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• New Rails project -- Rails2 or Rails3?

  - by Earlz

  I have this new project I need to build. I want to have at least started on it by the end of this month. So which version should I use though? Should I just stick with the stable Rails2 or try to use Rails3 so I won't have to migrate later? Which one would you suggest for someone that is still learning Rails?

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• Import 5 millions records to the rails application

  - by Bogdan Gusiev

  We need to import large amount of data(about 5 millions records) to the postgresql db under rails application. Data will be provided in xml format with images inside it encoded with Base64. Estimated size of the xml file is 40GB. What xml parser can handle such amount of data in ruby? Thanks.

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• Mac text editor for Ruby on Rails

  - by kingjeffrey

  My text editor of choice for PHP work is Panic's Coda. But for Ruby on Rails, it's autocomplete feature is continuously in my way and ROR's standardization on 2 space tabs does not play well with Coda's settings. I've been going back to TextMate for ROR work, but was wondering if there were better options.

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• Add foreign key constraints to existing tables in Ruby on Rails (MySQL)

  - by randombits

  What's the best way to add foreign keys to my existing tables in Rails with an underlying MySQL database? clearly the solution should be done in a migration, as I want this versioned. Otherwise I'd create the constraints myself. I can't seem to find one, conducive response to they above. Again, the tables have already been created with previous migrations. I'm just going back now and adding referential integrity wherever it's applicable.

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• Rails 2.3.2: Accessing Model Specific Data in Another Model

  - by Gimli

  I'm using Rails 2.3.2 and using Paperclip to upload photos. I'm also using a slightly customized subdomain_accounts.rb to set some account-specific variables. My question is this: How can I set the bucket used in Paperclip to be dependent on the current account? Since this looks to be a model attribute set up early on, how can I override it later? Thanks.

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• Rails MVC Best Practices for Website Modules

  - by Randuin

  I am just beginning to build my Rails application and thus far I've followed a RESTful design and it's proven much easier to understand and organize the code and structure of the application. I have things like posts and comments. However for the front page. I want to display all the latest posts but also may be in the sidebar display things such as Latest Comments and Latest events. What's the best way to go about this while maintaining the RESTful philosophy?

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• How can I make Rails work when it is installed as a gem in Ubuntu?

  - by Koning WWWWWWWWWWWWWWWWWWWWWWW

  I have installed Ruby on Rails in Ubuntu 10.04: $ sudo gem install rails $ echo $PATH prints: /home/koningbaard/.gem/ruby/1.8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games But when I run $ rails --version, BASH tells me that rails is not currenly installed, and that I can install it with apt-get, which I don't want (I want it installed through gem). Can anyone help me where I can find it and how I can add it to my PATH? Thanks

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• Missing script/generate in Rails 3

  - by Tony

  I just installed Rails 3 and created my first app. The install of Rails3 + ruby 1.9 went very smoothly but I am missing the generate script in script/generate. I have created a new app from scratch with no options to verify. Any idea why this is happening and how to fix it?

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• activemodel for rails < 3

  - by brad

  Does anyone know if activemodel works with 2.3.5? I'm looking for this exact functionality (namely, validations for non-AR objects) and I'm trying to find a clean solution for a Rails 2.3.5 app. Or if anyone knows of a good gem/plugin to use that can mimic activerecord like validations for non AR objects, I'm all ears

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• finding process bottlenecks rails/ruby

  - by Ben

  I just got started with rails, and when I testing in development mode, I see in the logs that my Mailer action is taking 1175ms. Is there anyway to find out what exactly is the slow step? Also, there is a line that says (View:2, DB:1). I assume the DB means number of database lookups, but what about the view?

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• What does the option --template in "rails" command?

  - by Semyon Perepelitsa

  $rails --help ... Options: ... -m, [--template=TEMPLATE] # Path to an application template #(can be a filesystem path or URL). What does this option mean?

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• Rails on Google App Engine - Error on OS X development machine

  - by Phillip Parker

  Hi, I'm running through the Ruby on Rails tutorial at http://guides.rubyonrails.org/getting_started.html (adjusting where appropriate for Google's App Engine). All is well up till section 6.3: when I try to click "New Post", I get the following error: Internal Server Error (500) Request Method: GET Request URL: http://localhost:8080/500.html access denied (java.io.FilePermission /dev/urandom read) It works fine when I upload the application to Google's App Engine; it's just on my development machine (OS X 10.6) that it doesn't work. Thanks in advance.

