to one of four ways to stop comment spam traditionally. These are:

No comment spam filters at all - Users are allowed to comment willy nilly.

Captchas - weird images that look as though your seeing through beer goggles, whose text usually has to be written into a text field to prove your comment is coming from a human.

Site Members can comment only - the site's membership, of which you are visiting, are only allowed to comment on stories. I am using that method in my blog, atm.

Moderated comments - your honest feedback about a post can only be posted, if a nameless/faceless drone 'approves' your comment worthy of being posted. Doesn't say much for transparency.

While all of these above methods work to keep spam to a minimum, (and really that's all you can hope for i.e., minimal spam), there are glaring flaws in each and everyone one of the above methods. Whether it's accessibility, too cumbersome to keep up with, or too communist, most of these methods have some kind of tradeoff.

Enter Acts_as_snook

From the README:ActsAsSnook is a simple and elegant method of handling comment spam that doesn’t rely on CAPTCHAS or Javascript or external web services. It uses a point based system to detect common traits of comment spam.

The acts_as_snook plugin is a great way to keep spam at a minimum. Rather then asking the user to do anything, acts_as_snook "scores" each comment based on a scoring system by Jonathon Snook. Once the comment has been saved into the database, the comment receives one of three possible spam statuses:

Spam - the comment didn't pass the scoring system and will have a status of spam, set in the database.

Ham - the comment passes the scoring system and it's status is set to ham in the db.

Moderate - the comment is too close to call spam or ham, so it's status is set to moderate and is awaiting moderation.

About the Plugin

If anyone trolls in #rubyonrails, the IRC chatroom, you'll know the author of the acts_as_snook plugin, rsl.

He is also responsible for getting this song in my head, at the time of writing. Bastard.

Tutorial - How to use the Plugin

Don't cut and paste!!! this stupid blogger crap is garbage! So if you want to cut and paste, you'll need to delete the spaces after and before each < or > bracket.

Assumptions - you know how to create a typical blog application that will use embedded comments at the end of each post. I'm assuming that you will have two models Post andComment. Before you begin, get a working Post model ready, as this tutorial is only about adding a Comment model that uses acts_as_snook. Lastly, you'll want to make it prettier once your done these steps, so that is up to you do after, post modem.

You have a working Post model, right???
Get your Post model working how you want it to work. The inner workings aren't important for this tutorial.

Generate a Comments Model and a Post Migration
We'll use the default settings in acts_as_snook, so that means we need our database to house these Comments table columns as outlined below.
script/generate rspec_scaffold Comment author:string email:string url:string body:text spam_status:string post_id:integer

Since we want to display how many GOOD comments we have (i.e, the ham), acts_as_snook will run a counter cache for each Post's ham comments. All you have to create the following migration file and add the migration column information to it:

script/generate migration AddHamCountToPost

In your new migration file add the following:

class AddHamCountToPost < ActiveRecord::Migration def self.up add_column :posts, :ham_comments_count, :integer, :default => 0 end def self.down remove_column :posts, :ham_comments_count end end

Run Migration with
rake db:migrate

Add Acts_as_Snook functionality

First make sure Post has_many Comments and Comments belongs_to Post.
Next add this to your Comment.rb file
acts_as_snook
Damn, that was easy.

Fix the Comment views

Right now, your views are set to show all comments, that is not good. Let's make your views shine! So in your Post#show view, here is what i've done (since i show my comments at the end of each blog post, my @comments= @post.comments. If you don't understand that, read up on associations in the rails guide). I'll explain the code further afterwards.
```
< h1 >Comments< / h1 >
   < % unless @comments.blank? %>
    < % @comments.ham.each do |comment| %>
     < p >
      < % if comment.url.blank? %>
     < %= comment.author %> 
      < % else %>
      < %= link_to comment.author, comment.url %>
      < % end %>
     says:< br/ >
     < %= comment.body %>< /p>
    < % end %>
   < % else %>
    < p>Be the first person to comment!< /p>
   < % end %>
```
Simply put, we only want to show the ham(the good comments) and not the spam(shitty comments). So we iterate through each ham comment, using the acts_as_snook supplied method ham.

The rest of this code, just shows the comment in a certain way that i wanted it to appear, your mileage will vary.

Showing a Comment Count

One last little touch, is showing your readers how many comments each post has. I put this information on the Post#index page, usually. Here's one way you can implement a count for all ham comments.
< % @posts.each do |post| % > < h2 >< %= link_to post.title, post % > ::~ < %= pluralize post.ham_comments_count, "Comment" % >< /h2 > < p >< %= truncate post.body, 25 % >< /p > < % end % >
Notice again, we iterate through the posts and for each post, we add their ham_comments_count.

Conclusion

Acts_as_snook gives us a lot of easy to use methods, which i'll write more about in Acts_as_Snook part 2, which will include a moderation area for administrators. Hopefully Acts_as_snook will take care of your comment spam nightmares, while giving you more time to sing, same as it ever was. Letting the days go by....

Upcoming update to Theme support plugin

2009-05-05T11:57:00.000-07:00

I'm updating the theme support plugin to work with 2.3.2 now. jystewart has done a tonne of work with it, but his plugin doesn't yet use the helpers, which my version does.

We'll either combine forks or go our separate ways depending on how things play out, so stay tuned!!!

Here is the theme support repo on github. Follow the fork link to jystewart's if interested.

UPDATE - Use jystewart's github theme support for 2.3.2 and mine for 2.2.2 rails app

For some stupid reason the core guys flip flopped on a code insertion that screwed up 2.2.2 and I had to fix it so that the helpers worked in rails 2.2.2.

However, now that they reverted to code from 2.1.2 in 2.3.2, the old helper methods, which the jystewart version didn't touch, work fine. So rather then mess with it, it's easier just to use jystwart's version.

Lastly, in rails 3.0 i think it will revert again, so stay tuned.

When in doubt... Factory it out...

2009-05-01T20:11:00.000-07:00

Boy did i have a doozy of a day trying to get some basic tests to pass, after i added some validations to a basic rspec_scaffold. Using the barebones tests, adding the validates_presence_of and a validates_uniqueness_of both borked the test... which was fine, i expected that.

