By Sam Ruby, Dave Thomas, David Heinemeier Hansson

Ruby on Rails is helping you produce high quality, beautiful-looking internet functions fast. you consider developing the applying, and Rails looks after the main points. Tens of millions of builders have used this award-winning booklet to profit Rails. it is a extensive, far-reaching educational and reference that is suggested by way of the Rails center workforce. in case you are new to Rails, you will get step by step suggestions. in case you are an skilled developer, this ebook provides you with the great, insider details you wish. Rails has advanced through the years, and this ebook has advanced in addition to it. We nonetheless begin with a step by step walkthrough of establishing a true software, and in-depth chapters examine the integrated Rails positive factors. This variation now supplies new Ruby and Rails clients additional info at the Ruby language and takes extra time to provide an explanation for key techniques all through. top practices on tips to practice Rails proceed to alter, and this variation retains up. Examples use cookie subsidized classes, HTTP authentication, and lively Record-based varieties, and the e-book focuses all through at the correct technique to use Rails. also, this version now displays Ruby 1.9, a brand new unencumber of Ruby with giant sensible and function advancements.

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It’s available in a download bundle with Ruby support or as a Ruby pack that can be downloaded later. 0, Rake targets, and database migrations, it supports a Rails code generator graphical wizard and quick navigation from a Rails action to its corresponding view. org/) is a fully featured editor with support for Ruby. It has extensive plug-in support. com/Products/Komodo/) is ActiveState’s IDE for dynamic languages, including Ruby. html) is a commercial IDE for Ruby, and is available for free to qualified educational and open source projects.

In addition, the Rails classes that wrap our database tables provide a set of class-level methods that perform table-level operations. For example, we might need to find the order with a particular id. This is implemented as a class method that returns the corresponding Order object. amount end Finally, the objects corresponding to individual rows in a table have methods that operate on that row. save end So, an ORM layer maps tables to classes, rows to objects, and columns to attributes of those objects.

By providing convenient defaults and by applying certain conventions on how a URL is constructed or in what file a controller definition is placed and what class name and method names are used, Rails applications are typically written using little or no external configuration—things just knit themselves together in a natural way. 3 Linking Pages Together It’s a rare web application that has just one page. ” application. Normally, each page in your application will correspond to a separate view.

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