code analysis - Detect before_filter of a nonexistent action in Rails -

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how can detect i've got before_filter of non-existent action in rails?

class postscontroller < applicationcontroller   before_action :authorize_user, only: [:kreate]    def create   end end

this straightup hack, way think of checking before filter on initialize. following checks if controller has before/after filter uses non-existant action , raises exception message if does

# config/initializers/before_filters.rb  # require controllers dir['app/controllers/*'].each |path|   require path.split('/').last if path.include? '.rb' end  # array of controllers controllers = applicationcontroller.descendants  controllers.each |controller|   # filters controller   filters = controller._process_action_callbacks    # actions under controller   actions = controller.action_methods.to_a    filters.each |filter|     # action_conditions filter     action_conditions = filter.instance_variable_get(:@if)      # raise error message if action used in filter not in available controller actions     action_conditions.each |action_condition|       if actions.none? {|action| action_condition.include? action }         message = "#{controller.name} has #{filter.kind.to_s} filter non-existant action (#{action_condition.scan(/'([^']*)'/)[0][0]})"         raise message       end     end   end end

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