Module: AbstractController::Collector

Included in:
ActionController::MimeResponds::Collector, ActionMailer::Collector
Defined in:
actionpack/lib/abstract_controller/collector.rb

Class Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(symbol, &block) ⇒ Object (protected) 



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# File 'actionpack/lib/abstract_controller/collector.rb', line 25

def method_missing(symbol, &block)
  const_name = symbol.upcase

  unless Mime.const_defined?(const_name)
    raise NoMethodError, "To respond to a custom format, register it as a MIME type first: " \
      "http://guides.rubyonrails.org/action_controller_overview.html#restful-downloads. " \
      "If you meant to respond to a variant like :tablet or :phone, not a custom format, " \
      "be sure to nest your variant response within a format response: " \
      "format.html { |html| html.tablet { ... } }"
  end

  mime_constant = Mime.const_get(const_name)

  if Mime::SET.include?(mime_constant)
    AbstractController::Collector.generate_method_for_mime(mime_constant)
    send(symbol, &block)
  else
    super
  end
end

Class Method Details

.generate_method_for_mime(mime) ⇒ Object 



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# File 'actionpack/lib/abstract_controller/collector.rb', line 5

def self.generate_method_for_mime(mime)
  sym = mime.is_a?(Symbol) ? mime : mime.to_sym
  const = sym.upcase
  class_eval <<-RUBY, __FILE__, __LINE__ + 1
    def #{sym}(*args, &block)                # def html(*args, &block)
      custom(Mime::#{const}, *args, &block)  #   custom(Mime::HTML, *args, &block)
    end                                      # end
  RUBY
end