...installing Bundler 1.1 you will get the following warning when running tests: WARNING: Cucumber-rails required outside of env.rb. The rest of loading is being defered until env.rb is called...
...To avoid this warning, move 'gem cucumber-rails' under only group :test in your Gemfile The warning is misleading because it has nothing to do with moving cucumber-rails into...
In Rails 7.1 it has become possible to annotate partials with the locals they expect: # partial _user_name.erb <%# locals: (user:) %> <%= user.name %> # view <%= render 'user_name' %> <%# this raises an ArgumentError %> Unfortunately, when...
...temporarily remove the annotation to see the correct error. Niklas opened an issue in rails, a fix is merged and will arrive in Rails >7.2.2.2 and...
Rails' params hash contains any request parameters (URL parameters or request payload) as well as routing parameters like :controller, :action, or :id. To access only URL parameters, use request.query_parameters...
Have you ever mistaken one Rails environment for another? The attached helper will help you to never do it again. Save the attached file to app/helpers/ and use the widget...
...in your layout like this: %body = rails_env_widget unless Rails.env.production? It'll render a small light gray box in the top left corner of your screen, containing the current...
...port and the username (default root) and password (default msandbox). When working on a Rails project, you need to paste all of that into your config/database.yml. Connecting to a sandbox...
Please don't use the horrible datetime_select helper. It has a terrible UI. Always prefer to use a visual...
Using uncountable resources is not recommended as it breaks Rails' magic, e.g. when using form_for. You'll always be better off using simple pluralizable resources. Rails automatically creates path...
...will refer to the show action: /sheep/:id. Solution As the linked article states, Rails creates a special _index_path for this scenario. Thus, you can simply call:
dusen 0.4.8 and edge_rider 0.2.3 no longer depend on Rails (they still depend on ActiveRecord). That means you can use them e.g. with Sinatra...
If you are using Angular and want something like Rails' simple_format which HTML-formats a plain-text input into paragraphs and line breaks, this directive is for you.
There are a few ways to access view helpers from the Rails console. The easiest way is the helper shortcut: helper.translate 'i18n.string' helper.your_helper_method If the desired helper renders...
...a view template, you need this setup: view_paths = Rails::Application::Configuration.new(Rails.root).paths["app/views"] av_helper = ActionView::Base.new(view_paths).extend YourHelperModule av_helper.your_helper_method
Starting from 4.1, Rails automatically detects the inverse of an association, based on heuristics. Unfortunately, it does not seem to notify you when it fails to infer the :inverse_of...
If you need to log to a file you can use Ruby's Logger class: require 'logger'
...only want to compile when needed. This card shows what will cause Webpacker (the Rails/Webpack integration) to compile your assets. When you run a dev server While development it is...
...call any helper that accesses asset paths (e.g. javascript_pack_tag or image_tag), Rails will compile your entire assets within its process before that helper returns. This will cause...
Rails 5 will introduce ActiveRecord::Relation#or. On Rails 4 and 3.2 you can use the activerecord_any_of gem which seems to be free of ugly hacks and nicely...
After starting the Rails server in a freshly generated Rails 3.1 project you could see an error message such as /usr/lib/ruby/gems/1.8/gems/execjs-1.3.0/lib/execjs/runtimes.rb:50:in `autodetect': Could not find a JavaScript runtime...
The Ruby on Rails security list archive can be found here: http://groups.google.com/group/rubyonrails-security You can subscribe to this mailing list without a Google account by pasting this URL into...
Rails 4 introduced raising an error on pending migrations. This is most annoying when you are crafting a migration but need to play with your application to figure out how...
...RVM on a Mac and cannot enter 8+ bit characters on an IRB or Rails console, you are missing the readline package. You will need to re-install your Ruby...
User.active.to_sql Rails 2 Use either the Edge Rider or fake_arel gem to get #to_sql backported to Rails 2. If you don't want to use...
...a gem for this, you can do this with vanilla Rails 2: User.active.construct_finder_sql...
This card needs to be updated for Rails 3+. Since there is no --debugger flag you need to run: rdebug script/runner lib/scripts/something.rb That will open an debugging IRB right away...
Install libreadline: sudo apt-get install libreadline-dev Reinstall the ruby and tell rvm where to find readline
Put the following into config.ru in your Rails root folder: # Require your environment file to bootstrap Rails require ::File.dirname(__FILE__) + '/config/environment' # Dispatch the request run ActionController::Dispatcher.new Otherwise, your Rails...
...decide to open a file directly instead of having to save it first. For Rails >= 3.2 Simply put your mime types in config/initializers/mime_types.rb. send_file will take care of everything...
For Rails < 3.2 Put your mime types in config/initializers/mime_types.rb. Additionally, tell send_file to use them (for example like this): file = @attachment.file.path file_extension = File.extname(file)[1..-1]
See our new comprehensive guide to upgrading every Rails 2 version ever...