Module: IpAsInt::IpAddressAttribute::IpAddressAttributeClassMethods

Defined in:
lib/ip_as_int/ip_address_attribute.rb

Instance Method Summary collapse

Instance Method Details

#ip_address(*attrs) ⇒ Object 



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# File 'lib/ip_as_int/ip_address_attribute.rb', line 11

def ip_address(*attrs)

  options = attrs.extract_options!
  options = { :scope => true, :validation => true }.merge(options)

  unless new.respond_to?(:read_attribute)
    define_method :read_attribute do |attr|
      instance_variable_get("@#{attr}_raw")
    end
    define_method :write_attribute do |attr,val|
      instance_variable_set("@#{attr}_raw", val)
    end
  end

  attrs.each do |attr|

    define_method "#{attr}=" do |ip_string|
      instance_variable_set("@#{attr}", ip_string)
      ip_int = begin
        if ip_string
          instance_variable_set("@#{attr}_invalid",false)
          ::IpAsInt.ip2int(ip_string)
        end
      rescue ArgumentError
        instance_variable_set("@#{attr}_invalid",true)
        nil
      end
      write_attribute attr, ip_int
    end

    define_method attr do
      if ip_string = instance_variable_get("@#{attr}")
        ip_string
      else
        ip_int =  read_attribute(attr)
        instance_variable_set("@#{attr}",::IpAsInt.int2ip(ip_int)) if ip_int
      end
    end

  end

  if options[:scope] && respond_to?(:where)
    attrs.each do |attr|
      scope attr, (lambda { |*ip_strings|
                     ip_int = ip_strings.map { |ip_string| ::IpAsInt.ip2int(ip_string)  }
                     where(attr => ip_int)
      })
    end
  end

  if options[:validation]
    validates(*(attrs << { :ip_address => options[:validation] }))
  end
end