Nested_attributes_for_extjs is a project mainly written in Ruby, based on the MIT license.
An easy way to Create/Update/Destroy related data to an ActiveRecord model from an extjs front-end.
= nested_attributes_for_extjs
Allow extjs to use NestedAttributes in ActiveRecord models.
This behaviour has been extracted from NestedAttributes module.
As an example:
class Book < ActiveRecord::Base has_many :pages accepts_nested_attributes_extjs_for :pages end
book.pages_attributes = attributes
{ "ext-record-1" => { "number" => "1", ... }, "ext-record-2" => { "number" => "2", ... }, 3 => { "number" => "30", } }
It means that we are creating 2 new pages for the book ("1" and "2") and updating the page whose id is 3 to have the number "30". All the other pages will be removed from the book (This is a very important thing to have in mind).
We can se that keys like "ext-record-..." appears in the hash when a new element is going to be created. That is so because Extjs doesn't allow arrays in the parameters (well, we could encode the array in a JSON object, but it isn't the purpose of this plugin).
== TODO