By Sam Ruby, Dave Thomas, David Heinemeier Hansson
Ruby on Rails is helping you produce top of the range, beautiful-looking net functions fast. you think about growing the appliance, and Rails looks after the main points. Tens of millions of builders have used this award-winning ebook to benefit Rails. it is a wide, far-reaching educational and reference that is instructed via the Rails middle workforce. if you are new to Rails, you will get step by step counsel. in case you are an skilled developer, this ebook provide you with the great, insider details you would like. Rails has developed through the years, and this ebook has advanced 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 variation now provides new Ruby and Rails clients additional information at the Ruby language and takes extra time to provide an explanation for key innovations all through. top practices on the right way to practice Rails proceed to alter, and this variation retains up. Examples use cookie subsidized periods, HTTP authentication, and energetic Record-based varieties, and the booklet focuses all through at the correct option to use Rails. also, this version now displays Ruby 1.9, a brand new unencumber of Ruby with huge sensible and function advancements.
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Extra info for Agile Web Development with Rails (4th edition) Beta 13 (2011)
0 printing, February 2, 2011) 40 H ELLO , R AILS ! requests from a browser, decodes the request to find a controller, and calls an action method in that controller. The controller then invokes a particular view to display the results to the user. The good news is that Rails takes care of most of the internal plumbing that links all these actions. ” application, we need code for a controller and a view, and we need a route to connect the two. We don’t need code for a model, because we’re not dealing with any data.
Sam updated the chapter using Vim. But many think that neither Emacs nor Vim is ideal for Rails development and prefer to use TextMate. Although the choice of editor is a personal one, here are some suggestions of features to look for in a Rails editor: • Support for syntax highlighting of Ruby and HTML. erb files (a Rails file format that embeds Ruby snippets within HTML). • Support of automatic indentation and reindentation of Ruby source. This is more than an aesthetic feature: having an editor indent your program as you type is the best way of spotting bad nesting in your code.
To get this magic to work, Rails needs to find all the various components of your application. 1, Where Things Go, on page 264), this means we need to create a specific directory structure, slotting the code we write into the appropriate places. The rails command simply creates this directory structure for us and populates it with some standard Rails code. To create your first Rails application, pop open a shell window, and navigate to a place in your filesystem where you want to create your application’s directory structure.