where is devise implementation of "authenticate_user!" method?

Question

Where is devise implementation of authenticate_user! method?

I have been looking for it and have not found it so far.

Answer 1

It's in lib/devise/controllers/helpers.rb1 and is generated dynamically (user being only one of the possible suffixes):

def self.define_helpers(mapping) #:nodoc:     mapping = mapping.name      class_eval <<-METHODS, __FILE__, __LINE__ + 1       def authenticate_#{mapping}!(opts={})         opts[:scope] = :#{mapping}         warden.authenticate!(opts) if !devise_controller? || opts.delete(:force)       end        def #{mapping}_signed_in?         !!current_#{mapping}       end        def current_#{mapping}         @current_#{mapping} ||= warden.authenticate(:scope => :#{mapping})       end        def #{mapping}_session         current_#{mapping} && warden.session(:#{mapping})       end     METHODS      ActiveSupport.on_load(:action_controller) do       helper_method "current_#{mapping}", "#{mapping}_signed_in?", "#{mapping}_session"     end   end