Notes

Use it together with share_examples_for like this:

share_examples_for "a shape" do
it "should have a color" do
  # ...
end

it "should have a center point" do
  # ...
end
end

describe "a circle" do
it_should_behave_like "a shape"

it "should be round" do...

er...it will:

==== Code example

class PersonType < ActiveRecord::Base
class << self
  # Add the mixin here:
  extend ActiveSupport::Memoizable
  def mister
    find_by_name('Mister')
  end
  memoize :mister
end
end

Typically you would call

my_object.stub!(:updated_at).and_return(time_object)

In my experience, if you ever have a controller action named "process", your controller will cease to function, as there is both a class and instance method called process in ActionController::Base.

There are undoubtedly other action names that will cause conflicts, but this one is particular I've...

You can call it several times, like:

class Comment < ActiveRecord::Base
validate :must_be_friends
validate :must_be_awesome
...

or with several arguments:

class Comment < ActiveRecord::Base
validate :must_be_friends, :must_be_awesome
...

Remember that checking for a value is a potentially slow operation (all the elements might be iterated) as oposed to querying a key (e.g. with has_key?), which is supposed to be fast in a Hash.

If you want to access the element index when using map, you can do it with enum_for:

(1..6).enum_for(:each_with_index).map { |v, i| "index: #{i} value: #{v}" } #=> ["index: 0 value: 1", "index: 1 value: 2", "index: 2 value: 3", "index: 3 value: 4", "index: 4 value: 5", "index: 5 value: 6"]

Remember that checking for a value is a potentially slow operation (all the elements might be iterated) as oposed to querying a key (e.g. with has_key?), which is supposed to be fast in a Hash.

This plugin may also help solve the problem from the model side.

http://github.com/rxcfc/multi_assignment_sanity

In 2.2 and greater this has moved to ActiveSupport::Dependencies::Loadable#unloadable

While OpenStruct#new is rather indifferent to the kind of keys submitted, marshal_load requires Symbol keys only. Use of a string can cause difficulty.

To fix:

marshal_load(hash.inject({ }) { |h, (k,v)| h[k.to_sym] = v; h })

As a note, Rails has the Hash#symbolize_keys method that can be used...

This method functions a lot like Hash#merge! only with a different name.

f = OpenStruct.new
# => #<OpenStruct>
f.marshal_load({:foo => 'bar'})
# => #<OpenStruct foo="bar">
f.foo
# => "bar"

For those familiar with JavaScript naked Objects, this is very similar.

On previous versions of TestRequest it was possible to set the request_parameters on the new action. This option is now gone, but it's still possible to set the parameters after initialization.

==== Code example

request = ActionController::TestRequest.new request.env["action_controller.request....

As far as I can tell script/generate will happily take the plural table name, at least in Rails 2.3.

This method is functionally identical to Array#reject!

Instead of disabling the CSRF check you can pass the authenticity_token field in your forms, eg:

<%= hidden_field_tag :authenticity_token, form_authenticity_token -%>

If you're running Rails >= 2.2.1 [RC2] and Ruby 1.8.7, you don't need plugin below. Ruby 1.8.7 supports SMTP TLS and Rails 2.2.1 ships with an option to enable it if you're running Ruby 1.8.7.

All You need to do is:

ActionMailer::Base.smtp_settings = { :enable_starttls_auto => true }

REST adds many constraints. It restricts your controllers to seven actions. Normally this is okay, but sometimes you need to add your own custom actions.

http://railscasts.com/episodes/35-custom-rest-actions

Can someone add some more information to this?