Agile Web Development with Rails (4th edition) Beta 13 by Sam Ruby, Dave Thomas, David Heinemeier Hansson

By Sam Ruby, Dave Thomas, David Heinemeier Hansson

Ruby on Rails is helping you produce top of the range, beautiful-looking net purposes quick. you consider developing the appliance, and Rails looks after the main points. Tens of hundreds of thousands of builders have used this award-winning e-book to benefit Rails. it is a wide, far-reaching educational and reference that is urged through the Rails middle crew. in case you are new to Rails, you will get step by step assistance. in case you are an skilled developer, this publication offers you the excellent, insider info you would like. Rails has developed through the years, and this e-book 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 good points. This variation now offers new Ruby and Rails clients additional info at the Ruby language and takes extra time to give an explanation for key options all through. top practices on how one can observe Rails proceed to alter, and this version retains up. Examples use cookie subsidized classes, HTTP authentication, and energetic Record-based types, and the e-book focuses all through at the correct approach to use Rails. also, this variation now displays Ruby 1.9, a brand new liberate of Ruby with monstrous sensible and function advancements.

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Extra info for Agile Web Development with Rails (4th edition) Beta 13 (2011)

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If MVC is simply a question of partitioning your code a particular way, you might be wondering why you need a framework such as Ruby on Rails. The answer is straightforward: Rails handles all of the low-level housekeeping for you—all those messy details that take so long to handle by yourself—and lets you concentrate on your application’s core functionality. Let’s see how. 2 Rails Model Support In general, we’ll want our web applications to keep their information in a relational database. Order-entry systems will store orders, line items, and customer details in database tables.

That’s all there is to an MVC web application. By following a set of conventions and partitioning your functionality appropriately, you’ll discover that your code becomes easier to work with and your application becomes easier to extend and maintain. Seems like a good trade. If MVC is simply a question of partitioning your code a particular way, you might be wondering why you need a framework such as Ruby on Rails. The answer is straightforward: Rails handles all of the low-level housekeeping for you—all those messy details that take so long to handle by yourself—and lets you concentrate on your application’s core functionality.

0 printing, February 2, 2011) 48 W HAT W E J UST D ID The say_goodbye_path is a precomputed value that Rails makes available to application views. It evaluates to the /say/goodbye path. Over time you will see that Rails provides the ability to name all the routes that you will be using in your application. 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.

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