What i didn't expect was that when i commented out both validations, my create test spec method would still work. in essence, it didn't. It could have been something i did, whatever. I fixed the failing tests by simply switching to Factories, instead of fixtures, or whatever the base rspec scaffold would use in a model test.

If you are getting some weird errors, simply try to use factories instead. Try out Factory Girl by Thoughtbot for an example of one that I can say works. haven't tried too hard to get machinist to work yet, but heard good things too.

Rails Template FTW

2009-04-25T19:42:00.000-07:00

Boy oh boy, rails templates kick ass. I just made a template that has everything i need to start an user authenticated monthly subscription rspec app.

What's this template got that i ain't got?

Other then charisma and a good sense of style, it has

Restful_authentication w/ AASM && will_paginate - creates your User and Session automatically
Active_Merchant - sets you up for adding monthly subscription code
Subdomain_fu - allows for easy account creation with subdomains.
Testing: Rspec, Cucumber, machinist, faker, factory_girl too
rspec scaffold an account model to begin your journey

Rails templates are good to get you going but they are just a starting point, you still need to add certain bits of code to make stuff work, like
require 'aasm'
to your config/environment.rb file.

How to Rock the Template

Type the following into your console
rails -m http://github.com/nerbie69/rails-templates/restful_merchant_account.rb app_name_here -d postgresql
Remember that the code above will create a postgres based rails app, so supply whatever DB flag you want, mysql, couchdb etc, and replace app_name_here with whatever you want to call you app.

Rails Visionaries - Gems/Plugins Top Contributors

2009-04-15T07:30:00.000-07:00

The following is a list of the people/companies whom i feel are leading the pack when it comes to the most useful gems and/or plugins. My criteria is that the gem/plugins are almost KEY to any rails app that needs them, and that this person/company has more then ONE key gem/plugin. FYI - I left out DHH, he gets enough accolades. Let's begin

Technoweenie github repo - Where would a lot of rails apps be without restful_authentication and attachment_fu, just to start. When you add in Acts_as_paranoid and his work with Mephisto, we owe this dude a big thanks for making components of what we do in rails easier and more efficient.

thoughtbot github repo - This company keeps pumping out hit after plugin/gem hit. In the field of testing, they help simplify our testing needs by putting out shoulda and factory girl. In the authentication field, they gave us clearance and paperclip. In the error notification field, they offer hoptoad, (which is rad).

mbleigh github repo - Now mbleigh is a dude that should get mad props, and you should get to know his work, if you aren't familiar yet with him. Essential gems/plugins such as subdomain_fu and twitter_auth are just two of his current 24 projects he has on his repo. When you add acts_as_taggable_on and his ubercool uberkit (for easier form and menu creation), you realize how truly original his work is to our community.

Phusion github repo - Passenger makes all production app serving easier. Back in the day, it was mongrel that made things easier... things keep evolving. However, i can't see how it could get any easier beyond Passenger, which makes setting up your slice/VPS extremely easy. And from their website they describe the Ruby Enterprise Edition as Transparently improve scalability and efficiency of Ruby on Rails web applications.

Shopify github repo - If you handle anything to do with ecommerce you must bow at the generosity of the shopify folks. You have active_merchant, active_fulfillment and active_shipping. easy enough to use, powerful and well thoughtout and maintained.

Honourable Mention

There is no question to the visionary impact that these individuals have made to the rails community and furthering it's progress. In the spirit of this post however, these luminaries have given us fantastic testing apps, while this post was looking at those who have given us more then just one type of gem/plugin.

aslakhellesoy github repo - Cucumber is making BDD testing easier for everyone. A killer gem that makes learning testing palatable.

dchelimsky github repo - RSpec. enough said. (I do realize it is a team of core dev's who create this, but for clarity purposes, his name is usually at the forfront of any rspec conversation).

thinking_sphinx github and acts_as_ferret github - Good search plugins and gems. You are either a Ferret guy or a Sphinx guy.

Well that is the list. Enjoy

Struggles with webrat via cucumber

2009-04-14T07:03:00.000-07:00

I know that this will end up being pebkac... but it still is annoying

So i have a problem. webrat is not acting how i thought it was supposed to. Ryan Bate's railscast on cucumber made this shit look so easy. And for the most part, it is.

However, when you go beyond what he had in his railscast - beginning cucumber, webrat takes me off the rails very fast.

to the Code...

all i wanted to do was select my choice from a dropdown menu. According to webrat/cucumber webrat_steps.rb file it should be
I select "option" from "field"

So in my scenario, i used the field name "tweet[style_id]" and the option "story".
I select "story" from "tweet[style-id]"
You may be wondering what that tweet[ ] business is all about, well that was the only way my scenario would go green, is if i used the label name in that style of code. Since i am not using a symbol in my
f.label :body, "I want to show this text" if you were simply using f.label :body, you wouldn't need the tweet[ ] syntax.

Updates

i did find this ruby forum post, however he simply had the wrong description text. Since my text is one word, and i copied and pasted from the view source code, i don't think that is my problemo. Maybe i should try using the label field without the quotes?

Weekend Rails Challenge #1

2009-04-03T18:15:00.000-07:00

Thanks for participating in the first ever Weekend Rails Challenge.

The rules are simple for this challenge:
You have 48 hours to code a "For-Profit" based rails app using the twitter api. Also your app must have a colour scheme revolving around the following hex code #7C6D8A. Lastly you app Must be online and useable, hosted by yourself of course on your vps slice or node.
The challenge will run for a month and a winner will be chosen based on the app which gains the best combined score based on five different criterion.

Judging the winner

The winning app will have demonstrated the best TOTAL score of the following criteria:

(20%) Quality of Code - Following the rails mantra of DRY and readability, a mark will be given to you based on how well your code follows these coding principles. Usually you would test along the way but we've decided that in 48 hours that is not mandatory for this challenge.

(20%) Site Popularity - The site with the highest Alexa ranking at the end of the month will receive a full 20 points, 18 for the second best rank, down to 12 for the worst ranked site. 5 bonus points are rewarded for a mention in twitters sidebar menu (located below the profile of a twitter user)

(10%) Site Look and (10%) User Interface/Interaction - The site with the best looking and most functional user interface will gain top points in this category. Places 2nd, 3rd, and 4th will recieve 2 points less then the preceding ranking

(20%) Revenue made in a month - The site with the most revenue made during the month will gain top points in this category. Places 2nd, 3rd, and 4th will recieve 2 points less then the preceding ranking.

