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• Bluehost internal server error

  - by Aditya

  Hello everyone, When i am creating the setup of my rails application on bluehost,it throw following error:- Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, [email protected] and inform them of the time the error occurred, and anything you might have done that may have caused the error. More information about this error may be available in the server error log. Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request. Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l DAV/2 mod_auth_passthrough/2.1 FrontPage/5.0.2.2635 Server at team.cipher-tech.com Port 80 Please help me.It's urgent. Thanks in advance..

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• Convert array of hashes to array of structs?

  - by keruilin

  Let's say I have two objects: User and Race. User has two attributes: first_name, last_name. And Race has three attributes: course, start_time, end_time. Now let's say I create an array of hashes like this: user_races = races.map{ |race| {:user = race.user, :race = race} } How do I then convert user_races into an array of structs, keeping in mind that I want to be able to access the attributes of both user and race from the struct element?

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• What does this rake db:seed error mean?

  - by Kenji Kina

  I've been trying to solve this problem for a couple of hours but I can't seem to understand what's going on. I'm using Rails 3 beta, and want to seed some data to the database. However, when I try to seed some values through db:seed, I get this error: rake aborted! Attribute(#81402440) expected, got Array(#69024170) The seeds.rb is: DataType.delete_all DataType.create( :name => 'String' ) And I got these classes: class DataType < ActiveRecord::Base has_many :attributes end class Attribute < ActiveRecord::Base belongs_to :data_types end While the migration definition for DataType is merely: class CreateDataTypes < ActiveRecord::Migration def self.up create_table :data_types do |t| t.string :name t.timestamps end end def self.down drop_table :data_types end end Can anyone tell me what I'm doing wrong?

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• Rails prettyPhoto does not show photo with jquery (instead redirect to photo page)

  - by dare

  i do all instruction for use prettyPhoto in https://github.com/hiq5/prettyphoto-rails. and i do this to show a single photo( not gallery ) =link_to image_tag(photo.photo_url(:thumb).to_s, :alt => photo.name ,:class => "img-polaroid"), photo.photo_url, :rel => 'prettyPhoto' but still redirect to photo url and show photo, and doesn't use jQuery to show it on the current page. i check it with chrome development tools, there isn't any error. i use haml to generate views (instead erb), and carrierwave to upload photos. by the way I use twitter bootstrap. any help is appreciated.

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• Rails fields_for :child_index option explanation

  - by Timothy

  I have been trying to create a complex form with many nested models, and make it dynamic. Now I found that making a nested model isn't difficult with accepts_nested_attributes_for, but making it nested and dynamic was seemingly impossible if there were multiple nested models. I came across http://github.com/ryanb/complex-form-examples/blob/master/app/helpers/application_helper.rb which does it very elegantly. Could anyone shed some light on lines 13 and 16? 13 form_builder.object.class.reflect_on_association(method).klass.new and 16 form_builder.fields_for(method, options[:object], :child_index => "new_#{method}") do |f| From intuition, line 13 instantiates a new object, but why must it do so many method calls? I couldn't find any documentation for the :child_index option on line 16. When the form is created, a very large number is used as an index for new models, whereas existing models are indexed by their id. How does this work?

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• Rails XML Builder - Code refactoring

  - by Vijay Dev

  I have written the following code in my Rails app to generate XML. I am using Aptana IDE to do Rails development and the IDE shows a warning that the code structure is identical in both the blocks. What changes can be done to the code to remove the duplicity in structure? Is there any other way to write the same? xml.roles do @rolesList.each do |r| xml.role(:id => r["role_id"], :name => r["role_name"]) end end xml.levels do @levelsList.each do |lvl| xml.level(:id => lvl["level_id"], :name => lvl["level_name"]) end end

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• Retrieving specific fixtures in Rails

  - by Bilal Aslam

  I have a YML file containing fixtures for a Rails model (Comment) which looks like this (pardon the formatting): comment_a: id: 1 text: 'foo' visible: false comment_b: id: 2 text: 'bar' visible: true comment_c: id: 3 text: 'baz' visible: true I know that I can select an individual Comment fixture like so: comments(:comment_a) In one of my acceptance tests, I want to find all the Comments which have visible = true. How do I select a set of Comments that meet certain criteria so I can iterate over them afterwards?

