Method: ActionController::RespondWith::ClassMethods#respond_to

Defined in:
lib/action_controller/respond_with.rb

#respond_to(*mimes) ⇒ Object

Defines mime types that are rendered by default when invoking respond_with.

respond_to :html, :xml, :json

Specifies that all actions in the controller respond to requests for :html, :xml and :json.

To specify on per-action basis, use :only and :except with an array of actions or a single action:

respond_to :html
respond_to :xml, :json, except: [ :edit ]

This specifies that all actions respond to :html and all actions except :edit respond to :xml and :json.

respond_to :json, only: :create

This specifies that the :create action and no other responds to :json.



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# File 'lib/action_controller/respond_with.rb', line 39

def respond_to(*mimes)
  options = mimes.extract_options!

  only_actions   = Array(options.delete(:only)).map(&:to_sym)
  except_actions = Array(options.delete(:except)).map(&:to_sym)

  hash = mimes_for_respond_to.dup
  mimes.each do |mime|
    mime = mime.to_sym
    hash[mime]          = {}
    hash[mime][:only]   = only_actions   unless only_actions.empty?
    hash[mime][:except] = except_actions unless except_actions.empty?
  end
  self.mimes_for_respond_to = hash.freeze
end