(20%) Most Creative Use of the given rules - An app that demonstrates the most creative and functional use of the given rules will gain top points in this category. Places 2nd, 3rd, and 4th will recieve 2 points less then the preceding ranking.

How will the scores be judged?

No idea, but i know that we participants will vote and we'll ask someone or a few people from ROR to vote on things like coding, site look and feel and creativity.

Submission Deadline:

We'll report back who ends up in the final challenge eventually, but if you want to enter, you MUST post a comment below regarding the purpose or solution you came up with for your app by 12 noon, as of you own time zone, on Saturday April 4th.

Good Luck Challengers

Best of luck and hey who knows... you could get a great money making app out of it. At worst, you made some new friendships and had a good weekend coding and learning.

Creating a Rails Plugin - thoughts behind Active_Affiliate

2009-03-14T06:47:00.000-07:00

I'm about to launch a new whizbang plugin. Really excited about it as i think it will add something to the Rails community and show that i have learned SOMETHING over these last 18 months.

I just wanted to document the thought process for this plugin, without talking about the code. Hopefully you find it interesting, or even helpful

Thought Process

I started with the premise that if you run a successful web app, that charges a membership/account fee, you will need some way to bring in new customers. Affiliate programs are a way to leverage the Internet Marketing initiative and your app.

There really are just two main players in the affiliate space, commission junction and Linkshare. There isn't anything wrong with these programs and chances are you'll need them too, but hosting your own affiliate program and managing it how you want, was a dream i wanted to fulfill.

Since i code in rails, and there was no solution, i created one. Here are some of the features.

Affiliate Signup through a route /affiliates

Affiliates get their own unique code

Primitive banner ad generator that will populate link with their code

Affiliate code tracking put in session variables, and saved on customer purchase, through your checkout/signup sheet.

Currently, paypal id's are needed so the user can get paid.

Reporting for both the Affiliates and App Management.

I'll be updating active_affiliate on github as features are implemented.

Weird script/generate scaffold behaviour

2009-03-12T08:24:00.000-07:00

As always feel free to correct me if i'm wrong, but here is some wacky behaviour i got when i used the following code to generate scaffolding from rails 2.2.2 core (i.e., no plugins or scaffolding generator plugins at all)

script/generate scaffold affiliate name:string user_id:integer

What was happening to my code was views not being found. restful paths not being found, even when i triple checked my routes file. To solve this i simply reran the code with a capital letter for the model name, as shown below.

What should the code be??

script/generate scaffold Affiliate name:string user_id:integer

Treat scaffold like every model is always CamelCase

By that i mean no matter what the name of your model is going to be always Capitalize the main words for that model. So single word models like Ass, Border, User are good. Never start with a lowercase ass, border or user.

This is just a rule i follow, as i've yet to see it let me down. It might just have been a momentary blip we all experience in our coding life, however capitalized models have never shown me that blip to date, so i'll run with it!

Rails Testing Confessions

2009-03-09T11:46:00.000-07:00

Father, My name is pjammer and i have confession to make. I've made 4 web apps and didn't test one of them, in a rails sense.

That's right. Not one of my apps were tested using shoulda, coulda, woulda. Rspec was just a figment of someone's imagination, when i launched my apps, cause it sure wasn't in my mind's eye. Factory girl is a movie about some broad from the 60's and Object daddy just sounds creepy

Let me repent for my testing sins!!!

Father, I'm here today to repent for the sins of not testing my apps. I really want to learn

Learning about testing is like searching google for a future thought. Lots of ideas you can get out of it, but nothing that says "HERE IT IS MY SON".

This post won't help you either, but it should give others who want to make a lot of money, teaching other users how to write tests for rails, some kind of "IDEA" for a tell all book about testing.

The Big Idea

Father, why hath thou forsaken my learning? Learning Rails was easy... tonnes of help on blog posts, forums, etc... yet when it comes to LEARNING HOW TO TEST, doth hast left that chapter blank in thy bible

Here is what i think someone could make a mint from writing a book that steps a user through building tests from TIT to TAIL.

For instance:

What is testing and why it's important
There are four facets to testing
- Functional Tests
- Unit Tests
- Integration Tests and
- Fixtures
Take each testing facet above and step through each assertion and when to use each assertion and 5 or 6 real life examples for each.
Focus just on Test::Unit, Shoulda, and Machinist & Faker for Functional and Unit Testing, as well as fixtures
Lastly, use some cool visual tool like webrat or Selenium

Father, thank you. I will say my 10 hail mary's

In closing god would be happier with a book such as this, as less rails noobs and testing noobs would be praying for this kind of mundane nonesense. Leaving more time to fight the good fight.

PostgreSQL on Mac OS X from source, with gem!

2009-02-18T20:27:00.000-08:00

This one was a bitch for me. I started with the one click installer from the postgresql website, not worth the time. maybe it worked, but sure as shit didn't appear to work for me.

Steps i took to get PostgreSQL and postgres gem on my macbook (Intel)

I'll source these links later, but basically I:

downloaded the source code from Postgres's site.

Used the following commands
./configure \ > --with-includes=/usr/local/include \ > --with-libraries=/usr/local/lib make sudo make install

put it into my $PATH directory (so annoying when it's not there)
PATH=$PATH:/usr/local/pgsql/bin
FOR THE RUBY GEM I used the following code because i'm on a fricking intel mac thanks to acts_as_blog
sudo env ARCHFLAGS='-arch i386' gem install postgres -- \ --with-pgsql-lib-dir=/Library/PostgreSQL/lib \ --with-pgsql-include-dir=/Library/PostgreSQL/include

Hopefully this saves someone some time and heartache!

There is far too much to detail here...

Acts_as_blog post has everything you need. it should work for you. if it doesn't you need to look at creating your db user through psql.

My list of items to finish before the big launch.

2009-02-06T09:42:00.000-08:00

I just thought i'd post the items that i need to finish before i launch. As i cross each one off of the list, i'll report back on how i tackled each problem. Some answers may take a whole post.