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• Next, Previous Records Using Named Scope

  - by keruilin

  I have a model for which I want to retrieve the next record(s) and previous record(s). I want to do this via a named_scope on the model, and also pass in as an argument the X number of next/previous records to return. For example, let's say I have 5 records: Record1 Record2 Record3 Record4 Record5 I want to be able to call Model.previous or Model.previous(1) to return Record2. Similarly, I want to be able to call Model.next or Model.next(1) to return Record4. As another example I want to be able to call Model.previous(2) to return Record3. I think you get the idea. How can I accomplish this?

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• Does Shoes have a list view control?

  - by Jim

  I was taking a look at Shoes which seems like a very nice tool for quick GUI applications. The common elements/controls, however, don't seem to include the equivalent of a list/report view (e.g., ListView in Windows, NSTableView in OS X). Did I just miss this, or does it not (yet) exist?

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• What is a good .gitignore to use with Rails on Heroku?

  - by Victor P

  What is a good .gitignore to use with Rails on Heroku? *.log *.sqlite3 what else?

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• What is best strategy to handle exceptions & errors in Rails?

  - by Nick Gorbikoff

  Hello. I was wondering if people would share their best practices / strategies on handling exceptions & errors. Now I'm not asking when to throw an exception ( it has been throroughly answered here: SO: When to throw and Exception) . And I'm not using this for my application flow - but there are legitimate exceptions that happen all the time. For example the most popular one would be ActiveRecordNotFound. What would be the best way to handle it? The DRY way? Right now I'm doing a lot of checking within my controller so if Post.find(5) returns Nil - I check for that and throw a flash message. However while this is very granular - it's a bit cumbersome in a sense that I need to check for exceptions like that in every controller, while most of them are essentially the same and have to do with record not found or related records not found - such as either Post.find(5) not found or if you are trying to display comments related to post that doesn't exist, that would throw an exception (something like Post.find(5).comments[0].created_at) I know you can do something like this in ApplicationController and overwrite it later in a particular controller/method to get more granular support, however would that be a proper way to do it? class ApplicationController < ActionController::Base rescue_from ActiveRecord::RecordInvalid do |exception| render :action => (exception.record.new_record? ? :new : :edit) end end

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• How to generate table of contents with prawn?

  - by flagman

  Is there an easy way to generate table of contents with links to corresponding pages?

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• Rails link to PDF version of show.html.erb

