Agile Web Development

ValidatesExistence

============

This plugin adds a new validates_existence_of method to ActiveRecord::Base.

The validates_existence_of validator checks that a foreign key in a belongs_to association points to an exisiting record. If :allow_nil => true, then the key itself may be nil. A non-nil key requires that the foreign object must exist. Works with polymorphic belongs_to.

The default error message is "does not exist".

Example

=

  class Person < ActiveRecord::Base
    belongs_to :address
    validates_existence_of :address
  end

Copyright © 2007 Josh Susser, released under the MIT license

Owner: Josh Susser

Home: http://blog.hasmanythrough.com/2007/7/14/validate-your-existence

Repository: http://svn.hasmanythrough.com/public/plugins/validates_existence/

License: Source-available-proprietary

Category: Model