Adds a add_foreign_key_constraint schema method, and extends the schema dump code to output these foreign key constraints. Only MySQL and PostgreSQL are currently supported. Examples ======== # adds a constraint on projects.customer_id with parent customers.id add_foreign_key :projects, :customer_id, :customers, :id # adds a constraint on projects(a, b) with parent(a, b) with the default RESTRICT update/delete actions add_foreign_key "child", ["a", "b"], "parent", ["a", "b"] # adds a constraint with the ON UPDATE action set to CASCADE and the ON DELETE action set to SET NULL add_foreign_key 'projects', 'customer_id', 'customers', 'id', :on_update => :cascade, :on_delete => :set_null The following actions are defined: :restrict :no_action :cascade :set_null (aka :nullify) :set_default Note that MySQL does not support :set_default, and also treats :no_action as :restrict. Compatibility ============= Supports mysql, mysql2, postgresql. Currently tested against Rails 3.2.13 on 2.0.0p0 and Rails 3.2.13, 3.1.8, 3.0.17, and 2.3.14 on Ruby 1.8.7.

Protect the foreign keys in your Rails models by checking the user_id of self against the user_id of all relations.

Forest is a modern admin interface that works on all major web frameworks. This gem makes Forest admin work on any Ruby application.

Easily setup and run anonymization policies

Custom form builder that attempts to make your forms friendly

Provides virtual attributes to get or set certain model values (like dates) in human readable/localized format.

Add methods that format attributes from/to helper methods.

Form objects for Rails applications

Fourth Dimensional is an event sourcing library to account for the state of a system in relation to time.

Rspec matchers used in fractalgarden.com

FragmentedValidation allows your model to only validate selected attributes.

Allows to quickly build well structured complex Ruby apps.

A concise and easy-to-use Ruby library that connects ActiveRecord to the Sphinx search daemon, managing configuration, indexing and searching.

Add simple versioning to ActiveRecord models. rails 4.1

Redis backed friendship engine for your Ruby models

Pattern to add fields to ActiveRecord models, using an associated document, without needing schema migrations.

Uses parent and child table names to create FK with neat ids

FriendlyId is the "Swiss Army bulldozer" of slugging and permalink plugins for Ruby on Rails. It allows you to create pretty URL's and work with \ human-friendly strings as if they were numeric ids for ActiveRecord models.

RedHill on Rails Core is a plugin that features to support other RedHill on Rails plugins. Those features include: * Creating and dropping views; * Creating and removing foreign-keys; * Obtaining indexes directly from a model class; and * Determining when Schema.define() is running.

Translates record using SQL from clause.