  - by Danny McClelland

  Hi Everyone, I have created a pdf version of our rails application using the Prawn plugin, the page in question is part of the Kase model - the link to the kase is /kases/1 and the link to the pdf version is /kases/1.pdf. How can I add a link within the show.html.erb to the PDF file so whichever page is being viewed it updates the URL to the correct case id? <% content_for :header do -%> <%=h @kase.jobno %> | <%=h @kase.casesubject %> <% end -%> <!-- #START SIDEBAR --> <% content_for :sidebar do -%> <% if @kase.avatar.exists? then %> <%= image_tag @kase.avatar.url %> <% else %> <p style="font-size:smaller"> You can upload an icon for this case that will display here. Usually this would be for the year number icon for easy recognition.</p> <% end %> <% end %> <!-- #END SIDEBAR --> <ul id="kases_showlist"> <li>Date Instructed: <span><%=h @kase.dateinstructed %></span></li> <li>Client Company: <span><%=h @kase.clientcompanyname %></span></li> <li>Client Reference: <span><%=h @kase.clientref %></span></li> <li>Case Subject: <span><%=h @kase.casesubject %></span></li> <li>Transport<span><%=h @kase.transport %></span></li> <li>Goods<span><%=h @kase.goods %></span></li> <li>Case Status: <span><%=h @kase.kase_status %></span></li> <li>Client Company Address: <span class="address"><%=h @kase.clientcompanyaddress %></span></li> <li>Client Company Fax: <span><%=h @kase.clientcompanyfax %></span></li> <li>Case Handler: <span><%=h @kase.casehandlername %></span></li> <li>Case Handler Tel: <span><%=h @kase.casehandlertel %></span></li> <li>Case Handler Email: <span><%=h @kase.casehandleremail %></span></li> <li>Claimant Name: <span><%=h @kase.claimantname %></span></li> <li>Claimant Address: <span class="address"><%=h @kase.claimantaddress %></span></li> <li>Claimant Contact: <span><%=h @kase.claimantcontact %></span></li> <li>Claimant Tel: <span><%=h @kase.claimanttel %></span></li> <li>Claiment Mob: <span><%=h @kase.claimantmob %></span></li> <li>Claiment Email: <span><%=h @kase.claimantemail %></span></li> <li>Claimant URL: <span><%=h @kase.claimanturl %></span></li> <li>Comments: <span><%=h @kase.comments %></span></li> </ul> <!--- START FINANCE INFORMATION --> <div id="kase_finances"> <div class="js_option"> <h2>Financial Options</h2><p class="finance_showhide"><%= link_to_function "Show","Element.show('finance_showhide');" %> / <%= link_to_function "Hide","Element.hide('finance_showhide');" %></p> </div> <div id="finance_showhide" style="display:none"> <ul id="kases_new_finance"> <li>Invoice Number<span><%=h @kase.invoicenumber %></span></li> <li>Net Amount<span><%=h @kase.netamount %></span></li> <li>VAT<span><%=h @kase.vat %></span></li> <li>Gross Amount<span><%=h @kase.grossamount %></span></li> <li>Date Closed<span><%=h @kase.dateclosed %></span></li> <li>Date Paid<span><%=h @kase.datepaid %></span></li> </ul></div> </div> <!--- END FINANCE INFORMATION --> <%= link_to 'Edit Case', edit_kase_path(@kase) %> | <%= link_to 'Back', kases_path %> | <a href="#">Top</a> <div style="width:120%; height: 50px; background-color: black; margin: 10px 0 0 -19px; padding: 0; background-color: #d4d4d4;">&nbsp;</div> <div class="js_option_kaseemails"> <%= link_to_function "Show", "Element.show('newinstructionemail1');" %> / <%= link_to_function "Hide", "Element.hide('newinstructionemail1');" %> </div> <h3>New Instruction Email</h3> <div id="newinstructionemail1" style="display:none"> <p class="kase_email_output"> Hi,<br /> <br /> Many thanks for your instructions in the subject matter.<br /> <br /> We have allocated reference number <%=h @kase.jobno %> to the above claim.<br /> <br /> We have started our inquiries and will be in touch.