An example of embedding ActiveRecord (and migrations) in a cli app

Price history with easy.

A generalized Rails-like preloader

Adds an add_primary_key method for Rails migrations.

Initializer to auto set ID, when PK is a uuid.

This gem allows to define a custom order in which callbacks are called

Flip through Active Record models in order using next and previous scopes and instance methods.

Run tests in priority

A Ruby gem that allows Oauth2 protection with Doorkeeper for Grape Api's

Proactive Support module.

Store your metrics generated with the 'process_metrics' gem using ActiveRecord

Most Rails blogging tools include everything you could ever want, including things you don't. Proclaim tries to provide the simplest (yet beautiful) implementation of a blog via a mountable engine; if more functionality is desired, it can easily be combined with other engines.

An easy, and extensible transactional event notification add on for Spree.

PBM for web

A proctoring rails engine to provide proctoring features to varuious apps in a decentralised way.

This gem should support you when using rails scaffold (or a lot of simple CRUD models/views/controllers) in a programmable fashion, removing repeated code when possible and making it configurable

Progstr Filer is a developer-friendly file and attachment hosting service that lets you easily build apps that store and share files.

Wrap model properties into a single database column and declare properties from within the model.

Protected is a gem for rails that gives you user authorization, administration, auditing in a mountable Engine

Protect records from being destroyed in a declarative way. Simply add 'protect_if :dont_delete, "Record is marked as not deletable"' to your ActiveRecord model. Your record will no be destroyed and the given message is added to the errors object.