auto_set

auto_set automatically update a column from a relationship in Rails.

You can use auto_set as a gem in Rails 4.

To use the gem version, put the following gem requirement in your Gemfile:

gem "auto_set"

Supposing you have 3 models: Project, Group and Task and when you create a task in a groupit need to be related also to project. So, to auto_set update task.project_id with group.project.id, you do this:

auto_set :project, :group

The is also another case where you have a code that can be entered by the user and you want to relate it to an id. Let's assume that Group has a column project_code and you want to set project_id with that project id:

auto_set :project, from: :code

You can set different type of callback:

auto_set :column, :parent, before: :create

before can be used in both cases of use and it can be save (default), create or validation.

Tested with Rails 4.0.13 in Ruby 2.0.0

MIT License. Copyright 2011 29sul Tecnologia da Informação http://www.29sul.com.br/