Download e-book for kindle: Agile Web Development with Rails 4 (Facets of Ruby) by Dave Thomas, David Heinemeier Hansson, Sam Ruby

By Dave Thomas, David Heinemeier Hansson, Sam Ruby

ISBN-10: 1937785564

ISBN-13: 9781937785567

Rails simply retains on altering. either Rails three and four, in addition to Ruby 1.9 and 2.0, carry hundreds of thousands of advancements, together with new APIs and mammoth functionality improvements. The fourth variation of this award-winning vintage has been reorganized and refocused so it's extra worthwhile than ever earlier than for builders new to Ruby and Rails.

Rails four introduces a few user-facing alterations, and the e-book has been up-to-date to compare the entire most modern alterations and new most sensible practices in Rails. This contains complete aid for Ruby 2.0, controller issues, Russian Doll caching, robust parameters, Turbolinks, new try out and bin listing layouts, and masses more.

Ruby on Rails is helping you produce top of the range, beautiful-looking net purposes quick. you think about growing the applying, and Rails looks after the details.

Tens of hundreds of thousands of builders have used this award-winning ebook to profit Rails. It's a vast, far-reaching educational and reference that's prompt by means of the Rails middle workforce. If you're new to Rails, you'll get step by step suggestions. If you're an skilled developer, this publication provides you with the great, insider info you need.

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 establishing a true software, and in-depth chapters examine the integrated Rails beneficial properties. This variation 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 how one can observe Rails proceed to alter, and this variation retains up. Examples use matters, Russian Doll caching, and Turbolinks, and the booklet focuses all through at the correct approach to use Rails. also, this version now works on Ruby 2.0, a brand new unencumber of Ruby with huge sensible and function improvements.

This version is for Rails4.0 and beyond.

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Using MVC was like constructing a skyscraper with the girders already in place—it was a lot easier to hang the rest of the pieces with a structure already there. During the development of our application, we will be making heavy use of Rails’ ability to generate scaffolding for our application. Ruby on Rails is an MVC framework, too. Rails enforces a structure for your application—you develop models, views, and controllers as separate chunks of functionality, and it knits them together as your program executes.

When an object receives a message, it looks into its own class for a corresponding method. add_line_item(next_purchase) submit_tag "Add to Cart" Parentheses are generally optional in method calls. In Rails applications, you’ll find that most method calls involved in larger expressions will have parentheses, while those that look more like commands or declarations tend not to have them. Methods have names, as do many other constructs in Ruby. Names in Ruby have special rules, rules that you may not have seen if you come to Ruby from another language.

Save end So, an ORM layer maps tables to classes, rows to objects, and columns to attributes of those objects. Class methods are used to perform table-level operations, and instance methods perform operations on the individual rows. In a typical ORM library, you supply configuration data to specify the mappings between entities in the database and entities in the program. Programmers using these ORM tools often find themselves creating and maintaining a boatload of XML configuration files. Active Record Active Record is the ORM layer supplied with Rails.

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Agile Web Development with Rails 4 (Facets of Ruby) by Dave Thomas, David Heinemeier Hansson, Sam Ruby

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