The List

figure out up to 7 day activation period for Accounts. Not a free trial but You have up to 7 days to activate.
add site for sale area.
Completed Ranks. Moderator roles is a feature i'll add later.
Add forum roles to forum and make extendible if needed.
add user google adsense code section.
When new plugins are added, I'll need to create an instantiator based on the menu items the user has selected. #how to handle old members based on a new plugin being added? How do other sites handle it?
add body[:url] to mailer based on the current url they are on.
look into using AASM which creates a state for the accounts based on the presence of profile_id and then the current status of the user, as taken from paypal. (Users can cancel a monthly subscription on paypal, i need to know who is doing what)

Some of this shit may not make sense to you, however you will be able to tweek it to your exact situation.

How to deploy when Capistrano doesn't work for you.

2009-01-25T09:59:00.000-08:00

What happens when Capistrano just doesn't work for you?

Ok, maybe i'm the only one with that problem, but i've tried on three different server providers, linode, gogrid and slicehost. All had the same problem, somehow, someway my user privleges were f!@#cking it up.

When a tutorial i've trusted tells me to put my directory to chown www-data, well, i am going to do that. In order to do this i need to sudo everything, thanks to ubuntu, and it's a best practice i can wrap my feeble mind around.

How to deploy a rails app when Capistrano just ain't working for you.

I've not been able to find one source on the net that showed me simply how to deploy a web app using just git, and ssh. So i'm open to better ways, however, i've tested this way for the last 3 weeks and am pretty happy with it.

Prerequisites

You are using

GIT locally and on your server
a full Rails setup (I'm using passanger)
a server that hosts both your git repository and your app
you've setup both your app and git repository on that server box too

You are also using www-data as the group and user who "owns" the app on the server.
That is just too much shit to talk about right now.

The code below walks you through what to do AFTER your initial setup of your server and app environment.

On my laptop:
Make the changes to your app, when every test passes and when you are ready to go to production do the following:


git status # on my machine changes appear in red.

git add . # notice the dot after the add

git status # if you see anything in red that should also be included use the second git commit line below

git commit -m "Add your message about what your committing here." #most of the time use this

git commit -a -m "Added all files including untracked ones" # Again only use this one if there are files that appear in red and should also be included in your commit.

git push # pushes your code to your server.

SSH to server, all these commands are done from your server:

End

Well i spent 2 or 3 days easily, 4 - 8 hours at a time trying to make capistrano work. The process above takes 3 minutes. Someone else can do the math, but in order for this way to be less efficient, i'd have to do some 300 commits before i regret not having capistrano. One day i'll need it to deploy to 100 servers or something but for now, i can live with the process above.

theme_support and formatted routes (rss feeds)

2009-01-21T06:42:00.000-08:00

Today I was trying to get my web app to allow subdomains to provide an rss feed. it didn't work.

I'll be posting a solution when one is found, however, i'm hoping this wasn't pebkac again.

Solution

In your controller, where you are making the rss call, you must render layout false. Here is an example:

format.rss { render :layout => false }
I'll file this one under the learn something new, that is easy, everyday column.

After some investigation, it appears that theme_support plugin doesn't support themed rss feeds, when you enter them in the head section of an html page. I'm working to allow this in the plugin.

passenger and the case of the non-redirecting account. -solved cause i'm dumb.......

2009-01-10T08:27:00.000-08:00

Let me explain what is going on here. In my code I want the user to create an account (from www.domain.com) and then, upon successful creation of the account, I want them to redirect to the new account's url, at say account.domain.com.

Redirect doesn't happen in Production

I'm using Passenger and Apache on a ubuntu server.

On my dev box: Mongrel from the rails app, the usual script/server stuff

So on dev, it works fine. I get redirect with reckless abandon.

In production, a different story. I get the following error (using safari, yet to try with other browsers...).Safari can’t connect to the server. Safari can’t open the page “http://www.example69.com/accounts” because it could not connect to the server “www.example69.com”.
Why me? I should say, I can type my new url into the browser, no problem. it works fine, but it's not what I want my user's to have to do.

Did you solve this?

Embarrassingly I had a link to localhost:3000 as my redirect. Ignore this post. it's left as a reminder when i get too fucking cocky.... as a mark on my pride.

3 reasons to hate your new iphone

2008-12-26T15:30:00.000-08:00

As much as I'd like to say I'm 100% happy with my iphone, i must confess that I am not 100% happy with the iphone at all. The post that follows outlines the three reasons why I am not too happy with my iphone:

You MUST jailbreak your iphone, in order to do anything cool with it
Lack of bluetooth functionality when synced to macbook
Apple's general malaise with bending over to the Telco's

In Canada, did you know that you are allowed to tether your iphone to your laptop. It's a selling feature to idiots like me who commute and aren't always at a wireless connection, and the thought of 3G surfing to improve your ruby on rails app got you off, big time.

The one little wee bit of information no one told you, until you shelled out the money and signed the contract, was that unless you jailbreak your iphone, Apple doesn't have a legal app to allow you to connect via bluetooth to your laptop. It's this lack of Tethering Ability that burnt my britches. I feel it's the man stain on an otherwise pristinely made bed, and i was told to sleep in it.

Now, why must a consumer be forced to jailbreak an iphone, when HE/SHE doesn't want to. I have no desire to do anything like this, nor should a consumer be asked to. He/she gets home, clicks the App Store app and prays to find a tethering app. He/she doesn't. He/she's choice: Jailbreak and risk bricking the phone or surf via Safari on iphone instead of being able to git push from your macbook, which is what i want to do in the first place.

One company had balls. NullRiver. I used their MediaLink app to connect to my PS3. Really good stuff, cause it just works. However, at last check (story Sept 13, 2008) they had their app pulled down from the App store by Apple.

Lack of bluetooth functionality when synced to macbook

Seriously, when you sync up your iphone to your macbook/imac and get that going, did you know that there is nothing you really can do through bluetooth? Maybe in the future, there will be skads of things to do, but generally, you can't do sh!t out of the box, legally.

Users of the "lesser" phones may be shocked to hear that you can't even file transfer via bluetooth from your macbook to your iphone. I believe my first samsung in 2000 had that ability.