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• rails: running a method on create only

  - by bandhunt

  I want to run a paperclip method on create only has_attached_file :file This method doesn't seem to accept the :on = :create that some other rails methods do. I tried: before_create after_create etc, but those didn't work. I also did: if :create How can I test if the controller is using the create method from the model? Thanks!

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• Rails wiki highlight/strikethrough version differences between article versions

  - by mark

  Hi I'm wondering how to implement highlighting of changes to user edited articles on a wiki style rails project. Since articles may be fairly lengthy I'd ideally like strikethrough and highlighting, similar to github and wikipedia for example. Despite searching around the net I've not really come up with much, apart from instiki which is a complete wiki application. Thanks in advance for any advice.

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• Interpolation not working on Rails generator

  - by Tom

  For some reason the code I have included below does not interpolate the variables into the template. It simply copies the file over verbatim. I cannot figure out why. https://gist.github.com/60484f7b57b06b6eb3e3 The Rails version is 2.3.4. Thanks in advance!

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• Rails engines extending functionality

  - by sinsiliux

  So I have an engine which defines some models and controllers. I want to be able to extend functionality of some models/controllers in my application (eg. adding methods) without loosing the original model/controller functionality from engine. Everywhere I read that you simply need to define controller with the same name in your application and Rails will automatically merge them, however it doesn't work for me and controller in engine is simply ignored (I don't think it's even loaded).

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• Ruby on Rails form page caching including authenticity_token

  - by jacob

  I have a simple Ruby on Rails form which includes an authenticity_token. Unfortunatly, I missed that when you page cache this page then the Authenticity Token becomes invalid. I'm glad I figured it out however. How do you solve caching in such a case?

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• In Ruby on Rails, routes.rb, if map.something will create something_path and something_url, does map

  - by Jian Lin

  In Ruby on Rails, routes.rb, if we create a "named route" map.something ":a/:b", :controller => 'foobar' it will also create something_path and something_url which are two methods usable in the controller and in the view. Does map.connect create something like that too? Otherwise, isn't map.connect somewhat disadvantaged in this way? I checked that connect_path and connect_url both aren't created automatically.

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• Parse string as if it were a querystring in Ruby on Rails

  - by Koning WWWWWWWWWWWWWWWWWWWWWWW

  I have a string like this: "foo=bar&bar=foo&hello=hi" Does Ruby on Rails provide methods to parse this as if it is a querystring, so I get a hash like this: { :foo => "bar", :bar => "foo", :hello => "hi" } Or must I write it myself? EDIT Please note that the string above is not a real querystring from a URL, but rather a string stored in a cookie from Facebook Connect.

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• How to empty/destroy a session in rails?

  - by tybro0103

  I can't seem to find it anywhere... How do you delete/destroy/reset user's session in rails? Not just one value but the whole thing.

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• Rails STI - Prevent base class from instantiation

  - by Jake

  Is there any way in a Rails STI situation to through an error when the base class is Instantiated? Overriding initialize will do it but then that gets trickled down to the subclasses. Thanks

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• url optimization in rails?

  - by piemesons

  Hello I want to create seo optimize url in rails.Same like done in stackoverflow. Right now this is my url http://localhost:3000/questions/56 I want to make it something like this:- http://localhost:3000/questions/56/this-is-my-optimized-url i am using restful approach. is there any plug-in available for this.

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• Redirecting to another controller in Rails

  - by Vitaly

  Hi, I'm trying to redirect from one controller to another in Rails and I am getting this error: undefined method `call' for nil:NilClass The code is pretty simple (in def create method): @blog_post_comment = BlogPostComment.new(params[:blog_post_comment]) respond_to do |format| if @blog_post_comment.save flash[:notice] = 'Comment was successfully created.' redirect_to(@blog_post_comment.blog_post) else render :action => "new" end end Save goes ok, the value gets into the database. How can I work around the redirect fail?

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• Store CSPC and UPC Codes in Rails

  - by Kevin Sylvestre

  What the best way to store CSPC and UPC codes are in Rails? I used integers with SQLite, but had overflow issues when moving to production. I've since switch to strings, but am not sure if a better generic datatype (needs to support SQLite, MySQL and PostgreSQL). Thanks.

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• Good Rails tutorial on How to build an RSS Feed aggregator

  - by reko

  Hi, I have been using Feed Zirra for some time and I like it. Now, I want to build one.. I am new to rails, Are there any good tutorials to buid RSS Feed aggregator? Gautam

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