method

register_preview_interceptor

v4.2.1 - Show 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 36
      def register_preview_interceptor(interceptor)
        preview_interceptor = case interceptor
          when String, Symbol
            interceptor.to_s.camelize.constantize
          else
            interceptor
          end

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

register_preview_interceptor

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