Download Agile Web Development with Rails (4th edition) Beta 13 by Sam Ruby, Dave Thomas, David Heinemeier Hansson PDF

By Sam Ruby, Dave Thomas, David Heinemeier Hansson

ISBN-10: 1934356549

ISBN-13: 9781934356548

Ruby on Rails is helping you produce high quality, beautiful-looking internet purposes quick. you think about growing the applying, and Rails looks after the main points. Tens of hundreds of thousands of builders have used this award-winning booklet to benefit Rails. it is a wide, far-reaching educational and reference that is urged through the Rails center workforce. if you are new to Rails, you will get step by step information. if you are an skilled developer, this booklet provides you with the excellent, insider info you would like. Rails has developed through the years, and this publication has developed besides it. We nonetheless begin with a step by step walkthrough of establishing a true software, and in-depth chapters examine the integrated Rails positive aspects. This variation now offers new Ruby and Rails clients additional information at the Ruby language and takes extra time to provide an explanation for key innovations all through. most sensible practices on easy methods to observe Rails proceed to alter, and this version retains up. Examples use cookie sponsored classes, HTTP authentication, and lively Record-based varieties, and the ebook focuses all through at the correct solution to use Rails. also, this version now displays Ruby 1.9, a brand new free up of Ruby with gigantic useful and function advancements.

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Additional info for Agile Web Development with Rails (4th edition) Beta 13 (2011)

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The MVC architecture was originally intended for conventional GUI applications, where developers found the separation of concerns led to far less coupling, which in turn made the code easier to write and maintain. Each concept or action was expressed in just one well-known place. Using MVC was like constructing a skyscraper with the girders already in place—it was a lot easier to hang the rest of the pieces with a structure already there. During the development of our application, we will be making heavy use of Rails’ ability to generate scaffolding for our application.

For all but SQLite 3, you’ll need to install a database driver, a library that Rails can use to connect to and use your database engine. This section contains links to instructions to get that done. The database drivers are all written in C and are primarily distributed in source form. If you don’t want to bother building a driver from source, take a careful look at the driver’s website. Many times you’ll find that the author also distributes binary versions. 0 printing, February 2, 2011) 36 W HAT W E J UST D ID If you can’t find a binary version or if you’d rather build from source anyway, you’ll need a development environment on your machine to build the library.

These files live in standard locations in the Rails hierarchy: controllers go into app/controllers, and views go into subdirectories of app/views. 3. Making It Dynamic So far, our Rails application is pretty boring—it just displays a static page. To make it more dynamic, let’s have it show the current time each time it displays the page. To do this, we need to make a change to the template file in the view—it now needs to include the time as a string. That raises two questions. First, how do we add dynamic content to a template?

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