Undo for Rails/ActiveRecord - covers destroy, update and create

A Rails plugin for merging Active Record models

Traces the belongs_to associations on ActiveRecord::Base descendants to find the minimum cluster in which all foreign keys are fulfilled in the Entity-Relationship Diagram.

Mi is a generator of migration file instead of `rails generate migration`.

Generator to help with appointment scheduling

Similar article extension for middleman-blog. Finds similar articles using tags, part-of-speech or custom lambda.

Rake tasks for Rails that add groups to migrations

MiniTest matchers for ActiveModel::Validations

A collection of assertions for use with minitest and activerecord. Simplifies testing associations and validations by introspecting associations and validations for you models.

A simple and robust ActiveRecord extension for database sharding. Supports shards management with hash slots, re-sharding support, efficient KVS queries, limited RDB queries.

mmunicode_rails lets you convert you rails app input data to Myanmar Unicode regardless of which fonts the users used.

Iterate through large ActiveRecord datasets

Hierarchical access management system with roles inheritance.

Convert MongoDB query to Arel for PostgreSQL + JSON

Connection proxy for ActiveRecord for single master / multiple slave database deployments

ActiveRecord plugin designed to allow simple multiple table inheritance.

DB constraints in migrations similiar to ActiveRecord validations. Core classes

ensure active record connections will be reestablished if needed

provides functionality similar to acts_as_list. However, by managing position using a fractional indexing system, it allows database record updates during reordering to be completed with only a single update (N = 1)!

Adds the ENUM data type natively to ActiveRecord.