Module: NullifyBlanks

Defined in:
lib/nullify_blanks.rb

Overview

NullifyBlanks

This plugin makes ActiveRecord write blank strings as null to nullable columns in the database rather than zero length strings.

Just drop the plugin into your plugins folder and that’s all there is to it. There’s a rake task to nullify zero length strings in existing records if required.

Copyright © 2009 Andrew White, released under the MIT license

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object

:nodoc:



13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'lib/nullify_blanks.rb', line 13

def self.included(base) #:nodoc:
  base.class_eval do

    def write_attribute_with_nullify(attr_name, value) #:nodoc:
      write_attribute_without_nullify(attr_name, nullify?(attr_name, value) ? nil : value)
    end

    alias_method_chain :write_attribute, :nullify

    private

      def nullify?(attr_name, value) #:nodoc:
        value.blank? && ((column = column_for_attribute(attr_name)) && column.text? && column.null)
      end

  end
end