Module: Mongoid::Tag::ClassMethods

Defined in:
lib/mongoid_tag/tag.rb

Instance Method Summary collapse

Instance Method Details

#tag(*args) ⇒ Object 



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# File 'lib/mongoid_tag/tag.rb', line 14

def tag(*args)
  options = args.extract_options!
  field_name = (args.blank? ? :tags : args.shift).to_sym
  array_field = "#{field_name}_array".to_sym

  #set default options
  options.reverse_merge!({
    :array_field => array_field
  })

  # register / update settings
  class_options = tagify_options || {}
  class_options[field_name] = options
  self.tagify_options = class_options

  #create fields
  field field_name, :type => String, :default => ""
  field array_field, :type => Array, :default => []

  #class methods
  class_eval %(
    class << self
      def with_any_#{field_name}(tags)
        any_in(:#{array_field} => tags.to_a)
      end

      def with_all_#{field_name}(tags)
        all_in(:#{array_field} => tags.to_a)
      end

      def without_#{field_name}(tags)
        not_in(:#{array_field} => tags.to_a)
      end
    end
  )

  #instance methods
  class_eval %(
    def #{field_name}=(s)
      super
      write_attribute(:#{array_field}, convert_string_to_array(s))
    end

    def #{array_field}=(a)
      super
      write_attribute(:#{field_name}, convert_array_to_string(a))
    end
  )

end