Selenium does not speak SSL because it uses WEBrick that doesn't. When you use Selenium for Cucumber scenarios that visit pages with SSL, they will fail.

To turn off SSL only for scenarios that are executed on WEBrick, put this method into your application controller.

def ensure_proper_protocol
  request.headers['SERVER_SOFTWARE'].andand.include?('WEBrick') || super
end

Rails guide that covers PostgreSQL-specific column types and usages for Active Record.

You should especially keep in mind the special datatypes that PostgreSQL offers. \
Types like json and array take away a lot of the pain that you had on MySQL projects.

Example use cases for array are tags or storing foreign keys (instead of a join model). You can even index them.

If you have a FooController and also have a layout app/views/layouts/foo.html, Rails will use this without being told so.

This is super convenient except never.

Batman is an alternative Javascript MVC with a similar flavor as AngularJS, but a lot less features and geared towards Ruby on Rails.

The attached link leads to a tutorial for a small blog written with Rails / Batman.js.

I'm collecting other Batman.js resources in my bookmarks.

We can now plug into every facet of the Rails jQuery UJS adapter, binding to custom events, and even customizing internal functions, without hacking or monkey-patching the rails.js file itself.

Thanks to habits engrained by Rails 2’s link_to_remote and remote_form_for, we expect that Rails 3 would also handle the AJAX response for our remote links and forms. But it doesn’t; it leaves that for you.

In a great post about named routes in Rails, path vs. url, Viget Labs ponders which variant is best used.<br />
<br />
Most often we use foo_path, which when used in Rails URL helpers will generate a relative path, where foo_url generates a full URL. In most cases the path makes most sense, but not always.

The Rails router has been written and rewritten at least four times2, including a recent rewrite for the upcoming Rails 3. The syntax is now more concise.<br />
<br />
But never mind making it shorter! It’s time for a final rewrite: Let’s get rid of it altogether!

Recently I've been made aware of people inside US Government organizations using my Ruby on Rails Security presentation as an excuse to limit Ruby on Rails adoption and projects inside those organizations.

When you encouter an unsafe string that you actually made html_safe before, perhaps you called one of the following methods on it:

"capitalize", "chomp", "chop", "delete", "downcase", "gsub", "lstrip", "next", "reverse", "rstrip", "slice", "squeeze", "strip", "sub", "succ", "swapcase", "tr", "tr_s", "upcase"

All these methods are possibly unsafe, so they will return an unsafe String even if called on a SafeBuffer. If used for in-place replacements (e.g. sub! instead of sub), a TypeError is raised.

This is to prevent tric...

Learning Rails for the first time should be fun, and Rails for Zombies allows you to get your feet wet without having to worry about configuration. You'll watch five videos, each followed by exercises where you'll be programming Rails in your browser.

The following code activates autoloading using ActiveSupport 3.x:

require 'active_support'
require 'active_support/dependencies'
relative_load_paths = %w[app/controllers app/models]
ActiveSupport::Dependencies.autoload_paths += relative_load_paths

Phillip Koebbe from Ruby on Rails suggested inserting following code between the "bootstrap" and "initialize" sections of enviroment.rb. This hack fixes the problem.

if Gem::VERSION >= "1.3.6"
  module Rails
    class GemDependency
      def requirement
        r = super
        (r == Gem::Requirement.default) ? nil : r
      end
    end
  end
end

When your Rails controller calls render, you can pass a :status option for the HTTP status code:

render 'results', status: 400

All important status codes also have a symbol alias, which makes your code easier to read:

render 'results', status: :bad_request

Attached is a list of available symbol values for :status.

If you get an error message like that you are missing the Aspell files a specific language:

No word lists can be found for the language "de"

Solve it by installing the proper package, e.g. on Ubuntu:

sudo apt-get install aspell-de

sudo gem install rails --version="=1.2.3"
rails _1.2.3_ new-project-folder

When running migrations with rake db:migrate, there's the STEP and VERSION parameters that you can pass to nearly all commands.

# Migrate
rake db:migrate
rake db:migrate STEP=2
rake db:migrate VERSION=20080906120000

# Redo
rake db:migrate:redo
rake db:migrate:redo STEP=2
rake db:migrate:redo VERSION=20080906120000

# Rollback (starting from latest migration)
rake db:rollback
rake db:rollback STEP=2

# Run the `down` migration path of a certain migration file
rake db:migrate:down VERSION=20080906120000

When you put a Rake task into lib/tasks, but running it fails with...

Don't know how to build task name:of:task

... does your Rake task's filename end in .rb? It needs to end in .rake instead.

If you’re testing the behavior of deprecated code in your Ruby project, the warning messages littered throughout your spec output is incredibly noisy.

You could silence all warnings with ::ActiveSupport::Deprecation.silenced = true, but you might miss out on an important warning in one of your dependencies. It’s tempting to remove the tests altogether (the code will be burned soon too, right?), but I figured out something a little nicer a little while back in Formtastic’s test suite.

MarcoPolo shows your app name and environment in your console prompt so you don't accidentally break production
Officially supporting IRB (standard rails console) and pry (via pry-rails gem).

Example:

$ rails console
Loading development environment (Rails 4.2.1)
agencyapp(dev)> 

From Rails 3.0.9, there is a method Hash#to_query that will turn a Hash into a query string:

>> {:a => "a", :b => ["c", "d", "e"]}.to_query
=> "a=a&b%5B%5D=c&b%5B%5D=d&b%5B%5D=e"
>> CGI.unescape _
=> "a=a&b[]=c&b[]=d&b[]=e"

If you're on the browser side, you can serialize nestd objects to query strings using jQuery's $.param.

sudo apt-get install unzip
rake rails:freeze:edge RELEASE=2.2.2

You probably need to activate X-Sendfile.

Very detailed guide to caching Ruby on Rails.

Goes well with the official Rails guide on caching.