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Module: AbstractController::Callbacks::ClassMethods

Relationships & Source Files
Defined in: actionpack/lib/abstract_controller/callbacks.rb

Instance Method Summary

Instance Method Details

#_insert_callbacks(callbacks, block = nil)

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.

[ GitHub ] 

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 119



def _insert_callbacks(callbacks, block = nil)
  options = callbacks.extract_options!
  callbacks.push(block) if block
  options[:filters] = callbacks
  _normalize_callback_options(options)
  options.delete(:filters)
  callbacks.each do |callback|
    yield callback, options
  end
end


  








  

    #_normalize_callback_option(options, from, to)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 99



def _normalize_callback_option(options, from, to) # :nodoc:
  if from_value = options.delete(from)
    filters = options[:filters]
    from_value = ActionFilter.new(filters, from, from_value)
    options[to] = Array(options[to]).unshift(from_value)
  end
end


  








  

    #_normalize_callback_options(options)  
  



  

    

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.
    



  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 94



def _normalize_callback_options(options)
  _normalize_callback_option(options, :only, :if)
  _normalize_callback_option(options, :except, :unless)
end


  








  

    #after_action(names, block)    



  

    

Append a callback after actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 171



rdoc_method :method: after_action


  








  

    #append_after_action(names, block)    



  

    

Append a callback after actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 192



rdoc_method :method: append_after_action


  








  

    #append_around_action(names, block)    



  

    

Append a callback around actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 220



rdoc_method :method: append_around_action


  








  

    #append_before_action(names, block)    



  

    

Append a callback before actions. See _insert_callbacks for parameter details.



If the callback renders or redirects, the action will not run. If there are additional callbacks scheduled to run after that callback, they are also cancelled.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 160



rdoc_method :method: append_before_action


  








  

    #around_action(names, block)    



  

    

Append a callback around actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 199



rdoc_method :method: around_action


  








  

    #before_action(names, block)    



  

    

Append a callback before actions. See _insert_callbacks for parameter details.



If the callback renders or redirects, the action will not run. If there are additional callbacks scheduled to run after that callback, they are also cancelled.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 131



rdoc_method :method: before_action


  








  

    #prepend_after_action(names, block)    



  

    

Prepend a callback after actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


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



rdoc_method :method: prepend_after_action


  








  

    #prepend_around_action(names, block)    



  

    

Prepend a callback around actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 206



rdoc_method :method: prepend_around_action


  








  

    #prepend_before_action(names, block)    



  

    

Prepend a callback before actions. See _insert_callbacks for parameter details.



If the callback renders or redirects, the action will not run. If there are additional callbacks scheduled to run after that callback, they are also cancelled.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 142



rdoc_method :method: prepend_before_action


  








  

    #skip_after_action(names)    



  

    

Skip a callback after actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 185



rdoc_method :method: skip_after_action


  








  

    #skip_around_action(names)    



  

    

Skip a callback around actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 213



rdoc_method :method: skip_around_action


  








  

    #skip_before_action(names)    



  

    

Skip a callback before actions. See _insert_callbacks for parameter details.


  



  [ GitHub ]


  

  


# File 'actionpack/lib/abstract_controller/callbacks.rb', line 153



rdoc_method :method: skip_before_action