respond_to(*mimes)
Instance Public methods
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