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.

ActiveRecord 2.3 compatible gem "allowing you to hide and restore records without actually deleting them." Yes, like acts_as_paranoid, only with less code and less complexity.

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

A Ruby mailing list library designed to be integrated into other applications.

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

Add table-level database locking to ActiveRecord

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

Object creation methods everyone already has

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.

Provides NDR classes and class extensions