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

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

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.

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

Easy manipulation of sets of ActiveRecord models

Convert MongoDB query to Arel for PostgreSQL + JSON

PaperTrail DropIn replacement to store version in MongoDB

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.

Typically SQL is not a great place to store a counter that is incremented often. For instance if you're counting the number of visits to a page by incrementing a SQL column and that page gets popular then there's a good chance that the SQL counter will become a benchmark. This is because doing an UPDATE on the row in question locks the row during the course of the UPDATE. So for many concurrent UPDATES there will be lots of lock contention. This gem helps with that.

A collection of tools for multitenant Ruby/Rails apps

DB constraints in migrations similiar to ActiveRecord validations. Core classes

ensure active record connections will be reestablished if needed

Adds the ENUM data type natively to ActiveRecord.

Provides NDR classes and class extensions