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• adding custom fields dynamically to a model

  - by pankajbhageria

  I have a model called List which has many records: class List has_many :records end class Record end The table Record has 2 permanent fields: name, email. Besides these 2 fields, for each List a Record can have 'n' custom fields. For example: for list1 I add address(text), dob(date) as custom fields. Then while adding records to list one, each record can have values for address and dob. Is there any ActiveRecord plugin which provides this type of functionality? Or else could you share your thoughts on how to model this? Thanks in advance, Pankaj

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• uninitialized constant OpenSSL::Digest::SHA1 in rails 3 and ubuntu

  - by Anand Agrawal

  Hi All, I am trying to integrate restful_authentication plugings into my rails 3 application. I integrated this in windows, but while trying to integrate it to ubuntu I am facing an error "uninitialized constant OpenSSL::Digest::SHA1" I googled for the solution but still unsuccessful. I am unable to load the file, "require Digest/SHA1" Now, i tried to run console screen. and tried to check the Digest file by putting print statement, this gives false, while in the irb it returns true. If anyone has come across such problem

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• Dynamic dropdown search box

  - by glebm

  Are there any gems that would help me make a search box like the one for tags on stackoverflow? (Rails 2.3.5, required IE7 support and graceful no-script fall-back) P.S.: Do these boxes annoy you or do you think it's a good thing to have one?

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• Design an api using rails and change the forgot password functionality

  - by ragupathi

  I have been using rails for developing web applications and now i need to do design an api for iphone application and since i used respond to json it also produces json but i use devise for authentication in my web application and when i send email and password along with the api it gives out {"user":{"authentication_token":"Lsusyd27ewgasga63","email":"[email protected]"}} and there is forgot password functionality in the iphone app but in the web application when clicking on forgot password button it sends an email to the users email, whereby the user has to go to his mail and click on the link sent and it will take to the change password path and after changing it the user will be login but in this iphone app i want to send the password to the user mail and the user can use that password and login. How can i do this? Also do i have to create new controllers for api or the web application controller is enough if it respond as json? please help me.

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• ActiveRecord: Produce multi-line human-friendly json

  - by Mika

  Using ActiveRecord::Base.to_json I do: user = User.find_by_name 'Mika' {"created_at":"2011-07-10T11:30:49+03:00","id":5,"is_deleted":null,"name":"Mika"} Now, what I would like to have is: { "created_at":"2011-07-10T11:30:49+03:00", "id":5, "is_deleted":null, "name":"Mika" } Is there an option to do this? It would be great to have a global option, so that the behaviour be set depending on dev/live environment.

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• How do I send signed emails from ActionMailer?

  - by James A. Rosen

  I'm using GMail as my SMTP server. I have that configuration working just fine: # config/initializers/action_mailer.rb: ActionMailer::Base.smtp_settings = { :tls => true, :address => "smtp.gmail.com", :port => "587", :domain => "www.example.org", :authentication => :login, :user_name => "[email protected]", :password => "it's a secret" } I also have a public/private RSA key pair in config/ssl/rsa.public and config/ssl/rsa.private. What do I do to sign the emails before shipping them off to GMail's SMTP server?

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• Acts as Tree with Multiple Models

  - by Joe

  I've got several models that I'd like to relate together hierarchically. For simplicity's sake, let's say I've got these three: class Group < ActiveRecord::Base acts_as_tree has_many :users end class User < ActiveRecord::Base acts_as_tree belongs_to :group has_many :posts end class Post < ActiveRecord::Base acts_as_tree belongs_to :user end Under the current acts_as_tree, each node can individually can relate hierarchically to other nodes provided they are of the same type. What I'd like is to remove this restriction on type identity, so that SomePost.parent could have a User or a Post as its' parent, and that SomeUser.parent could have another user or a group as its parent. Any thoughts?

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• How do I temporarily monkey with a global module constant?

