By Dave Thomas, David Heinemeier Hansson, Sam Ruby
Ruby on Rails is helping you produce high quality, beautiful-looking internet functions speedy. you consider growing the appliance, and Rails looks after the details.
Tens of millions of builders have used this award-winning publication to profit Rails. It's a wide, far-reaching instructional and reference that's suggested by way of the Rails center workforce. If you're new to Rails, you'll get step by step advice. If you're an skilled developer, this publication offers you the excellent, insider info you need.
Rails has advanced through the years, and this publication has advanced besides it. We nonetheless begin with a step by step walkthrough of establishing a true program, and in-depth chapters examine the integrated Rails gains. This version now supplies new Ruby and Rails clients additional info at the Ruby language and takes extra time to give an explanation for key options all through. top practices on how one can practice Rails proceed to alter, and this variation retains up. Examples use cookie subsidized classes, HTTP authentication, and lively Record-based kinds, and the publication focuses all through at the correct strategy to use Rails. also, this version now displays Ruby 1.9, a brand new liberate of Ruby with sizeable practical and function improvements.
Read Online or Download Agile Web Development with Rails (4th edition) PDF
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Additional resources for Agile Web Development with Rails (4th edition)
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. Runs on Windows, Mac OSX, and Linux. Ask experienced developers who use your kind of operating system which editor they use. Spend a week or so trying alternatives before settling in. The Desktop We’re not going to tell you how to organize your desktop while working with Rails, but we will describe what we do.
In our example, we’ll be creating our projects in a directory called work. In that directory, use the rails command to create an application called demo. Be slightly careful here—if you have an existing directory called demo, you will be asked whether you want to overwrite any existing files. gitkeep The command has created a directory named demo. Pop down into that directory, and list its contents (using ls on a Unix box or dir under Windows). ru config/ db/ doc/ Gemfile lib/ log/ public/ Rakefile README script/ test/ tmp/ vendor/ All these directories (and the files they contain) can be intimidating to start with, but we can ignore most of them for now.
In the single-quoted case, Ruby does very little. With a few exceptions, what you type into the single-quoted string literal becomes the string’s value. 0 printing, October 28, 2010) 59 D ATA T YPES In the double-quoted case, Ruby does more work. First, it looks for substitutions—sequences that start with a backslash character—and replaces them with some binary value. The most common of these is \n, which is replaced with a newline character. When you write a string containing a newline to the console, the \n forces a line break.