Download Agile Web Development with Rails 3.1 (Pragmatic Programmers) by Sam Ruby, Dave Thomas, David Heinemeier Hansson PDF

By Sam Ruby, Dave Thomas, David Heinemeier Hansson

ISBN-10: 1934356549

ISBN-13: 9781934356548

Ruby on Rails is helping you produce top quality, beautiful-looking net functions fast. you think about developing the applying, and Rails looks after the main points. Tens of millions of builders have used this award-winning booklet to benefit Rails. it is a vast, far-reaching instructional and reference that is advised by means of the Rails middle group. if you are new to Rails, you will get step by step tips. in case you are an skilled developer, this ebook provides you with the great, insider details you would like. Rails has advanced through the years, and this publication has advanced besides it. We nonetheless commence with a step by step walkthrough of creating a true software, and in-depth chapters examine the integrated Rails good points. This version now supplies new Ruby and Rails clients additional info at the Ruby language and takes extra time to provide an explanation for key ideas all through. top practices on the right way to follow Rails proceed to alter, and this variation retains up. Examples use cookie sponsored periods, HTTP authentication, and energetic Record-based types, and the booklet focuses all through at the correct solution to use Rails. also, this variation now displays Ruby 1.9, a brand new free up of Ruby with giant useful and function advancements.

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Extra info for Agile Web Development with Rails 3.1 (Pragmatic Programmers)

Sample text

Java developers are used to frameworks such as Tapestry and Struts, which are based on MVC. But Rails takes MVC further: when you develop in Rails, you start with a working application, there’s a place for each piece of code, and all the pieces of your application interact in a standard way. Professional programmers write tests. And again, Rails delivers. All Rails applications have testing support baked right in. As you add functionality to the code, Rails automatically creates test stubs for that functionality.

2 (2011-05-12) [x86_64-linux] [2011-07-23 10:38:18] INFO WEBrick::HTTPServer#start: pid=6044 port=3000 Which web server is run depends on what servers you have installed. WEBrick is a pure-Ruby web server that is distributed with Ruby itself and therefore is guaranteed to be available. However, if another web server is installed on your system (and Rails can find it), the rails server command may use it in preference to WEBrick. You can force Rails to use WEBrick by providing an option to the rails command: demo> rails server webrick As the last line of the startup tracing indicates, we just started a web server on port 3000.

Erb template works. Each time we access this page, the user will see the current time substituted into the body of the response. And for our trivial application, that might be good enough. In general, though, we probably want to do something slightly different. We’ll move the determination of the time to be displayed into the controller and leave the view with the simple job of displaying it.

* It is now <%= @time %>

When we refresh our browser window, we will again see the current time, showing that the communication between the controller and the view was successful.

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