<br /> <br /> Best Regards,<br /> <br /> <strong><%=h current_user.name %></strong> <br /> McClelland &amp; Co<br /> PO Box 149<br /> Southport<br /> PR8 4GZ<br /> <br /> Tel: +(0) 1704 569871<br /> Fax: +(0) 1704 562234<br /> Mob: <%=h current_user.mobile %><br /> E-mail: <%= current_user.email %><br /> <br /> This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you receive this e-mail in error please notify the originator of the message. <br /><br /> McClelland &amp; Co has taken every reasonable precaution to ensure that any attachment to this e-mail has been checked for viruses but it is strongly recommended that you carry out your own virus check before opening any attachment. McClelland &amp; Co cannot accept liability for any damage sustained as a result of software virus infection. </p> <%= link_to 'Edit Case', edit_kase_path(@kase) %> | <%= link_to 'Back', kases_path %> | <a href="#">Top</a> </div> <div style="width:120%; height: 20px; background-color: black; margin: 10px 0 0 -19px; padding: 0; background-color: #d4d4d4;">&nbsp;</div> <div class="js_option_kaseemails"> <%= link_to_function "Show", "Element.show('newinstructionemail');" %> / <%= link_to_function "Hide", "Element.hide('newinstructionemail');" %> </div> <h3>New Instruction Email</h3> <div id="newinstructionemail" style="display:none"> <p class="kase_email_output"> Hi,<br /> <br /> Many thanks for your instructions in the subject matter.<br /> <br /> We have allocated reference number <%=h @kase.jobno %> to the above claim.<br /> <br /> We have started our inquiries and will be in touch.<br /> <br /> Best Regards,<br /> <br /> <strong><%=h current_user.name %></strong> <br /> McClelland &amp; Co<br /> PO Box 149<br /> Southport<br /> PR8 4GZ<br /> <br /> Tel: +(0) 1704 569871<br /> Fax: +(0) 1704 562234<br /> Mob: <%=h current_user.mobile %><br /> E-mail: <%= current_user.email %><br /> <br /> This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you receive this e-mail in error please notify the originator of the message. <br /><br /> McClelland &amp; Co has taken every reasonable precaution to ensure that any attachment to this e-mail has been checked for viruses but it is strongly recommended that you carry out your own virus check before opening any attachment. McClelland &amp; Co cannot accept liability for any damage sustained as a result of software virus infection. </p> <%= link_to 'Edit Case', edit_kase_path(@kase) %> | <%= link_to 'Back', kases_path %> | <a href="#">Top</a> </div> <div style="width:120%; height: 20px; background-color: black; margin: 10px 0 0 -19px; padding: 0; background-color: #d4d4d4;">&nbsp;</div> <div class="js_option_kaseemails"> <%= link_to_function "Show", "Element.show('newinstructionemail2');" %> / <%= link_to_function "Hide", "Element.hide('newinstructionemail2');" %> </div> <h3>New Instruction Email</h3> <div id="newinstructionemail2" style="display:none;"> <p class="kase_email_output"> Hi,<br /> <br /> Many thanks for your instructions in the subject matter.<br /> <br /> We have allocated reference number <%=h @kase.jobno %> to the above claim.<br /> <br /> We have started our inquiries and will be in touch.<br /> <br /> Best Regards,<br /> <br /> <strong><%=h current_user.name %></strong> <br /> McClelland &amp; Co<br /> PO Box 149<br /> Southport<br /> PR8 4GZ<br /> <br /> Tel: +(0) 1704 569871<br /> Fax: +(0) 1704 562234<br /> Mob: <%=h current_user.mobile %><br /> E-mail: <%= current_user.email %><br /> <br /> This e-mail and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you receive this e-mail in error please notify the originator of the message. <br /><br /> McClelland &amp; Co has taken every reasonable precaution to ensure that any attachment to this e-mail has been checked for viruses but it is strongly recommended that you carry out your own virus check before opening any attachment. McClelland &amp; Co cannot accept liability for any damage sustained as a result of software virus infection. </p> <%= link_to 'Edit Case', edit_kase_path(@kase) %> | <%= link_to 'Back', kases_path %> | <a href="#">Top</a> </div> Thanks, Danny