Apple's general malaise with bending over to the Telco's

Now i'm a pretty loyal Apple customer. I've got a whole family on imac's or macbooks, a few on iphones, one on AppleTV even. I'm no fanboy who makes the trip to hear Steve Job's speak at MacWorld, I've never read an apple based blog nor do i have an account on ehmac either, but i do troll on the #mac channel often, in IRC. So my heart is with Apple. Linux was too nerdy for me, windows... is... well, windows, so Apple is the only OS that i can tolerate, have fun with and still feel secure. I also like their attitude. Here we are. like it or not, this is Apple. You don't like it, that's fine, there are alternatives out there for you.

So how can a company with this hipster attitude, take it large from a couple of stupid Ma Bell castaway TeleCom companies? Or worse, a Canadian provider!?!?! Grow a set of balls, force these babies to allow their users to surf the 3G network via their laptop, bluetoothily through their iphone. For the amount of people that would do it, and i doubt it would be that many, as most people surf walking in a mall or at a friends house when they say "Hey, look i got an iphone and i can surf for porn from your bathroom!"

So what can be done nerbie69?

I'm glad you asked. Nothing can be done, except get NullRiver's app back onto the AppStore. There is no reason for it not to be there. Also, make sure it is priced around the $29 - $49 mark. People are nothing but cheap and this price point will allow only those who really need it to buy it.

The Telco relationship won't change. Money grubbing won't change, but Apple you can price the NullRiver app accordingly so that you keep your loyal fans happy and still save face with the skidmarks from the Telco world who are trying too desperatley, like an actress getting her 12 face lift, to keep their looks and cool.

Solved: ApplicationController has been removed from the module tree error.

2008-12-20T10:09:00.000-08:00

A copy of ApplicationController has been removed from the module tree but is still active!
You got this error... and now you don't know what to do. Well i can offer a suggestion or two on how to fix it.

Symptoms

You may be trying to update a plugin that is conflicting with ApplicationController. You'll also notice that this error happens when you try to reload the same page, or even move a different view within the same directory. For instance, if you load plugin/index and the try to reload OR go to another link say plugin/new, you get this error.

Hit me nerbie69! Solve my problems

Well dude, you got way too many for me to solve, but this one is on me.

All douchery aside, i solved my error by deleting some of the leftover cruft of having a generator plugin, that i converted into a engines based plugin. github nerbie69/railstat plugin check out the forked project for the current generator based script.

#OLD code require_dependency 'path_tracker' class RailStatController < ApplicationController include PathTracker before_filter :extract_subdomain ....

#new code notice the difference class RailStatController < ApplicationController unloadable include PathTracker before_filter :extract_subdomain ...

Since ApplicationController is an unloadable class, we too had to match it's unloadability in our app/controllers directory of our engines based plugin. Also, we don't need the require statement, as you do when you are using a generator plugin, if you are referencing the lib directory. The engines takes care of that for you too.

Wrap it up Johnny!

Ok, engines rock. Also, you can apply this code to any of these stupid errors you might get in the future for other controllers and plugins.

Sources: rails trac from 2006.

Rails Engines are awesome!!!!

2008-12-16T19:47:00.001-08:00

Some of my loyal fans may be shocked to know that i just tried the Rails Engines plugin. Officially titled engines plugin on github.

So easy, and exactly as advertised

Sometimes, try as we may, things aren't always as advertised in this community of ours. So it is a good when things go exactly as planned

Instructions on using the plugin are well written in the README, so i won't bore you with those details, but if you have ever wanted to make a plugin that had the same familiar structure as your rails app', then this is for you. All you need to do is create a plugin and then add the same app directory structure in the root folder of the plugin.

Predictions

Theoretically you can make all of your controller, models and views as plugins, making your app act almost like it's own SAAS appliance. If you have a generator style'd plugin, there is no reason not to use engines. Less coding for you, the plugin creator.

Examples of Hot Rails Engines Action (HREA?)

In fact, i just put the finishing touches on my fork of the rails stat plugin, that was purely a generator script, basically. Now in my forked version, the engines plugin takes care of generating static code within an app. And that is pretty frickin cool.

Working with Generators in Rails - Lessons Learned the hard way.

2008-12-13T07:52:00.000-08:00

I'm updating a plugin that works in Rails 2.2.2 development, yet borks in a production site using 2.1.0.

undefined method `render' for # Rails::Generator::Commands::Create:0x7fdf1caaa2c8

right now, Here is what the problem was

in my generator script i had the usual code
m.template "app/views/rail_stat/hits.rhtml", "app/views/rail_stat/hits.rhtml" m.template "app/views/rail_stat/lang.rhtml", "app/views/rail_stat/lang.rhtml"

Now inside of hits.rhtml is the following line
< %= render :partial => 'menu' % >

For some reason the render part fudges everything up. if i delete that line, the files go through with no problem.

Solution

When generating erb templates, the Rails::Generator needs to use an extra percentage sign whenever you call specific erb calls. For instance, i only had used < %= render :partial => 'menu' % > but i should have used < %%= render :partial => 'menu' % >
Again, notice the extra % percentage sign in the second code bit. I'm sure there may be a better reason but the second % sign acts almost as a buffer and tells m.template to print the erb code in the new file? Again, that may be too simplistic of an answer, but that is what it seems like to me.

Finally. Theme_Support fully Working in Rails 2.2.2

2008-12-09T11:00:00.000-08:00

I feel like singing. That is how happy i am.

Theme_support plugin for rails is fully working in Rails 2.2.2

I'll work with jystewart from github to get the fix onto his version, as that is what i got to work. Here is the link to Theme_support on github. Alegria!

Transferring an existing app to a new server

2008-12-05T20:24:00.000-08:00

Let the good times roll gents. Rick Okasik and the cars once sang that song about this exact moment in time. The day I transferred my existing ruby on rails site from a shared host to slicehost.

Preamble - Reasons why, etc...

My shared hosting account at a2 has come to an end. They have been having a couple of days worth of outages here and there. Nothing too bad, usual disk failure kinds of stuff, but what really got my goat was this. A bug in cpanel that didn't allow the mongrel server to restart. So my site would be down for an eon, because they restarted the server or apache or something (never got straight answers). Now i'm a patient guy, but in terms of my website as a business, they were messing with my livelyhood. Good intentions or not, it sucked for that reason.

