Module: Paperclip::Validators::ClassMethods

Defined in:
lib/paperclip/validators.rb

Instance Method Summary collapse

Instance Method Details

#validates_attachment(*attributes) ⇒ Object

This method is a shortcut to validator classes that is in “Attachment…Validator” format. It is almost the same thing as the validates method that shipped with Rails, but this is customized to be using with attachment validators. This is helpful when you’re using multiple attachment validators on a single attachment.

Example of using the validator:

validates_attachment :avatar, :presence => true,
   :content_type => { :content_type => "image/jpg" },
   :size => { :in => 0..10.kilobytes }



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# File 'lib/paperclip/validators.rb', line 28

def validates_attachment(*attributes)
  options = attributes.extract_options!.dup

  Paperclip::Validators.constants.each do |constant|
    if constant.to_s =~ /^Attachment(.+)Validator$/
      validator_kind = $1.underscore.to_sym

      if options.has_key?(validator_kind)
        options[:"attachment_#{validator_kind}"] = options.delete(validator_kind)
      end
    end
  end

  validates(*attributes + [options])
end