Get Agile Web Development with Rails (3rd Edition) PDF

By Dave Thomas, David Heinemeier Hansson, Sam Ruby

ISBN-10: 1934356166

ISBN-13: 9781934356166

You are looking to write professional-grade purposes: Rails is a full-stack, open-source internet framework, with built-in aid for unit, sensible, and integration trying out. It enforces sturdy layout ideas, consistency of code throughout your crew (and throughout your organization), and correct free up administration.

yet Rails is greater than a suite of top practices. Rails makes it either enjoyable and straightforward to show out very cool net functions. desire Ajax aid, so your net functions are hugely interactive? Rails has it in-built. wish an software that sends and gets electronic mail? in-built. helps internationalization and localization? in-built. do you want purposes with a REST-based interface (so they could engage with different RESTful purposes with nearly no attempt in your part)? All integrated.

With this booklet, you'll the right way to use ActiveRecord to attach company gadgets and database tables. not more painful object-relational mapping. simply create your corporation items and permit Rails do the remaining. have to create and regulate your schema? Migrations make it painless (and they're versioned, so that you can roll alterations backward and forward). You'll tips on how to use the motion Pack framework to course incoming requests and render pages utilizing easy-to-write templates and elements. See the way to take advantage of the Rails carrier frameworks to ship emails, enforce internet prone, and create dynamic, user-centric web-pages utilizing integrated Javascript and Ajax help. there's large assurance of checking out, and the rewritten Deployment bankruptcy now covers Phusion Passenger.

As with the former versions of the booklet, we commence with a longer educational that builds elements of an internet shop. And, in fact, the applying has been rewritten to teach the easiest of Rails V2.

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Additional info for Agile Web Development with Rails (3rd Edition)

Sample text

We added an action to the controller, and we created a template to display a page in the browser. These files live in standard locations in the Rails hierarchy: controllers go into app/controllers, and views go into subdirectories of app/views. 4, on the following page. 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.

And that’s where the views come in. Remember when we ran the script to create the new controller? The command added 6. If instead you see a message to the effect of No route matches "/say/hello", try stopping and restarting your server, because something you have done caused Rails to cache your configuration information before the controller was created. 0 printing, March 2009) 49 H ELLO , R AILS ! three files and a new directory to our application. That directory will contain the template files for the controller’s views.

Then the controller (say) 3. 2: URLs are mapped to controllers and actions. However, the real situation is somewhat more complicated than that. com/. The web server that is hosting your application is fairly smart about paths. It knows that incoming requests to this URL must be talking to the application. Anything past this in the incoming URL will not change that—the same application will still be invoked. Any additional path information is passed to the application, which can use it for its own internal purposes.

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Agile Web Development with Rails (3rd Edition) by Dave Thomas, David Heinemeier Hansson, Sam Ruby

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