  - by Daniel

  Greetings, I want to tinker with the global memcache object, and I found the following problems. Cache is a constant Cache is a module I only want to modify the behavior of Cache globally for a small section of code for a possible major performance gain. Since Cache is a module, I can't re-assign it, or encapsulate it. I Would Like To Do This: Deep in a controller method... code code code... old_cache = Cache Cache = MyCache.new code code code... Cache = old_cache code code code... However, since Cache is a constant I'm forbidden to change it. Threading is not an issue at the moment. :) Would it be "good manners" for me to just alias_method the special code I need just for a small section of code and then later unalias it again? That doesn't pass the smell test IMHO. Does anyone have any ideas? TIA, -daniel

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• Rails Tableless Model

  - by mplacona

  I'm creating a tableless Rails model, and am a bit stuck on how I should use it. Basically I'm trying to create a little application using Feedzirra that scans a RSS feed every X seconds, and then sends me an email with only the updates. I'm actually trying to use it as an activerecord model, and although I can get it to work, it doesn't seem to "hold" data as expected. As an example, I have an initializer method that parses the feed for the first time. On the next requests, I would like to simply call the get_updates method, which according to feedzirra, is the existing object (created during the initialize) that gets updated with only the differences. I'm finding it really hard to understand how this all works, as the object created on the initialize method doesn't seem to persist across all the methods on the model. My code looks something like: def initialize feed parse here end def get_updates feedzirra update passing the feed object here end Not sure if this is the right way of doing it, but it all seems a bit confusing and not very clear. I could be over or under-doing here, but I'd like your opinion about this approach. Thanks in advance

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• Why do i get a circular reference exception when calling to_json on an ActiveRecord::Relation

  - by midas06

  In Rails 3 (beta 3 on 1.8.7), when calling to_json on a relation i get a circular reference exception. Converting that relation to an array first, and THEN calling to_json works. Code That fails: Model.where().to_json (Where model is any model in your Rails 3 app) Code that works: Model.where().to_a.to_json This can be reproed on the console. Has anyone else run in to this? Is this expected?

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• Internationalization of static pages with Rails

  - by Gavin

  I feel like I'm missing something really simple and I keep spinning my wheels on this problem. I currently have internationalization working throughout my app. The translations work and the routes work perfectly. At least, most of the site works with the exception of the routes to my two static pages, my "About" and "FAQ" pages. Every other link throughout the app points to the proper localized route. For example if I select "french" as my language, links point to the appropriate "(/:locale)/controller(.:format)." However, despite the changes I make throughout the app my links for the "About" and "FAQ" refuse to point to "../fr/static/about" and always point to "/static/about." To make matters stranger, when I run rake routes I see: "GET (/:locale)/static/:permalink(.:format) pages#show {:locale=/en|fr/}" and when I manually type in "../fr/static/about" the page translates perfectly. My Routes file: devise_for :users scope "(:locale)", :locale => /en|fr/ do get 'static/:permalink', :controller => 'pages', :action => 'show' resources :places, only: [:index, :show, :destroy] resources :homes, only: [:index, :show] match '/:locale' => 'places#index' get '/'=>'places#index',:as=>"root" end My ApplicationController: before_filter :set_locale def set_locale I18n.locale=params[:locale]||I18n.default_locale end def default_url_options(options={}) logger.debug "default_url_options is passed options: #{options.inspect}\n" { :locale => I18n.locale } end and My Pages Controller: class PagesController < ApplicationController before_filter :validate_page PAGES = ['about_us', 'faq'] def show render params[:permalink] end def validate_page redirect_to :status => 404 unless PAGES.include?(params[:permalink]) end end I'd be very grateful for any help ... it's just been one of those days. Edit: Thanks to Terry for jogging me to include views. <div class="container-fluid nav-collapse"> <ul class="nav"> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown"><%= t(:'navbar.about') %><b class="caret"></b></a> <ul class="dropdown-menu"> <li><%=link_to t(:'navbar.about_us'), "/static/about_us"%></li> <li><%=link_to t(:'navbar.faq'), "/static/faq"%></li> <li><%=link_to t(:'navbar.blog'), '#' %></li> </ul> </li>

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• Is it possible to use partials with the layout option inside of a controller?

  - by Janak

  When try I following code in a controller, the view renders without using the layout def xyz render :partial => 'platinum_home', :layout => 'platinum_layout' end But If I do the following inside the partial <% render(:layout => "platinum_layout") do %> blah blah blah <% end %> It works just fine, is the first example not possible using rails?

