activemodel-attribute_changed_specification

Expand _changed? method defined in ActiveModel::Dirty. You can specify changed attribute value.

Installation

Add this gem to your Gemfile

gem 'activemodel-attribute_changed_specification'

Install via bundle

$ bundle

Specify value changes.

user = User.new
user.name = 'Bob'
user.name_changed?(from: nil, to: 'Bob') # => true
user.name_changed?(from: 'Paul', to: 'Bob') # => false

using only from or to

user = User.new
user.name = 'Bob'
user.name_changed?(to: 'Bob') # => true
user.name_changed?(from: 'Paul') # => false

You can still use original _changed? method.

user = User.new
user.name = 'Bob'
user.name_changed? # => true