AbstractController::Callbacks::ClassMethods
module AbstractController::Callbacks::ClassMethods
Public Instance Methods
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 69 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 :if
and :unless
options of ActiveSupport::Callbacks.
The basic idea is that :only => :index
gets converted to :if => proc {|c| c.action_name == "index" }
.
Note that :only
has priority over :if
in case they are used together.
only: :index, if: -> { true } # the :if option will be ignored.
Note that :if
has priority over :except
in case they are used together.
except: :index, if: -> { true } # the :except option will be ignored.
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 44 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.
# File actionpack/lib/abstract_controller/callbacks.rb, line 113
Append a callback after actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 134
Append a callback around actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 162
Append a callback before actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 106
Append a callback around actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 141
Append a callback before actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 85
Prepend a callback after actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 120
Prepend a callback around actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 148
Prepend a callback before actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 92
Skip a callback after actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 127
Skip a callback around actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 155
Skip a callback before actions. See #_insert_callbacks for parameter details.
# File actionpack/lib/abstract_controller/callbacks.rb, line 99
© 2004–2017 David Heinemeier Hansson
Licensed under the MIT License.