Example: "If a restaurant can have many menu items and a chain has many menu items, ensure all restaurants have the menu items of the chain they belong to."

initial-test-data provides a way to create a test fixture using Active Record, Factory Girl, etc.

JSON serialization for Rails. Straight-forward attributes. Only serialize what you want. Optimally obeys eager-loaded associations

Innkeeper allows Rack applications to deal with database multitenancy through ActiveRecord

ActiveRecord::Relation wrapper that can be modified/combined in place

Interface the inputex UI library with ActiveModel

A skeleton that allows extracting queries into atomic, reusable classes.

Super simple way to insert rows into a database. Currently only supports postgres.

This is a custom gem that extends ActiveRecord to enable the expression of SQL `INSERT INTO ... SELECT ...` queries in a more convenient way. It allows you to copy data from one table to another based on specified conditions using a simple and expressive syntax.

Given an existing MySQL database, Inspectar will dynamically generate activerecord classes for each of the tables.

Setup your rails project with everything you need quickly. Not really a Gem, but everything you need is in the gem's files'.

Single table inheritance mechanism built on integer types

after_commit is an ActiveRecord gem to add an after_commit callback. This can be used to trigger things only after the entire transaction is complete.

A gem to follow, follow request and block between any ActiveRecord models.

Internal Affairs integration helper

Module to provide helper methods for interpreting American formatted date strings.

InterstateMachine is a simple state machine which use interactors to trigger transitions

Find unsafe ActiveRecord validations and the invalid data left behind

Finds invalid ActiveRecord entries and reports them

A gem that lets you control the flow of products, and orders through invoices