Keep your code DRY by inferring column validations from table properties! Automagically validate presence, length, numericality, inclusion and uniqueness of ActiveRecord backed columns.

Using Inherited Resources is an excellent way to reduce the amount of repetition in your controllers. But what about views? A lot of times resources share the same views, so why not DRY 'em up using Inherited Resources Views!

ActionParameter helps you move all your parameter's logic into it's own class. This way you'll keep your controllers dry and they would be easier to test.

The Don't Repeat Yourself Markup Language

Super DRY Configuration for Ruby, Rails, and Sinatra Apps. With Pluggable NoSQL/SQL backends using Moneta

This gem allows similar ActiveRecord validates_* commands to be grouped together in blocks and pruned of repeated parameters. How often have you had a block of validation commands in an ActiveRecord object that are repeated, especially :id or :unless options? Does this look familiar? validat...

Include more records in your relations/associations, just to DRY your code.

A collection of convenient assertions for faster & DRY'er testing of Sequel database apps/gems.

This gem provides a set of modules and methods to help quickly and DRYly create a test automation framework using Ruby and Watir (or watir-webdriver).

SuperResources DRYs up your controller code.

InheritedViews brings the DRY principle to the controller and view layers within Rails applications

A lightweight rule engine with a declarative DSL for defining conditions and actions. Supports priority-based ordering, rule tagging with selective evaluation, first-match and all-match modes, dry run, conflict detection, serialization, chaining, and per-rule execution statistics.

A framework for DRY RESTful APIs in Ruby on Rails.

My SAKURA gem with various utilities. This is my swiss-army knife for Linux and Mac. See README.md for amazing examples, like: richelp ubuntu # shows a richelp of my 'ubuntu' cheatsheet richelp sakura synopsis # shows a riche...

shared base for request_handler using dry-* gems

Like Active Record's validation feature, but for destroying models

DRYing up Many-to-Many Relationships in ActiveRecord

Applications that have complex email sending logic have DRYness problems. ActiveMailer solves that by making a legitimate email model where all sending logic belongs. It is also capable of acting as an audit trail for email sending.

FrontCompiler is a Ruby based JavaScript/CSS/HTML compressor. It provides the basic JavaScript/CSS/HTML minifying feature. Plus it can create albeit packed JavaScript files, can inline CSS inside of JavaScript, works with DRYed CSS files and also can work as a RubyOnRails plugin.

Build seaworthy command-line apps like a Captain with a powerful Ruby DSL.