This RubyGem allows you to prevent particular database fields from being changed after an Active Record object is created. A validation error occurs on updates if an attribute of a model object is different from its value in the database.

This RubyGem allows you to prevent particular database fields from being changed after an Active Record object is created. A validation error occurs on updates if an attribute of a model object is different from its value in the database.

Updates a specified column with an pre-configured value on delete/destroy. Supports destroy hooks.

This ActiveRecord plugin saves formatted content (Markdown, Textile, HTML) after normalizing it.

Message destination arbiter

This Ruby Rails gem allows a robust nested SQL text search. To date is has only been tested on MariaDB/MySQL.

Automatically load and include all common Martinet features for a standard Rails environment

A multi-dimensional semantic layer on top of ActiveRecord that allows running pivot table queries and rendering them as CSV, HTML, or KickChart-ready hashes. Supports time dimensions, cohort analysis, custom rollups, and drilling through to the underlying ActiveRecord objects.

execute massive imports!

This gem can reduce rounds trips between your app and the database from thousands down to a single query

MASTer table on Active Record

A master record cache plugin

システムが稼働する上で最初から必要なデータ（マスタデータ）を管理するツールです。

Acts as a ActiveRecord adapter and allows you to setup a master-slave environment.

A ruby gem that matches two arrays and executes a callback based on the match result.

Utilities to materialize routemaster topics

Helps you spawn new inner views and lookup the right one.

A simple resource observer designed to detect change over time.

A simple, yet flexible approach to model-based authorization

serialize and deserialize activerecord attributes using json or zlib