module AbstractController::Callbacks::ClassMethods

Take callback names and an optional callback proc, normalize them, then call the block with each callback. This allows us to abstract the normalization across several methods that use it.

Parameters

• callbacks - An array of callbacks, with an optional options hash as the last parameter.

• block - A proc that should be added to the callbacks.

Block Parameters

• name - The callback to be added

• options - A hash of options to be used when adding the callback

# File actionpack/lib/abstract_controller/callbacks.rb, line 73
def _insert_callbacks(callbacks, block = nil)
  options = callbacks.extract_options!
  _normalize_callback_options(options)
  callbacks.push(block) if block
  callbacks.each do |callback|
    yield callback, options
  end
end

If :only or :except are used, convert the options into the :unless and :if options of ActiveSupport::Callbacks. The basic idea is that :only => :index gets converted to :if => proc {|c| c.action_name == “index” }.

Options

• only - The callback should be run only for this action

• except - The callback should be run for all actions except this action

# File actionpack/lib/abstract_controller/callbacks.rb, line 33
def _normalize_callback_options(options)
  _normalize_callback_option(options, :only, :if)
  _normalize_callback_option(options, :except, :unless)
end

Append a callback after actions. See #_insert_callbacks for parameter details. Aliased as after_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 122
      

Append a callback after actions. See #_insert_callbacks for parameter details. Aliased as append_after_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 146
      

Append a callback around actions. See #_insert_callbacks for parameter details. Aliased as append_around_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 178
      

Append a callback before actions. See #_insert_callbacks for parameter details. Aliased as append_before_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 114
      

Append a callback around actions. See #_insert_callbacks for parameter details. Aliased as around_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 154
      

Append a callback before actions. See #_insert_callbacks for parameter details. Aliased as before_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 90
      

Prepend a callback after actions. See #_insert_callbacks for parameter details. Aliased as prepend_after_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 130
      

Prepend a callback around actions. See #_insert_callbacks for parameter details. Aliased as prepend_around_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 162
      

Prepend a callback before actions. See #_insert_callbacks for parameter details. Aliased as prepend_before_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 98
      

Skip before, after, and around action callbacks matching any of the names Aliased as skip_filter.

Parameters

• names - A list of valid names that could be used for callbacks. Note that skipping uses Ruby equality, so it's impossible to skip a callback defined using an anonymous proc using skip_filter

# File actionpack/lib/abstract_controller/callbacks.rb, line 53
def skip_action_callback(*names)
  skip_before_action(*names)
  skip_after_action(*names)
  skip_around_action(*names)
end

Skip a callback after actions. See #_insert_callbacks for parameter details. Aliased as skip_after_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 138
      

Skip a callback around actions. See #_insert_callbacks for parameter details. Aliased as skip_around_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 170
      

Skip a callback before actions. See #_insert_callbacks for parameter details. Aliased as skip_before_filter.

# File actionpack/lib/abstract_controller/callbacks.rb, line 106