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AbstractController::Callbacks::ClassMethods

Public Instance Methods

_insert_callbacks(callbacks, block) click to toggle source

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 lib/abstract_controller/callbacks.rb, line 69
def _insert_callbacks(callbacks, block)
  options = callbacks.last.is_a?(Hash) ? callbacks.pop : {}
  _normalize_callback_options(options)
  callbacks.push(block) if block
  callbacks.each do |callback|
    yield callback, options
  end
end
_normalize_callback_options(options) click to toggle source

If :only or :except are used, convert the options into the primitive form (:per_key) used by ActiveSupport::Callbacks. The basic idea is that :only => :index gets converted to :if => proc {|c| c.action_name == "index" }, but that the proc is only evaluated once per action for the lifetime of a Rails process.

Options

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

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

# File lib/abstract_controller/callbacks.rb, line 33
def _normalize_callback_options(options)
  if only = options[:only]
    only = Array(only).map {|o| "action_name == '#{o}'"}.join(" || ")
    options[:per_key] = {:if => only}
  end
  if except = options[:except]
    except = Array(except).map {|e| "action_name == '#{e}'"}.join(" || ")
    options[:per_key] = {:unless => except}
  end
end
after_filter(names, block) click to toggle source

Append an after filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 113
      
append_after_filter(names, block) click to toggle source

Append an after filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 134
      
append_around_filter(names, block) click to toggle source

Append an around filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 162
      
append_before_filter(names, block) click to toggle source

Append a before filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 106
      
around_filter(names, block) click to toggle source

Append an around filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 141
      
before_filter(names, block) click to toggle source

Append a before filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 85
      
prepend_after_filter(names, block) click to toggle source

Prepend an after filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 120
      
prepend_around_filter(names, block) click to toggle source

Prepend an around filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 148
      
prepend_before_filter(names, block) click to toggle source

Prepend a before filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 92
      
skip_after_filter(names, block) click to toggle source

Skip an after filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 127
      
skip_around_filter(names, block) click to toggle source

Skip an around filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 155
      
skip_before_filter(names, block) click to toggle source

Skip a before filter. See _insert_callbacks for parameter details.

# File lib/abstract_controller/callbacks.rb, line 99
      
skip_filter(*names, &blk) click to toggle source

Skip before, after, and around filters matching any of the names

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 lib/abstract_controller/callbacks.rb, line 51
def skip_filter(*names, &blk)
  skip_before_filter(*names)
  skip_after_filter(*names)
  skip_around_filter(*names)
end

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