By Sam Ruby, Dave Thomas, David Heinemeier Hansson
Ruby on Rails is helping you produce fine quality, beautiful-looking net functions speedy. you think about developing the applying, and Rails looks after the main points. Tens of hundreds of thousands of builders have used this award-winning publication to benefit Rails. it is a wide, far-reaching instructional and reference that is prompt by means of the Rails middle crew. in case you are new to Rails, you will get step by step suggestions. if you are an skilled developer, this booklet provide you with the great, insider details you wish. Rails has advanced through the years, and this ebook has developed besides it. We nonetheless begin with a step by step walkthrough of creating a true program, and in-depth chapters examine the integrated Rails good points. This version now offers new Ruby and Rails clients additional info at the Ruby language and takes extra time to provide an explanation for key recommendations all through. top practices on tips to follow Rails proceed to alter, and this version retains up. Examples use cookie sponsored periods, HTTP authentication, and energetic Record-based kinds, and the e-book focuses all through at the correct method to use Rails. also, this variation now displays Ruby 1.9, a brand new unencumber of Ruby with tremendous sensible and function advancements.
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Additional resources for Agile Web Development with Rails (Bata 10.0 2010.10.29)
See how the model is being used to keep track of all the business data? ) Now that the cart includes the new product, we can show it to the user. The controller invokes the view code, but before it does, it arranges things so that the view has access to the cart object from the model. In Rails, this invocation is often implicit; again, conventions help link a particular view with a given action. 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.
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. 0 printing, October 28, 2010) 55 A CTION P ACK : T HE V IEW AND C ONTROLLER In Rails, dynamic content is generated by templates, which come in three flavors.
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. 0 printing, October 28, 2010) H ELLO , R AILS ! 45
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.
Agile Web Development with Rails (Bata 10.0 2010.10.29) by Sam Ruby, Dave Thomas, David Heinemeier Hansson