A/B testing made easy

Blackbird are Migrations but then better.

Similar to ActiveRecord::Timestamp, this gem provides a blame datetime and user for create/update modifications to records. Configured models will be blamed when creating or updating, and the blame can cascade to associated models on create, update or delete. Currently, this gem is intended for use with Devise.

Blankable attribtes for ActiveRecord model'

Sets blank attributes to nil as part of validation

A gem to visualize which records will be deleted due to dependent: :destroy and similar options in ActiveRecord associations

Blazer fork that adds support for exporting to XLSX

Blazy(be lazy) is a fluent extension to active record models to reduce number of key strokes in rails console

Allows you to utilize date calculation functionality of DBMS with a uniform API

Wrap classes in a block for easy access

包括access_token、js_api_ticket的获取，发送消息，模板消息，生成二维码，获取用户信息等。

Bodega adds checkout logic to any model in your app!

A simple, flexible DSL for generating reports.

This gem include sorting and filtering methods

A simple system to consolidate and analyze process accounting records

Easy upload management for ActiveRecord w/Google Storage option

A book collection program

Convert datetime to boolean in ActiveRecord.

Trace the datetime of the last time a boolean field has been saved with e true value.

True/False fields have a great simplicity about them, and many times they're perfect for the job! But, it's not uncommon end up in a place where you'd really love to keep some degree of simplicity with a little more detail about when the value was changed. Sometimes you'll want to display that information to the user and other times you'll keep it for auditing or debugging purposes. Either way, boolean_timestamp makes the job easy from the beginning and adds very little code to your app.