Agile Web Development with Rails (4th edition) Beta 10 by Sam Ruby, Dave Thomas, David Heinemeier Hansson

By Sam Ruby, Dave Thomas, David Heinemeier Hansson

Ruby on Rails is helping you produce fine quality, beautiful-looking net purposes fast. you consider developing the applying, and Rails looks after the main points. Tens of millions of builders have used this award-winning booklet to profit Rails. it is a vast, far-reaching instructional and reference that is steered via the Rails center workforce. in case you are new to Rails, you will get step by step information. if you are an skilled developer, this ebook provides you with the excellent, insider details you would like. Rails has advanced through the years, and this publication has advanced in addition to it. We nonetheless commence with a step by step walkthrough of creating a true program, and in-depth chapters examine the integrated Rails positive factors. 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 variation retains up. Examples use cookie sponsored classes, HTTP authentication, and lively Record-based varieties, and the ebook focuses all through at the correct solution to use Rails. also, this version now displays Ruby 1.9, a brand new liberate of Ruby with significant practical and function advancements.

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At this time, try the command rails -v. 8/bin to your PATH environment variable. 8/bin:$PATH At this point, we’ve covered Windows, Mac OS X, and Linux. Instructions after this point are common to all three operating systems. 4 Choosing a Rails Version The previous instructions helped you install the latest version of Rails. But occasionally you might not want to run with the latest version. 0 printing, October 28, 2010) 30 S ETTING U P Y OUR D EVELOPMENT E NVIRONMENT you might want to run the version of Rails that matches this version used to develop this book so that you can be absolutely confident that the output and examples exactly match.

Version Control We keep all our work in a version control system (currently Git). We make a point of checking a new Rails project into Git when we create it and committing changes once we have passing tests. We normally commit to the repository many times an hour. If you’re working on a Rails project with other people, consider setting up a continuous integration (CI) system. When anyone checks in changes, the CI system will check out a fresh copy of the application and run all the tests. It’s a simple way to ensure that accidental breakages get immediate attention.

OK, back to the application.

It was nice having you here.

Say <%= link_to "Hello", say_hello_path %> again.

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. 0 printing, October 28, 2010) 48 W HAT W E J UST D ID • 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.

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