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• rails i18n shared keys

  - by SMiX

  Hello. How can I define shared keys in my config/locales/lang.yml ? For example I want to use f.label :date and to see translated word "date" in all forms for all models.

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• Twitter Oauth GMT / BST problem

  - by Andrei Serdeliuc

  I keep getting 401 when trying to login via Oauth with Twitter. I'm using twitter_oauth-0.3.3 with oauth-0.3.6 in rails It used to work perfectly some time ago, so after some digging, I realised it might have something to do with my timezone. In the headers of the Twitter response, one of them is: date: - Sun, 11 Apr 2010 16:53:34 GMT Even though the time is actually 17:53:34 BST I'm assuming the request is signed using BST time, and so it fails. Anyone had this problem / found a fix for it?

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• Web site aggregation with twitter widget SSL issue

  - by AB

  Hello! I'm seeking for solution how to isolate widget included by partial to main site. Issue appear when user access site with https. Ie 6,7 shows security confirmation dialog (part of website resources are not in secure zone). First of all I download twitter widget on our side, also I download all CSS and pictures. Then I patched widget JS to point onto downloaded resources. But still has not luck with security warning :( I guess the reason of this issue is AJAX request to twitter, but there is no idea how to sole it. (Just to create some kind of proxy on our side). Thank you for attention.

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• Rails Delayed Job & Library Class

  - by Lee

  Hey we have a library class (lib/Mixpanel) that calls delayed job as follows: class Mixpanel attr_accessor :options attr_accessor :event def track!() .. dj = send_later :access_api # also tried with self.send_later .. end def access_api .. end The problem is that when we run rake jobs:work: we get the following error: undefined method `access_api' for # Any idea why?

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• Good code highlighting, syntax analysis and code assist editor on js.erb and css.erb files

  - by Pickachu

  I want to know if there is a good compatible api that supports erb and javascript highlighting. I've already tried Eclipse with Aptana RadRails. Perhaps I'm configuring something wrong, but it guesses that I'm using html.erb on both css.erb and js.erb files. I've tried too the Emacs with js2-mode, nXhtml and Rinari modes. Again, it works fine for html.erb, but it detects the css.erb and js.erb as html.erb files. Maybe it's possible to configure it to accept that files and be compatible.

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• jQuery RJS inserting string vs dom.

  - by Dmitriy Likhten

  So I am trying to use jQuery to insert data from an ajax call. I actually use the jquery.form plugin, and have the ajax form submitted with a dataType: 'script'. The response is a jquery expression which contains a <%= javascript_escape(render ...) %> erb tag (similar to what the railscasts episode 136 instructs to do). However the end result is that the full text of the render is inserted as if that was the content to be inserted into the page, as text, not as dom elements. Could the fact that the render had some newlines at the beginning be the cause? Dom text: "\n \n &lt;li>....&lt;/li>" I also tried having jQuery just read the response as a script and execute it, and used the prototype-based rjs stuff, same effect, the text is inserted into the dom. Are there any reasons why such a behavior would be experienced? A bit of clarification: My response.js.erb is jQuery("#content").append("<%= escape_javascript(render(:partial => "widgets")) %>"); jQuery("#information").text("Finally, something happened!"); The full text inside the append() call is inserted as text into #content.

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• How to solve rake tasks deprecation on the rails plugin?

  - by Dida

  Because of the concept introduced in here, Rails::Plugin is nothing more than a Rails::Engine, but since it's loaded too late in the boot process, it does not have the same configuration powers as a bare Rails::Engine. Opposite to Rails::Railtie and Rails::Engine, you are not supposed to inherit from Rails::Plugin. Rails::Plugin is automatically configured to be an engine by simply placing inside vendor/plugins. Since this is done automatically, you actually cannot declare a Rails::Engine inside your Plugin, otherwise it would cause the same files to be loaded twice. This means that if you want to ship an Engine as gem it cannot be used as plugin and vice-versa. Besides this conceptual difference, the only difference between Rails::Engine and Rails::Plugin is that plugins automatically load the file "init.rb" at the plugin root during the boot process. rake tasks in the rails plugins are deprecated and it is advised to use lib/tasks instead. How to solve this? Can I just simply move the plugin's tasks to the lib/tasks?