So the time has come to grow up and move to slicehost. I've tried Linode but i prefer slicehost. Both really offer the same principle offerings and are strictly/typically linux based servers, so i liked these two. But for some reason, slicehost resonated more with me. Just a thing i have, no fault of anyones.

Steps involved in transferring an existing app to a new server

I'll be chronicling my journey through transferring a rails app from a shared host to a VPS like slicehost. Here are the steps I took to move the server:

Backed up MySQL database on old server

Ftp'd backup db to new server

Copied app code to new server

Imported DB onto new server

Fixed app settings to let it run properly, such as action mailer, etc.

Updated DNS records to reflect the switch.

For the record, i already have a working passanger/mail system/rails stack on slicehost. I will chronicle what I needed to do to get this to work. However, your mileage may vary and if you screw up anything, even because of my instructions, i'm sorry, but that's on you and i won't and can't be held responsible. You've been warned.

Good, got that crap out of the way, on with the show.

Export Mysql database from old server

I followed this Slicehost article on exporting and importing db's. It was pretty easy so far.

Zip code on OLD server

As i'm using the command line for all/most of this transfer, a great resource for zipping files was About.com. Although not as sexy to use, it had all i needed. I used the following commands:

zip -r app_new app -x \*.log

Notice the -x which will exclude your stupidly huge log files. I need to find a better way to manage them.

By the way i went from 40mb zip file with logs to 10.5mb zip file. need i say more

FTP code and .sql file to New Server

No explanation really needed here. I used ftp from old server to my desktop and then i used sftp onto new server at slicehost. Your mileage may vary, but you get the idea.

Unzip code into new /var/sites/ directory

I unzipped the code into a web-applicaton chmod'd directory.
unzip app.zip

Import DB.sql file into the NEW Server

The Slicehost article on exporting and importing db's again came in handy here. So easy, so good.

Setup your new DB user

I ended up creating a new user, just to be safe. Probably no need to do this, as you can keep the same one from your old server, but just in case. I just followed this Slicehost article on creating Mysql users. Grant All privleges, as he shows in the article.

install all your outstanding gems

Since i forgot which gems i need, and I am not ready to upgrade this app to 2.2.2 yet, as it's in rails 2.0.2, I need to go to the old server, and pull off all the gems i used, and reinstall them on the NEW server. Once this is done, we can setup the config files for actionmailer and the db itself.

Well it looks like it's the old rmagick gem that was the troublsome one. Thanks to enrailed.net for helping me out with this one. It's weird to me how i followed the same steps using aptitude and I got an error, but if i use apt-get, i was fine... whatever eh! Oh and gem install rails -v 2.0.2 just hung there, so i said screw it, and i'm going to go with the one i have on there 2.1.2.

Lastly for all UBUNTU Hardy users that don't know.... update your ruby gems. the POS that is shipped with that ubuntu version will disappoint you, if it hasn't already. Thanks to Mike's post here at a fresh cup blog you'll find out how more. Simply put, just run
sudo gem install rubygems-update sudo update_rubygems

Update Config and database files

so you'll need to update anything in your config/environment.rb file that was server specific, such as actionmailer settings. Also, make sure your config/database.yml file reflects your NEW database.

Update your server settings

I, like most of the free rails world, are now using passanger to serve our app. If you aren't, run, don't walk, to the nearest passanger downloading station and fricking do it! Mongrel's time has passed, much like zed shaw's rants. It meets my needs, that is for sure.

I added the following code to passanger:
ServerName sitename.com ServerAlias www.sitename.com DocumentRoot /var/rails/sitename/public

Since i have two other sites on my slice, i need to make sure that the NameVirtualHost *.80 is only added to the "first" site or in other words, only once.

The best passanger, slice from scratch tutorial is Part One and Two of sys admin chronicles.

Change your DNS records on your slice and with your Registrar

You'll need to change where your DNS is pointed, i.e., from the OLD server to the NEW one. Slicehost makes that part easy with their DNS manager. For the registrar part, you need to go to the registrar of record, in order to point it to the new settings. I change the registrar's record first, then i change mine on slicehost. But again, that's what i've done.

Restart the App and you are done

I think that is it friends. You should have the same app as you had before working on a new server. This wasn't rocket-science but it was a good list of 'things you need to do' when converting over to a new server.

To do...

I'll post how i got a multi-website postfix configuration going on my slice. I've yet to find an easy tutorial that works... but i'm looking. Thanks everyone. The good times are rolling again.

Theme Support plugin update for Rails 2.2- Part 2.

2008-12-03T17:40:00.000-08:00

So i have tried my damnedest to make this work. I get an error as follows:

undefined method `compute_public_path' for #
So, for some reason in theme support i am getting this crazy error, where in Rails 2.0.2 i did not, and in another project, which was Rails 2.1.2 using the "old" theme support, i did not get either

Possible Solution (TBD)

It appears that the compute_public_path method is now a private method of the class AssetTag in the module ActionView::Helpers::AssetTagHelpers.

What I still need to figure out

How in the hell do i link this 'sub class' AssetTag to the Module line in the rhtml_helpers.rb file in theme_support? I've tried various configurations to no avail. Who out there is a plugin god and can help out?

Theme Support plugin update for Rails 2.2

2008-12-02T07:30:00.001-08:00

Commentary: This plugin always has to be updated after every version of a rails upgrade? I don't know why that is however? Perhaps it's the most unluckiest of plugins? carma? something... but like a trooper, it keeps on licking and ticking.

If you are using theme support and have recently upgraded your app to 2.2, you'll need to fix this plugin before you get anywhere. luckily jystewart from github has patched the plugin to work with 2.2. from what i see it may even fix it for a while, so that finally we won't have to keep patching this thing.

URL: http://github.com/jystewart/theme_support/tree/master

Updating Rails app from 2.0.2 to 2.2.2

2008-11-29T06:07:00.000-08:00

Ahh the fun begins. In this post you will find the 'gotchas' I had with updating an existing established app from rails version 2.0.2 to the new version of 2.2.2.

