...block where you define replacements (as you already know). This issue applies to both Rails 2 (with rails_xss) as well as Rails 3 applications. Here is a fix to...
...html_safe.gsub(/(f)/) { puts $1; 'b' } f => "boo" Why? This is because of the way rails_xss implements "unsafe" methods: # vendor/plugins/rails_xss/lib/rails_xss/string_ext.rb UNSAFE_STRING_METHODS = [ ..., "gsub",...
for unsafe_method in UNSAFE...
Rails includes milliseconds in Time / DateTime objects when rendering them as JSON: JSON.parse(User.last.to_json)['created_at'] #=> "2001-01-01T00:00:00.000+00:00" In RSpec you might want...
...have to run a separate process. # You'll also benefit from code reloading. if Rails.env.development? require 'sidekiq/testing' Sidekiq::Testing.inline!
...Commit using a story title from Pivotal Tracker geordi con[sole] [TARGET] # Open a Rails console locally or on a Capistrano deploy target geordi cu[cumber] [FILES] # Run Cucumber features...
...PATH # Optimize .png files geordi ra[ke] TASK # Run a rake task in several Rails environments geordi re[move-executable-flags] # Remove executable-flags from files that should not be...
...byebug 11.1.3 (the most recent version at time of writing) when using it with Rails 6 and it's new autoloading component, zeitwerk. There already is a issue for that...
...OVER() AS full_count FROM (/* some complicated subquery */) posts LIMIT 20 OFFSET 100; In Rails with will_paginate you might use it like this: posts = scope_complicated_scope.select('posts.*, COUNT(*) OVER() AS...
...only of a single javascript file, so it does not trigger additional requests with rails it automagically provides user feedback by selecting the text it has copied it provides callbacks...
...modes like copying from a text field or from a data attribute How to (rails) Add clipboard.js to your project through bower or by downloading and adding the javascript file...
Why is it often fine to memoize instance methods? Resources Speeding up Rails with Memoization 4 Simple Memoization Patterns in Ruby (And One Gem)
website_sizer = WebsiteSizer.new website_sizer.size_of('https://makandra.com') # => 27448 website_sizer.size_of('https://railslts.com') # => 2145364 You can use any library to perform the actual HTTP request. The class should...
...class DynamicStylesheetsController < ApplicationController def show logical_path = RELATIVE_PATH_TO_YOUR_TEMPLATE path = File.join(Rails.root, logical_path) template = Sass::Rails::SassTemplate.new(path) environment = YourApp::Application.assets context = environment.context_class.new(environment, logical_path...
...these helper methods to your ApplicationController: class ApplicationController < ActionController::Base private def integration_test? Rails.env.test? && defined?(Cucumber::Rails) end def observable_redirect_to(url) if integration_test? render :text => "If...
The Rails asset pipeline improves delivery of application assets (javascripts, stylesheets, images, fonts). Here are some basic facts about its inner workings. No magic Manifests are the handle on your...
...results. You can do this locally using the following commands: rake assets:precompile # precompiles to Rails.root/public/assets rake assets:clobber # deletes the public/assets directory After precompilation, you can check the...
If your rails application is unable to send mails, it might be useful to debug your settings using the rails console. Here is a snippet that shows the current settings...
...entirely find out why, and we eventually did not care). This happened on a Rails 3.2 application and is likely to happen on Rails 4 applications as well. Your best...
If Rails or Rake are complaining about a missing gem that is listed in your Gemfile.lock and the listed version is properly installed, something is seriously wrong and needs to...
...seeing the gems it needs. Remove those wrong and unneccesary directories and Rake and Rails will boot again. To avoid this in the future, make sure everybody installs gems on...
...migration_user.phone ) end end end Now the best idea is to test this in the rails sandbox (so your development data stay untouched): rails console --sandbox 2.4.1 :003 > DataMigration.new.run
...more unreadable to more attributes you delegate. Alternative to def_delegators When working with Rails, use delegate...
...:to =>...
class Post < ActiveRecord::Base belongs_to :topic delegate :title, :category, :to...
end Looks a lot like the above def_delegators call but behaves differently. Rails does not provide a pretty solution to this, but simply write a method for it...
...Note.all.preload(:attachments).ids.size # => 8 Note I created a bug report for this in the Rails project: https://github.com/rails/rails/issues/46455
Firefox 5.0.1, which we were using for most Rails 2.3 projects, does not run on Ubuntu 14.04 any more. Here is how to update affected projects. Update (or create) .firefox...
...run tests with Geordi, it will tell you how to install it. On a Rails 2 project: Update your Cucumber-related gems as described in Upgrading Cucumber and Capybara, including...
...print, if present requires interactive_editor, if present (basically makes vim available) loads .irbrc_rails if in Rails (e.g. for the Rails console) .irbrc_rails defines efind(email), which is...
...to find users by email requires hirb, if present set the prompt to your Rails app's name Of course you can put anything into these files...
top Also see: How to get a rough picture about a Rails project How to examine an unknown Ruby object
...all styling inline, which means you'll have to do your styling inline. For Rails applications, you can use Roadie or premailer, which lets you keep your well-structured CSS...
...passive maintenance mode, we go with premailer: Include premailer in your Gemfile: gem 'premailer-rails' In your ApplicationMailer define the mailer layout: layout 'mailer' To get the mailer stylesheet (and...
Ubuntu 12.04 LTS x64, Ruby 1.8.7, Rails 2.13, PDFKit 0.5.4, Phusion Passenger Apache 2 I ran into this, when I started using passenger to deal with the Single Thread Issue...
...wkhtmltopdf-amd64 /usr/local/bin/wkhtmltopdf sudo chmod +x /usr/local/bin/wkhtmltopdf Tell PDFKit where to find your wkhtmltopdf: Rails::Initializer.run do |config| require "pdfkit" config.middleware.use PDFKit::Middleware PDFKit.configure do |config| config.wkhtmltopdf = '/usr/local/bin/wkhtmltopdf' # <-- the fix...
...all styling inline, which means you'll have to do your styling inline. For Rails applications, you can use Roadie or premailer, which lets you keep your well-structured CSS...
...litmus during rendering. For a preview during develoment, you can also use your local Rails mailer previews. Take the preview HTML source and paste it to Litmus. When the builder...
...following helper. def greeting message = ''.html_safe message << 'Welcome to ' message << content_tag(:span, Rails.env, class: 'greeting--location') content_tag :div, message, class: 'greeting' end That looks clumsy and is...
...say something like this? def greeting render_haml <<-HAML .greeting Welcome to %span.greeting--location = Rails.env HAML end It would be, and you can have it, too. You simply need to...