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Raised when a nested respond_to is triggered and the content types of each are incompatible. For example:

respond_to do |outer_type|
  outer_type.js do
    respond_to do |inner_type|
      inner_type.html { render body: "HTML" }
    end
  end
end
Methods
N
Constants
DEFAULT_MESSAGE = "respond_to was called multiple times and matched with conflicting formats in this action. Please note that you may only call respond_to and match on a single format per action."
 
Class Public methods
new(message = nil)
# File actionpack/lib/action_controller/metal/exceptions.rb, line 67
def initialize(message = nil)
  super(message || DEFAULT_MESSAGE)
end