Cache_template_extensions Error

Here is the partial stack error

/Users/nerb/.gem/ruby/1.8/gems/rails-2.2.2/lib/initializer.rb:530:in `send': undefined method `cache_template_extensions=' for ActionView::Base:Class (NoMethodError)

Solution! - There was mention of an error at line 15 of my environment.rb file. I went to the environments/development.rb and deleted the line
config.action_view.cache_template_extensions = false I read on the interweb that this cache_template_extensions no longer is used or is has been deleted.

Now maybe the time to update Plugins.

As a public service, I wonder if now is the time to update your plugins, if it's been awhile. Some may never change (Acts_as_tree), but some change fairly rapidly (Restful_authentication).

For Restful Authentication, I know there is a new password feature that doesn't jive with the old passwords. However, since I also need to update this plugin, I wonder if it's better to scrap the --old-passsword flag and investigate why the new way is better? Could it be that I may change all of the current user's passwords on my site? Only if there is a dang good reason. A dang good one.

Acts as ferret : only have one instance per development computer...

2008-11-23T10:27:00.000-08:00

Symptoms

I kept getting this stupid error
(druby://localhost:9010) /Users/nerb/.gem/ruby/1.8/gems/activesupport-2.1.2/lib/active_support/dependencies.rb:279:in `load_missing_constant': uninitialized constant Browser (NameError)

How to solve this error

Basically I got this error because Acts as ferret was running in another app on my development box. Just do a simple script/ferret_server stop in the OLD app. Return to the new app and start the ferret server by doing script/ferret_server start

Hell, i thought it had to do with my recent updating of rails to 2.2.2, however, it did not.

Serialize... what the #@#&%!!?

2008-11-21T15:03:00.000-08:00

Ok. For all my loyal readers, here is one thing that just wasn't jiving for me.

Serialize is Killing me!

Serialize :column is code that should be put into your model.

What that little line does is save whatever code you save to that column as yaml. Oh and make sure :column is a type :string.

Without doing anything to the column upon saving, this is an example of what could be in your db.

column: "--- \n- subscription\n- membership\n"

Now supposedly, all i have to do to use this string of yaml is to call it like i normally would, say in a for loop, and it 'un yaml fies' itself. No such luck.

What tricks do you guys use when you are serializing? i'll take any help here.

Update 11-28-08

As my exploits from Railsforum will show, i got it to work finally. Thanks to rob-wtf from Railsforum for the help!

P.s. I bookmarked their paperclip article... it's pretty good. Well minus the windows stuff.

Recurring Payments using PayPal Express and Active Merchant

2008-11-16T06:54:00.000-08:00

I needed a payment solution that took recurring payments for my rails app. Most of the tutorials out there use either a US based merchant account provider, or are based in the UK. I guess canadians are out to lunch. Oh, and what's worse was that none of them really touched on subscription based models, or as it turns out, recurring payments.

Caveat: Now i am not here to take credit for what I'm about to write. I only write this post as a 'mashup' of two great men and their tutorials on the subject. I just took these two tutorials and used the good from both of them to come up with what you are about to read.

The fine men who authored these posts

Cody Fauser - Active Merchant extraordinaire

Cody is from all accounts the man, if not only the public face, of Active Merchant. His Active Merchant Peepcode pdf (a must read and only 9 bucks!) is the go to guide for learning all about Active merchant from the man himself.

Jon Baker - Paypal Express Recurring Payments add on for Active Merchant Plugin

From his homepage"As well as leading the Rich internet Application at Trigger Software Ltd, he is CEO and Entrepreneur of Vibrant Apps a small company based in Cornwall that makes useful and useable apps."

On with the show...

Basically, i used the framework from Cody's Paypal Express Payments with Active Merchant for my controller/view actions and I used the plugin extension from Jon's post Paypal Express Recurring Payments using Active Merchant.

The sum of these two parts became what i needed to get a basic subscription for my app, and now for you too.

Gimme the High Level overview nerbie69!

Will do. Oh, and i assume you already know how to create a rails app, and that you are following usual rails behaviour and will know that everything in here is based off of being inside your rails app, when you run any code. This tutorial is probably above beginners so i assume anyone reading this kinda knows what they are doing and are just stuck at how to implement subscription based models easily.

Create your Paypal Sandbox developer account and instantiate an API credential from your seller account

Install Active Merchant from github

Insert Jon Baker's Paypal express Recurring Payments nv . rb file in your new Active Merchant plugin

Create your controller and views

Test your new subscription model in your browser

Pinch yourself... it was that easy.

So there you have it. It's the simple steps version of what you are about to do.

Step One - Create your paypal sandbox developer account

Go to https://developer.paypal.com to set up your paypal developer account.
You can find better instructions on the developer site, but it isn't too hard and out of scope for this tutorial. However, make sure you get the api credentials from the Seller account(_biz). I.e., you must log in as the seller, in the sandbox, and follow Cody's instructions on how to set up the API.

Step Two - Install Active Merchant

Go to github and install the Active Merchant plugin: script/plugin install git://github.com/Shopify/active_merchant.git I'm using the plugin here because it's easier to add a file, which is the next step.

Step Three - Adding the paypal_express_recurring_nv.rb file to Active Merchant

Download or copy and paste the following file paypal_express_recurring_nv.rb and put it in the following directory: /vendor/plugins/active_merchant/lib/active_merchant/billing/gateways/

The plan is to get this into active merchant in a future release. We all have a part in making sure this happens, by emailing activemerchant's maintainers and saying how helpful this was. Plus then we can fix any bugs and extend to make it even better.

Step Four - Create your controller and views in your rails app

From here on out is where i mashed the two tutorials together. First create your controller and views: script/generate controller subscriptions index confirm cancel error

Now add the following, as Cody says, to the top of your application.rb controller
include ActiveMerchant::Billing
Also, don't forget to put your ActiveMerchant into test mode, as outlined in his tutorial.

