Enumify lets you add an enum command to ActiveRecord models There are four things that the enumify gems adds to your model Validation - The enumify adds a validation to make sure that the field only receives accepted values Super Cool Methods - adds ? and ! functions for each enum value (canceled? - is it canceled, canceled! - change the state to canceled) Callback support - you can add a x_callback method which will be called each time the status changes Scopes - you can easily query for values of the enum

Adds enumerations to your models

Enum machine is a library for defining enums and setting state machines for attributes in ActiveRecord models and plain Ruby classes.

Allows ActiveRecord to better use PostgreSQL's ENUM types.

Elasticity provides a higher level abstraction on top of [elasticsearch-ruby](https://github.com/elasticsearch/elasticsearch-ruby) gem

Make your Ruby objects searchable with Elasticsearch.

Uses EXPLAIN to get an estimate count for an ActiveRecord::Relation

Database based event counter with throttling per time intervals

Everett is a substitute for Active Record Observer on Rails 5.

Hash condition syntax for AR query everywhere!

This concern maintains the illusion that a given object has specified attributes, when those attributes are in fact attached to an associated object. This is particularly useful for different classes within a single-table inheritance table to have access to separate fields in class-specific associations.

A zero-configuration logging solution for projects using Sidekiq, Rails, Sequel, etc.

facetq - "stand-alone" facet (activerecord) models for easy (re)use for sql database queries and more

Facteur allows you add a messaging system in your Rails 3. You can create many mailboxes for your users. They will be able to send and receive messages.

A library for preloading test data in rails applications.

A gem that helps you generate your factory files.

FactoryGirl can now handle JSON representation for an object.

Fast ActiveRecord Serializer

Implements a simple system for handling xml news feeds with caching.

find_by_param is a nice and easy way to handle permalinks and dealing with searching for to_param values