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• Problems installing RMagick with Paperclip in Rails 3

  - by Smickie

  Hi, I'm trying to use paperclip in rails and when I'm doing the "bundle install" I'm getting the following error: Can't install RMagick 2.13.1. Can't find Magick-config in /usr/local/mysql/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/X11/bin:/Users/seanhinton/.rvm/bin What I'm wondering is how do I install RMagick (is that what I need?) on my machine (it's OSX 10.6)? Cheers!

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• Force current_user path

  - by pcasa

  Currently users can access their "profile" through many paths. localhost:3000/users/current_user localhost:3000/users/current localhost:3000/users/id# How can I make it that they can only get to their "profile" through localhost:3000/users/current_user

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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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• Rails Plugins Load Path - I have ActiveRecord Models in a Plugin, How do I load them without Namespa

  - by viatropos

  I have a bunch of models for Oauth services, things like: TwitterToken GoogleToken There are OAuth versions and OpenID versions for some, so I decided to logically organize my gem like so: lib lib/my-auth-gem lib/my-auth-gem/oauth lib/my-auth-gem/oauth/tokens/google_token ... lib/my-auth-gem/openid/tokens/google_token ... I would like to be able to name my models GoogleToken, rather than MyAuthGem::Oauth::Tokens::GoogleToken. How do I do that? This will be for Rails 2.3+ and Rails 3.

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• Redirects in RoR: Which one to use out of redirect_to and head :moved_permanently?

  - by scrr

  Hello, we are making a website that takes a generated incoming link and forwards the user who is clicking on it to another website while saving a record of the action in our DB. I guess it's basically what ad-services like AdSense do. However, what is the best way to redirect the user? I think html-meta-tag-redirects are out of question. So what other options are there? head :moved_permanently, :location => "http://www.domain.com/" This one is a 301-redirect. The next one is a 302: redirect_to "http://www.domain.com" Are there any others? And which is best to use for our case? The links are highly-dynamic and change all the time. We want to make sure we don't violate any existing standards and of course we don't want search-engines to tag us as spammers (which we are not, btw). Thanks!

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• Nokogiri parsing Rackspace return using XPath in Rails

  - by Schroedinger

  Hey guys, I'm using Nokogiri to parse a return from the Rackspace API so I'm using their sample code to response = server.get '/customers/'[email protected]_id.to_s+'/domains/', server.xml_format doc = Nokogiri::XML::parse response.body puts "xpath values" doc.xpath("//name").each do |node| puts node.text end As my code to use Nokogiri to return the nodelist of nodes of the element for some reason I seem to have missed something obvious and I just for the life of me cannot get it to parse the list of nodes and return them to me, is there something simple I can do to fix to have it return the list of nodes? Cheers

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• cant use Activerecord find method with associations.

  - by fenec

  here are my models: #game class Game < ActiveRecord::Base #relationships with the teams for a given game belongs_to :team_1,:class_name=>"Team",:foreign_key=>"team_1_id" belongs_to :team_2,:class_name=>"Team",:foreign_key=>"team_2_id" def self.find_games(name) items = Game.find(:all,:include=>[:team_1,:team_2] , :conditions => ["team_1.name = ?", name] ) end end #teams class Team < ActiveRecord::Base #relationships with games has_many :games, :foreign_key =>'team_1' has_many :games, :foreign_key =>'team_2' end When i execute Game.find_games("real") i get : ActiveRecord::StatementInvalid: SQLite3::SQLException: no such column: team_1.name How can i fix the problem i thought that using :include would fix the problem.

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• Multiple robots.txt for subdomains in rails

  - by Christopher

  I have a site with multiple subdomains and I want the named subdomains robots.txt to be different from the www one. I tried to use .htaccess, but the FastCGI doesn't look at it. So, I was trying to set up routes, but it doesn't seem that you can't do a direct rewrite since every routes needs a controller: map.connect '/robots.txt', :controller => ?, :path => '/robots.www.txt', :conditions => { :subdomain => 'www' } map.connect '/robots.txt', :controller => ?, :path => '/robots.club.txt' What would be the best way to approach this problem? (I am using the request_routing plugin for subdomains)

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• require_owner code to limit controller actions not recognizing current user as owner

