Flowdock
method

respond_to

Importance_1
Ruby on Rails latest stable (v4.2.1) - 1 note - Class: ActionController::MimeResponds::ClassMethods
respond_to(*) public

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November 19, 2014
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Also useful without respond_with

Using the class method #respond_to allows controller-level specification of the allowed mime-types. Without #respond_with , it enables a

Completed 406 Not Acceptable

response rather than

ActionView::MissingTemplate

error when an unsupported type is requested.

See: http://www.justinweiss.com/blog/2014/11/03/respond-to-without-all-the-pain/