method

register_preview_interceptor

rails latest stable - Class: ActionMailer::Previews::ClassMethods

register_preview_interceptor(interceptor)

public

Register an Interceptor which will be called before mail is previewed. Either a class or a string can be passed in as the Interceptor. If a string is passed in it will be constantized.

# File actionmailer/lib/action_mailer/preview.rb, line 66
      def register_preview_interceptor(interceptor)
        preview_interceptor = interceptor_class_for(interceptor)

        unless preview_interceptors.include?(preview_interceptor)
          preview_interceptors << preview_interceptor
        end
      end

register_preview_interceptor

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