I'll paste the full controller code, so you can see it in all it's glory. Notice, as Cody says, we didn't need a view for checkout, so that is why we didn't add 'it', to the generate code above.class SubscriptionsController < ApplicationController def index end def cancel end def error end # Confirmation step is the actual step that sends money. def confirm response = gateway.create_profile(999, params[:token], :reference => "34") if !response.success? @message = purchase.message render :action => 'error' return end end # The checkout method used to pass the values to paypal. The description is shown to the user in their paypal account. def checkout setup_response = gateway.setup_agreement("Monthly subscription fee $9.99 USD", :return_url => url_for(:action => 'confirm', :only_path => false), :cancel_return_url => url_for(:action => 'index', :only_path => false) ) redirect_to gateway.redirect_url_for(setup_response.token) end private #Here's the gateway info. def gateway @gateway ||= PaypalExpressRecurringNvGateway.new( :login => 'Seller_232323455_biz_api1@site.com', :password => 'W32RW53TE64Y7', :signature => 'A90EWQRLSDA0SA.SAD0FASWEQ4ls0sl20S0SLD0.223.w' ) end end

Views

The views are easy to setup and obviously could say anything. Here is what i did, to get a generic subscription message setup:

# Index.html.erb:

  < h1 >Site Subscription< /h1>
  < p >Thank you for your decision to subscribe to this site.

  < p >Your order total is $9.99 / month

  < p >
   < % = link_to image_tag('https://www.paypal.com/en_US/i/btn/btn_xpressCheckout.gif'), :action => 'checkout' % >
  < / p >

The error messages can stay the same as what cody has, i believe.

The confirm view really doesn't have to say anything other then Thanks! All the magic happens in the controller when the response comes back. I know that i am probably going to add my own app specific controller functions to this confirm, such as creating their profiles and setting certain site variables, now that they have subscribed to become 'one of the cool kids'

Step Five - Test in your browser and revel at your genius

That heading says it all.

Thanks for reading and enjoy.

I hope that you enjoyed this little tutorial. Subscription handling hasn't been easier thanks to Jon Baker, active merchant and all their hard work.

The tail of two admin panels

2008-11-15T05:44:00.000-08:00

What are the most popular ways of handling an admin area in a web application? Since i develop in rails, my focus will be on rails, however i do love the built in admin panel from django. Excuse me DHH for I have sinned....

Admin Concept #1 - separate namespace in url (i.e., /admin)

When adding an admin namespace, the following steps should be followed:

change routes
setup new directory structure in app/
change views to reflect new namespace
secure access to the new admin namespace

1. Change your routes to reflect the new namespace. for instance:

map.namespace :admin do |admin|

admin.resources :posts

admin.resources :categories

admin.resources :forums

admin.resources :products

end

Just for fun, run rake routes in your app, and look at all of your new lovely routes!

2. Include a new admin directory under your app/controller, app/views and app/helpers. E.g., app/controller/admin/nameofcontroller.rb.

You will need to change the first line of your code to read: class Admin::YourController < ApplicationController

Any redirects in your controller code must be changed to reflect your new namespace. simply replace your existing @variable with [:admin, @your_variable] in the redirect. This code will redirect to the proper show method.

3. For any new or edit views, you need to change your form_for to reflect your new namespace as well. Changing the @variable again to reflect the new [:admin, @variable] should do the trick in most cases.

Also, your routes have changed, so you will need to change your restful routes in all of your new admin/model views. Usually you only need to add "admin_" to the existing route. e.g., posts_path would become admin_posts_path.

Concept #2 - inline administration.

Allows users to administer their site based on their user Id. If the user is set to admin in the database, then more options appear on their profile.

That user would then have access to /settings, for instance, because of their admin status.

The Settings model would be set up as usual, i.e., no namespace needed, but a before_filter would be used to allow access only to that admin user.

Question: Is there a third concept? What other ways can be used to allow for an admin "area"? Please post your comments, as I would love to hear your thoughts.

nerbie69 off rails

Blog Activity - switching blogs

Pre App launch jitters...

When you mess up your git pull

superclass mismatch for class ModelExampleGroup - Solved

Error

FiX?

30 days of Rails - Handling Flash Messages

Gee mister, how'd you fix it

Gist... Break it down hammer style.

30 days of Rails - Hpricot parsing

html string parser - Rake task

Code explained

30 days of Rails - Model Associations

30 days of Rails Series - Introduction

Thirty Days of Rails.. WTF?

What the 30 days of Rails isn't...

Populating Select menus in Cucumber

How the hell do you setup a select menu in a feature?

Here's the code

Important Cucumber step that must not be missed!

Lessoned Learned?

Rails vs Pylons - initial thoughts

Comparing Pylons to Ruby on Rails

Common Features between Pylons and Rails

Differences between Rails and Pylons - initial thoughts

Conclusion

Spam Off - Acts_as_Snook Tutorial

Enter Acts_as_snook

About the Plugin

Tutorial - How to use the Plugin

You have a working Post model, right???

Generate a Comments Model and a Post Migration

Add Acts_as_Snook functionality

Fix the Comment views

Showing a Comment Count

Conclusion

Upcoming update to Theme support plugin

UPDATE - Use jystewart's github theme support for 2.3.2 and mine for 2.2.2 rails app

When in doubt... Factory it out...

Rails Template FTW

What's this template got that i ain't got?

How to Rock the Template

Rails Visionaries - Gems/Plugins Top Contributors

Honourable Mention

Struggles with webrat via cucumber

to the Code...

Updates

Weekend Rails Challenge #1

Judging the winner

How will the scores be judged?

Submission Deadline:

Good Luck Challengers

Creating a Rails Plugin - thoughts behind Active_Affiliate

Thought Process

Weird script/generate scaffold behaviour

What should the code be??

Treat scaffold like every model is always CamelCase

Rails Testing Confessions

Let me repent for my testing sins!!!

The Big Idea

PostgreSQL on Mac OS X from source, with gem!

Steps i took to get PostgreSQL and postgres gem on my macbook (Intel)

There is far too much to detail here...

My list of items to finish before the big launch.

The List

How to deploy when Capistrano doesn't work for you.

How to deploy a rails app when Capistrano just ain't working for you.

Prerequisites

End

theme_support and formatted routes (rss feeds)

Solution

passenger and the case of the non-redirecting account. -solved cause i'm dumb.......

Redirect doesn't happen in Production

Did you solve this?

3 reasons to hate your new iphone

Lack of bluetooth functionality when synced to macbook

Apple's general malaise with bending over to the Telco's

So what can be done nerbie69?

Solved: ApplicationController has been removed from the module tree error.