By Dave Thomas, David Heinemeier Hansson, Sam Ruby
Ruby on Rails is helping you produce high quality, beautiful-looking net purposes fast. you consider developing the applying, and Rails looks after the details.
Tens of millions of builders have used this award-winning ebook to profit Rails. It's a large, far-reaching instructional and reference that's prompt by way of the Rails center group. If you're new to Rails, you'll get step by step suggestions. If you're an skilled developer, this booklet provide you with the great, insider info you need.
Rails has advanced through the years, and this ebook has advanced besides it. We nonetheless commence with a step by step walkthrough of establishing a true program, and in-depth chapters examine the integrated Rails gains. This version now provides new Ruby and Rails clients additional info at the Ruby language and takes extra time to give an explanation for key techniques all through. top practices on how one can observe Rails proceed to alter, and this version retains up. Examples use cookie subsidized periods, HTTP authentication, and lively Record-based varieties, and the ebook focuses all through at the correct strategy to use Rails. also, this variation now displays Ruby 1.9, a brand new unencumber of Ruby with sizeable useful and function improvements.
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Extra resources for Agile Web Development with Rails (4th edition)
Quite the contrary; Rails gives you the separation you need to write web applications with clearly demarcated code for control and presentation logic. View Support In Rails, the view is responsible for creating either all or part of a response to be displayed in a browser, processed by an application or sent as an email. At its simplest, a view is a chunk of HTML code that displays some fixed text. More typically you’ll want to include dynamic content created by the action method in the controller.
Because of these interactions, support for views and controllers in Rails is bundled into a single component, Action Pack. Don’t be fooled into thinking that your application’s view code and controller code will be jumbled up just because Action Pack is a single component. Quite the contrary; Rails gives you the separation you need to write web applications with clearly demarcated code for control and presentation logic. View Support In Rails, the view is responsible for creating either all or part of a response to be displayed in a browser, processed by an application or sent as an email.
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. Ruby Names Local variables, method parameters, and method names should all start with a lowercase letter or with an underscore: order, line_item, and xr2000 are all valid.
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