  - by bgadoci

  I am trying to restrict access to certain actions using a before_filter which seems easy enough. Somehow the ApplicationController is not recognizing that the current_user is the owner of the user edit action. When I take the filter off the controller correctly routes the current_user to their edit view information. Here is the code. Link to call edit action from user controller (views/questions/index.html.erb): <%= link_to "Edit Profile", edit_user_path(:current) %> ApplicationController (I am only posting the code that I think is affecting this but can post the whole thing if needed). class ApplicationController < ActionController::Base def require_owner obj = instance_variable_get("@#{controller_name.singularize.camelize.underscore}") # LineItem becomes @line_item return true if current_user_is_owner?(obj) render_error_message("You must be the #{controller_name.singularize.camelize} owner to access this page", root_url) return false end end and the before_filter class UsersController < ApplicationController before_filter :require_owner, :only => [:edit, :update, :destroy] #... end I simply get the rendering of the error message from the ApplicationController#require_owner action.

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• formtastic weird month name display

  - by Alexey Poimtsev

  Hi, i'm using formtastic, all is ok, but strange thing - on = form.input :birthdate, :as => :date it renders to something like <li><label for="profile_birthdate_2i">Month</label><select id="profile_birthdate_2i" name="profile[birthdate(2i)]"> <option value="1">114</option> <option value="2">97</option> <option value="3">110</option> <option value="4">115</option> <option value="5">108</option> <option value="6">97</option> <option value="7">116</option> <option value="8">105</option> <option value="9">111</option> <option value="10">110</option> <option value="11">32</option> <option value="12">109</option> </select> but if i'm using in semantic_form something like = form.datetime_select :birthdate it renders correctly. I've found information, that it may be caused by locale file with no translations for month names, but its so strange - why rails helpers renders month names ok, but formtastic - not :( any ideas?

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• Multiple inputs on a single line with Twitter Bootstrap and Simple Form 2.0

  - by noel_g

  I am using simple_form 2.0 with twitter bootstrap. I am trying to determine what is the proper wrapper format in order to get something like [city] [State] [Zip] I believe my form needs to be <div class="control-group"> <%= f.input :city,:wrapper => :small, :placeholder => "City", :input_html => { :class=>"span2", :maxlength => 10},:label => false %> <%= f.input :region, :wrapper => :small , :placeholder => "Region", :input_html => { :class=>"span1", :maxlength => 5}, :label => false %> <%= f.input :postal_code, :wrapper => :small, :placeholder => "Postal Code",:input_html => { :class=>"span2", :maxlength => 10},:label => false %> </div> I tried this wrapper config.wrappers :small, :tag => 'div', :class => 'controls inline-inputs', :error_class => 'error' do |b| b.use :placeholder b.use :label_input end I believe I would need to define the CSS as well, but before I go down a rabbit hole I thought I would ask if this is built in somewhere.

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• How can I avoid running ActiveRecord callbacks?

  - by Ethan

  I have some models that have after_save callbacks. Usually that's fine, but in some situations, like when creating development data, I want to save the models without having the callbacks run. Is there a simple way to do that? Something akin to... Person#save( :run_callbacks => false ) or Person#save_without_callbacks I looked in the Rails docs and didn't find anything. However in my experience the Rails docs don't always tell the whole story. UPDATE I found a blog post that explains how you can remove callbacks from a model like this: Foo.after_save.clear I couldn't find where that method is documented but it seems to work.

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• after_create :create a new line in DB

  - by Karl Entwistle

  Hey guys I was wondering if anyone could help me with an issue im having, basically id like to have Account.create after a PayPal notification is received, There is a simple cart model which corresponds to line_items within the cart so add_account_to_market would look like this in pseudo code def add_account_to_market if status == "Completed" find the line items(via cart_id) that correspond to the cart.id that just been paid create an account with user_id set to the current carts user id end end Ive never tried to do something like this in Rails and its not working, Ive been pulling my hair out all night trying to fix this, hopefully someone can help or point me in the right direction. Thanks :) class PaymentNotification < ActiveRecord::Base belongs_to :cart serialize :params after_create :mark_cart_as_purchased after_create :add_account_to_market private def mark_cart_as_purchased if status == "Completed" cart.update_attribute(:purchased_at, Time.now) cart.update_attribute(:paid, true) end end def add_account_to_market if status == "Completed" l = LineItem.find(:all, :conditions => "cart_id = '#{cart.id}'") for l.quantity Account.new(:user_id => cart.user_id) end end end end PS mark_cart_as_purchased method is working fine, its just the add_account_to_market im having issues with.

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