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• Rails authentication plugin recommendation

  - by Tam

  Hello, I would like to add authentication to my Rails app. I came across few plugins that do this: acts_as_authenticated, restful_authentication, Authlogic...etc I haven't seen an article that describes differences, advantages and disadvantages of using each. Can you help with that? which one do you use and why? Thanks, Tam

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• Rails Controller Tests for Captcha using Shoulda, Factory Girl, Mocha

  - by Siva

  Can someone provide a strategy/code samples/pointers to test Captcha validations + Authlogic using Shoulda, Factory Girl and Mocha? For instance, my UsersController is something like: class UsersController < ApplicationController validates_captcha ... def create ... if captcha_validated? # code to deal with user attributes end ... end In this case, how do you mock/stub using Shoulda / Factory Girl / Mocha to test valid and invalid responses to the Captcha image? Appreciate your help, Siva

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• undefined method `user_sessions_path' for #<ActionView::Base:0xdb3158>

  - by mrbernz

  I'm getting this error that's driving me up the wall. I don't see what's going on... I've followed instructions to the T and it's still complaining - help please!! I've got extracts of the error message, controller file, login page and routes file. Error message NoMethodError in User_sessions#new Showing app/views/user_sessions/new.html.erb where line #4 raised: undefined method `user_sessions_path' for # Extracted source (around line #4): 1: 2: User Login 3: 4: <% form_for @user_session do |f| % 5: <%= f.error_messages % 6: 7: controller/user_sessions_controller.rb class UserSessionsController < ApplicationController before_filter :require_no_user, :only = [:new, :create] before_filter :require_user, :only = :destroy def new @user_session = UserSession.new end def create @user_session = UserSession.new(params[:user_session]) if @user_session.save flash[:notice] = "Login successful!" redirect_to root_url #redirect_back_or_default account_url else render :action = :new end end def destroy current_user_session.destroy flash[:notice] = "Logout successful!" redirect_to root_url #redirect_back_or_default account_url end end user_sessions/new.html.erb User Login <% form_for @user_session do |f| % <%= f.error_messages % <%= f.label :Email % <%= f.text_field :email % <%= f.label :Password % <%= f.password_field :password % <%= f.submit "Submit" % <% end % routes.rb file ActionController::Routing::Routes.draw do |map| map.login "login", :controller = "user_sessions", :action = "new" Am I look in in the wrong place??

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• Running RSpec on Google App Engine via JRuby

  - by Carl

  I'm trying to write some tests (RSpec) against the AppEngine and its datastore. I've tried to load the environment and tests via: appcfg.rb run -S spec app/tests/ And I end up with the following error: spec:19: undefined method `bin_path' for Gem:Module (NoMethodError) I can run non-appengine specs just fine by running: spec app/tests/ Any suggestions on how to get RSpec up and running with JRuby and Google App Engine would be greatly appreciated. Thank you.

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• Sinatra Variable Scope

  - by Ethan Turkeltaub

  Take the following code: ### Dependencies require 'rubygems' require 'sinatra' require 'datamapper' ### Configuration config = YAML::load(File.read('config.yml')) name = config['config']['name'] description = config['config']['description'] username = config['config']['username'] password = config['config']['password'] theme = config['config']['theme'] set :public, 'views/themes/#{theme}/static' ### Models DataMapper.setup(:default, "sqlite3://#{Dir.pwd}/marvin.db") class Post include DataMapper::Resource property :id, Serial property :name, String property :body, Text property :created_at, DateTime property :slug, String end class Page include DataMapper::Resource property :id, Serial property :name, String property :body, Text property :slug, String end DataMapper.auto_migrate! ### Controllers get '/' do @posts = Post.get(:order => [ :id_desc ]) haml :"themes/#{theme}/index" end get '/:year/:month/:day/:slug' do year = params[:year] month = params[:month] day = params[:day] slug = params[:slug] haml :"themes/#{theme}/post.haml" end get '/:slug' do haml :"themes/#{theme}/page.haml" end get '/admin' do haml :"admin/index.haml" end I want to make name, and all those variables available to the entire script, as well as the views. I tried making them global variables, but no dice.

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