By Sam Ruby, Dave Thomas, David Heinemeier Hansson

Ruby on Rails is helping you produce fine quality, beautiful-looking internet purposes speedy. you think about growing the applying, and Rails looks after the main points. Tens of hundreds of thousands of builders have used this award-winning publication to benefit Rails. it is a vast, far-reaching educational and reference that is urged via the Rails middle workforce. in case you are new to Rails, you will get step by step assistance. in case you are an skilled developer, this publication provide you with the great, insider details you wish. Rails has advanced through the years, and this ebook has developed besides it. We nonetheless begin with a step by step walkthrough of creating a true program, and in-depth chapters examine the integrated Rails good points. This version now provides new Ruby and Rails clients additional information at the Ruby language and takes extra time to give an explanation for key suggestions all through. most sensible practices on the best way to follow Rails proceed to alter, and this version retains up. Examples use cookie subsidized periods, HTTP authentication, and energetic Record-based varieties, and the ebook focuses all through at the correct solution to use Rails. also, this variation now displays Ruby 1.9, a brand new liberate of Ruby with colossal practical and function advancements.

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P> At this point, we’ve completed our toy application and in the process verified that our installation of Rails is functioning properly. After a brief recap, it is now time to move on to building a real application. 4 What We Just Did We constructed a toy application that showed us the following: • How to create a new Rails application and how to create a new controller in that application • How to create dynamic content in the controller and display it via the view template • How to link pages together This is a great foundation, and it didn’t really take much time or effort.

If you think you need more background on the Ruby language, and at the risk of being grossly self-serving, we’d like to suggest that the best way to learn Ruby, and the best reference for Ruby’s classes, modules, and libraries, is Programming Ruby [TFH08] (also known as the PickAxe book). Welcome to the Ruby community! 1 Ruby Is an Object-Oriented Language Everything you manipulate in Ruby is an object, and the results of those manipulations are themselves objects. When you write object-oriented code, you’re normally looking to model concepts from the real world.

4, Choosing a Rails Version, on the following page. See you there. 3 Installing on Linux Start with your platform’s native package management system, be it apt-get, dpkg, portage, rpm, rug, synaptic, up2date, or yum. The first step is to install the necessary dependencies. 6. You can find out the version by issuing gem -v. How to upgrade your version of RubyGems is described in the sidebar on the next page. 5. 0 printing, February 2, 2011) 30 C HOOSING A R AILS V ERSION Upgrading RubyGems on Linux There are many different ways to upgrade RubyGems.

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