...animated GIFs. Resizing them can be a time-consuming task and will block a Rails worker until the image is processed. Save yourself that trouble, and simply tell ImageMagick to...
where html_content can be replaced by one of the following commands: Rails body or response.body Capybara: page.driver.html.content page.body Webrat: Nokogiri::HTML(response.body).content The returned strings can...
...need to configure this if you're using system tests with modern versions of Rails. They do exactly the same
...our older projects, we use the mysql2 gem. Unfortunately, versions 0.2.x (required for Rails 2.3) and versions 0.3.x (required for Rails 3.2) can no longer be installed on...
...to errors when compiling the native extension, or a segfaults when using it. For Rails 4.2, mysql2 version 0.4.10 seems to work okay. If you still have issues, upgrade to...
Watch Solving bizarre authorization requirements with Rails Read the Consul README Read the assignable_values README Understand how Consul and assignable_values can be used to implement arbitrary authorization...
Here is how to start your Rails application to accept both HTTP and HTTPS in development. gem install passenger Create a self-signed SSL certificate. Store the generated files in...
...INFO -- : [53a240c1-489e-4936-bbeb-d6f77284cf38] more Goal When searching through Rails logs on production, it's often hard to see all lines that belong to the same requests, since...
...So might fix this by adding the following lines to your application.rb: class Application < Rails::Application config.time_zone = 'Berlin' # or whatever your time zone end It seems Date.yesterday uses the...
...method's source code If your Gemfile comes with method_source (a dependency of Rails 7+), you can can inspect the source code directly using the Method#source method:
...pass your string or stream directly. >> Attachment.create!(file: FileIO.new(contents, 'document.pdf')) => # When using zeitwerk (Rails 6) you might also need to add an inflection in order to make autoloading work...
...for example, you maintain a gem and want to run automated tests against multiple rails versions. When you need to bundle one of your secondary Gemfiles, the solution above is...
...preprocessed: true end end Preprocess this version for all existing records bundle exec rails runner 'User.find_each { |user| user.avatar.variant(:preview).processed }' Use the new variant and deploy
Large Rails projects tend to define multiple custom ways to format Dates or DateTimes. This often leads to duplicated format strings, wrong formats and unnecessary introduction of new formats.
...an instance of its subclasses or superclass. This is useful because some parts of Rails reflect on the class of an instance, e.g. to decide which partial to render:
...et dolore magna aliqua. Mi eget mauris pharetra et ultrices neque." output_mp3_path = Rails.root.join("tts/ipsum.mp3") new Synthesizer(input_text, output_mp3_path).to_mp3 Code require "ruby-openai"
...saved to database directly as the the dumped object was not marked dirty, thus rails does not see the need to save it, even if the object is not present...
...add the following tests to test suites: # Make sure to require the previews Dir[Rails.root.join('spec/mailers/previews/*.rb')].each { |file| require(file) } ActionMailer::Preview.all.index_with(&:emails).each do |preview, mails|
...config.gem 'chunky_png', :version => '=0.8.0' create config/initializers/compass.rb (or copy from development repo): ^ require 'compass' rails_root = (defined?(Rails) ? Rails.root : RAILS_ROOT).to_s Compass.add_project_configuration(File.join(rails_root, "config...
^ This configuration file works with both the Compass command line tool and within Rails. Require any additional compass plugins here. project_type = :rails project_path = Compass::AppIntegration::Rails.root
When you are using PgBouncer with e.g. a Ruby on Rails application which uses different application_names for the PostgreSQL connection (for Puma, Sidekiq, Cronjobs, ...) PgBouncer will set the application...
If you require your Rails models manually, pay attention to the path you use. Unless you have to, don't do it at all. Background Consider these...
class Foo # something happens here end Now, when your environment is booted, Rails will automatically load your models, like User. In our example, when Foo gets loaded, it...
...for session hashes. Use update instead. Outline Let's assume you're modifying the Rails session. For simplicity, let's also assume your session is empty when you start (same...
...is the ActionController::Session::AbstractStore::SessionHash class (session is of that type in your Rails application, but also in Rack middleware): class SessionHash < Hash # ... def update(hash) load_for_write...
...use SimpleForm in your project, I would suggest to regenerate the configuration file with rails generate simple_form:install --bootstrap and merge it with your own customizations instead of only...
...partial_double_verification. This might be handy in case you are testing helpers in Rails, where you sometimes rely on methods defined in the application controller (e.g. current_user and...
Webpack is the future. We're using it in our latest Rails applications. For tests, we want to compile assets like for production. For parallel tests, we want to avoid...
...Dir.empty?(public_output_path) end delegate :public_output_path, to: :config private def test? Rails.env.test? end def parallel_tests? test? && !!parallel_tests_number end def parallel_tests_number