Answers for "ArgumentError (Before process_action callback :authenticate_api_request has not been defined) rails error"

ArgumentError (Before process_action callback :authenticate_api_request has not been defined) rails error

class MessagesController < ApplicationController
  skip_before_filter :verify_authenticity_token 
  skip_before_filter :authenticate_user!, :only => "reply", :raise => false

end
# Adding :raise => false, helped solved error