11.1. ActiveModelHelper

The ActiveModelHelper module contains helper methods for quickly creating forms from objects that follow Active Model conventions, starting with Active Record models. The form method is able to create an entire form for all the basic content types of a given record. However, it does not know how to assemble user-interface components for manipulating associations. Most Rails developers assemble their own forms from scratch using methods from FormHelper, instead of using this module. However, this module does contain some useful helper for reporting validation errors in your forms that you will use on a regular basis.

Note that as of Rails 3 you must install the following official plugin in order to use this module.