If you want to generate fixtures from development database for a Ruby on Rails application here is a helper

FixtureParts registers data in DB for each test.

Adds a test that validates all your Rails fixtures.

Moderate records in Rails

Easily add a styleguide to your rails app.

Rails 3 engine that provides ajax flash messages for your rails app.

FlammarionRails

An issue catcher, manager, and mailer for rails apps.

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Rails helper to style flash messages

Flash Gordon is a gem written to simplify flash notification calls from anywhere in your application, need a flash message appended during a controller action? model method? or view? The syntax and usage is consistent and simple. Take a spin :)

A quick and dirty way to send a message

Persistent flash messenger.

Integrate with flash-messenger to provide a simple flash messages.

Direct multi-file uploader to s3

Unified server/client flash messages for Rails with consistent templates—Turbo-ready, customizable, easy to integrate.

flashy provides helper methods to render flash messages in Rails views. Besides, it provides a javascript library to create flash messages in the browser

Allows to flat an object and his children (ActiveRecord based) into one level, so you can create them all without building a complex form.

Flatter transforms a deeply nested graph of ActiveModel-like objects to a single mapper object that handles all the nested attributes and has a very flexible behavior for handling validation, saving routines with a DRY approach.

Set of extensions to be used with Flatter gem. They provide a number of optional auxiliary functionality, which may be very helpful from case to case, especially if using Flatter for mapping ActiveRecord objects