Foreigner
Adds foreign key helpers to ActiveRecord migrations and dumps foreign keys to schema.rb for MySQL, PostgreSQL, and SQLite.
What is Foreigner?
Foreigner is a Ruby gem that adds foreign key support to ActiveRecord migrations for Rails applications. It provides migration helpers to create and remove foreign key constraints and ensures these constraints are properly reflected in the schema.rb file. It was designed for Rails versions before native foreign key support was introduced in Rails 4.2.
Rails developers working with MySQL, PostgreSQL, or SQLite databases who need to manage foreign key constraints in their migrations and schema files, particularly those using Rails versions prior to 4.2.
Foreigner offers a simple, database-agnostic API for defining foreign keys in migrations, ensuring data integrity and consistent schema dumps. It integrates seamlessly with ActiveRecord's migration DSL and supports key database adapters without requiring raw SQL.
Overview
Adds foreign key helpers to migrations and correctly dumps foreign keys to schema.rb
Use Cases
Best For
- Adding foreign key constraints to ActiveRecord migrations in Rails 3.x or 4.0/4.1 applications
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