Sets one or several ActiveRecord model fields that will encode to JSON on write and decode back to Ruby hash on read. Works best with database text fields.

Requirements

• json gem
• rails (2.3.*) gem

Installation

./script/plugin install git://github.com/remiprev/has_json_fields.git

Usage

class Order < ActiveRecord::Base
  has_json_fields :paypal_metadata
end

> order = Order.new
=> #<Order id: nil, paypal_metadata: nil>

> order.paypal_metadata
=> {}

> order.paypal_metadata = { :foo => :bar }
=> #<Order id: nil, paypal_metadata: "{\"foo\":\"bar\"}">

> order.paypal_metadata
=> { :foo => :bar }