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You can use Fixtures in Rai...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
Learn how to redirect your Rails app users to the current page after they login
Learn how to add @mentions, autocomplete, notifications, and link parsing
Learn how to build an activity feed from scratch and how to manage lots of flexible partials
Learn how to add authentication to an RSS feed with Rails and Devise
Separate responsibilities of Javacsript from your HTML tags by using the data-behavior attribute
Learn how I discovered and solved a performance bug in OneMonth.com's view partial
Refactor and simplify your associations and views using Null Objects that let you remove conditionals and have more robust code
Learn how to refactor your Rails model callbacks into plain old ruby objects that help organize your code
Learn how to handle subdomains in your Rails application for multi-tenant applications
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