ActiveModel-style email address format validator

Enhances application models with a simple and unobtrusive Presenter pattern implementation.

Adds methods for automatic deserialization from standard JSON and XML, and a variant implementation of serialization/deserialization for XML.

Serialize hashes with ActiveModelSerializers.

Typecast your active record attributes to symbols.

ActiveModel validators that validate the type of attributes, and that do recursive validation of contained objects parallel to ActiveRecord's validates_associated.

ActiveModel::Unvalidate provides a clean api for removing existing validations from models

Add SEO friendly permalinks to ActiveRecord model with history support.

Production-grade PostgreSQL HA with deep Rails integration. Automated deployment, replication, failover, and monitoring.

Raw sql with ruby - ideal for reports, large queries, separating SQL from code logic and CQRS

A RAG (Retrieval Augmented Generation) engine that integrates seamlessly with Rails applications

Optimize queries of ActiveRecord preload functions.

Allows ActiveRecord and Rails to use a `cached_at` column for the `cache_key` if available

Instead of scattering validations, strong parameters, and business rules across controllers and models, changesets give you one clear interface for handling data before it touches the database.

A tool to help with cloning of active record objects.

Allows you to use postgresql CTE in ActiveRecord

Custom preloader for ActiveRecord.

Duplicating ActiveRecords is easy again.

ActiveRecord validator, which prevent change column on update

Provides `ActiveRecord::Relation#except`, a convenience method that let's you select all the fields from a table with the exception of the given ones.