Opt-in validations for your ActiveRecord models based on your MySQL database constraints, including text field size, UTF-8 encoding issues, and NOT NULL constraints.

Provides transparent encryption for ActiveRecord. You can protect your data with any encryption algorithm you want.

ActiveRecord Firebird Adapter for Rails 3 and 4 with support for migrations.

Save unnecessary round trips to the database

An ActiveRecord plugin providing a higher-level abstraction for SQL 'LIKE' queries

Add unsigned option to integer type for ActiveRecord's MySQL2 adapter

ActiveRecord OpenTracing intrumenter

This gem adds comments to the SQL to indicate where the SQL parts are constructed.

Gives a hook on MySQL warnings that allow you to either raise or log them.

Active Record support for PostgreSQL JSON type

Amazon Redshift adapter for ActiveRecord 7+

An Active Record extension for Multitenancy with PostgreSQL Row Level Security

Create ActiveRecord relations from UNIONs

Automatic database view creation for ActiveRecord

ActiveRecord extension for sorted adjacency lists support

This is a ruby gem that provides drop in replacement for acts_as_tree but makes use of SQL recursive statement. Be sure to have a DBMS that supports recursive queries when using this gem (e.g. PostgreSQL or SQLite).

ActiveRecord::Base.connection.after_transaction_commit { ... }

Annotate your models and keep your comments about fields.

Easing the creation of DTOs from your ActiveRecord models.

Provides an easy way to do something that is possible in Rails but still a bit close to the metal using store_accessor: create typecasted, persistent attributes that are not columns in the database but stored in the JSON "data" column. Also supports infinite nesting of embedded models.