A Postgres advisory lock client

Adds missing native PostgreSQL data types to ActiveRecord and convenient querying extensions for ActiveRecord and Arel

Helps to save your eyes, when reading hardcore SQL requests in console

Adds the ability to pull random records from ActiveRecord

A modern fast tagging framework for Rails 3.1+

SchemaValidations extends ActiveRecord to automatically create validations by inspecting the database schema. This makes your models more DRY as you no longer need to duplicate NOT NULL, unique, numeric and varchar constraints on the model level.

ActiveRecord has always stored the base class in polymorphic _type columns when using STI. This can have non-trivial performance implications in certain cases. This gem adds the 'store_base_sti_class' configuration option which controls whether ActiveRecord will store the base class or the actual class. Defaults to true for backwards compatibility.'

Sharding

Translatable columns for Rails 4.2 or better, stored in the model table itself.

Introspects your database string field maximum lengths and automatically defines length validations.

Subscribe to changes on ActiveRecord models

Backported from Rails 5.0 to use with 4.x versions

Any_of allows to compute dynamic OR queries.

An Active Record extension for creating associations through lateral joins

Recursively traverse trees using a single SQL query

It is the library to reconnect automatically when ActiveRecord is disconnected from MySQL.

Integrate PostgreSQL's enumerated types with the Rails enum feature

Adds support for postgres arrays to ActiveRecord

This gem enables your model to query the database using the earthdistance extension. This should be much faster than using trigonometry functions over standart indexs.

Refresh ActiveRecord connection on each rack request.