Ruby on Rails 5.1 Release Notes — Ruby on Rails Guides
Highlights in Rails 5.1: Yarn Support Optional Webpack support jQuery no longer a default dependency System tests Encrypted secrets Parameterized mailers Direct & resolved routes Unification of form_for and form_tag into form_with These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the changelogs or check out the list of commits in the ma
Active Record and PostgreSQL — Ruby on Rails Guides
This guide covers PostgreSQL specific usage of Active Record. After reading this guide, you will know: How to use PostgreSQL's datatypes. How to use UUID primary keys. How to include non-key columns in indexes. How to use deferrable foreign keys. How to use unique constraints. How to implement exclusion constraints. How to implement full text search with PostgreSQL. How to back your Active Record
Action Cable Overview — Ruby on Rails Guides
In this guide, you will learn how Action Cable works and how to use WebSockets to incorporate real-time features into your Rails application. After reading this guide, you will know: What Action Cable is and its integration backend and frontend How to set up Action Cable How to set up channels Deployment and Architecture setup for running Action Cable 1 What is Action Cable?Action Cable seamlessly
Getting Started with Engines — Ruby on Rails Guides
In this guide you will learn about engines and how they can be used to provide additional functionality to their host applications through a clean and very easy-to-use interface. After reading this guide, you will know: What makes an engine. How to generate an engine. How to build features for the engine. How to hook the engine into an application. How to override engine functionality in the appli
Ruby on Rails 5.0 Release Notes — Ruby on Rails Guides
Highlights in Rails 5.0: Action Cable Rails API Active Record Attributes API Test Runner Exclusive use of rails CLI over Rake Sprockets 3 Turbolinks 5 Ruby 2.2.2+ required These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the changelogs or check out the list of commits in the main Rails repository on GitHub. 1 Upgrading to Rails 5.0If y
Action Controller Overview — Ruby on Rails Guides
In this guide, you will learn how controllers work and how they fit into the request cycle in your application. After reading this guide, you will know how to: Follow the flow of a request through a controller. Restrict parameters passed to your controller. Store data in the session or cookies, and why. Work with action callbacks to execute code during request processing. Use Action Controller's b
Configuring Rails Applications — Ruby on Rails Guides
This guide covers the configuration and initialization features available to Rails applications. After reading this guide, you will know: How to adjust the behavior of your Rails applications. How to add additional code to be run at application start time. 1 Locations for Initialization CodeRails offers four standard spots to place initialization code: config/application.rb Environment-specific co
Upgrading Ruby on Rails — Ruby on Rails Guides
This guide provides steps to be followed when you upgrade your applications to a newer version of Ruby on Rails. These steps are also available in individual release guides. 1 General AdviceBefore attempting to upgrade an existing application, you should be sure you have a good reason to upgrade. You need to balance several factors: the need for new features, the increasing difficulty of finding s
Active Record Migrations — Ruby on Rails Guides
Migrations are a feature of Active Record that allows you to evolve your database schema over time. Rather than write schema modifications in pure SQL, migrations allow you to use a Ruby Domain Specific Language (DSL) to describe changes to your tables. After reading this guide, you will know: Which generators you can use to create migrations. Which methods Active Record provides to manipulate you
Active Job Basics — Ruby on Rails Guides
This guide provides you with all you need to get started in creating, enqueuing and executing background jobs. After reading this guide, you will know: How to create jobs. How to enqueue jobs. How to run jobs in the background. How to send emails from your application asynchronously. 1 What is Active Job?Active Job is a framework for declaring jobs and making them run on a variety of queuing backe
Ruby on Rails 4.1 Release Notes — Ruby on Rails Guides
Highlights in Rails 4.1: Spring application preloader config/secrets.yml Action Pack variants Action Mailer previews These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the changelogs or check out the list of commits in the main Rails repository on GitHub. 1 Upgrading to Rails 4.1If you're upgrading an existing application, it's a great i
Action Mailer Basics — Ruby on Rails Guides
This guide provides you with all you need to get started in sending emails from your application, and many internals of Action Mailer. It also covers how to test your mailers. After reading this guide, you will know: How to send email within a Rails application. How to generate and edit an Action Mailer class and mailer view. How to configure Action Mailer for your environment. How to test your Ac
Rails Routing from the Outside In — Ruby on Rails Guides
This guide covers the user-facing features of Rails routing. After reading this guide, you will know: How to interpret the code in config/routes.rb. How to construct your own routes, using either the preferred resourceful style or the match method. How to declare route parameters, which are passed onto controller actions. How to automatically create paths and URLs using route helpers. Advanced tec
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Layouts and Rendering in Rails — Ruby on Rails Guides