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

By Dave Thomas, David Heinemeier Hansson, Sam Ruby

You are looking to write professional-grade purposes: Rails is a full-stack, open-source net framework, with built-in help for unit, practical, and integration trying out. It enforces stable layout rules, consistency of code throughout your workforce (and throughout your organization), and correct unencumber 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. want Ajax aid, so your net purposes are hugely interactive? Rails has it inbuilt. wish an software that sends and gets electronic mail? inbuilt. helps internationalization and localization? inbuilt. 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 ebook, you'll how to use ActiveRecord to attach enterprise items and database tables. not more painful object-relational mapping. simply create what you are promoting items and allow Rails do the remaining. have to create and regulate your schema? Migrations make it painless (and they're versioned, so that you can roll adjustments backward and forward). You'll use the motion Pack framework to course incoming requests and render pages utilizing easy-to-write templates and parts. See how one can take advantage of the Rails carrier frameworks to ship emails, enforce internet companies, and create dynamic, user-centric web-pages utilizing integrated Javascript and Ajax aid. there's large assurance of trying out, and the rewritten Deployment bankruptcy now covers Phusion Passenger.

As with the former variations of the publication, we commence with a longer educational that builds components of an internet shop. And, after all, the applying has been rewritten to teach the easiest of Rails V2.

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

Sample text

0 printing, March 2009) 42 R AILS AND ISP S a proxy setup for Mongrel. com/rails/pages/RailsWebHosts on the Rails wiki lists some Rails-friendly ISPs. Now that we have Rails installed, let’s use it. On to the next chapter. 0 printing, March 2009) 43 Chapter 4 Instant Gratification Let’s write a simple application to verify we’ve got Rails snugly installed on our machines. Along the way, we’ll get a peek at the way Rails applications work. 1 Creating a New Application When you install the Rails framework, you also get a new command-line tool, rails, which is used to construct each new Rails application that you write.

That directory will contain the template files for the controller’s views. In our case, we created a controller named say, so the views will be in the directory app/views/say. ” application, let’s create a template. By default, Rails looks for templates in a file with the same name as the action it’s handling. erb7 in the directory app/views/say. erb? erb, and refresh your browser window. You should see it display our friendly greeting. Notice that we didn’t have to restart the application to see the update.

H1>

It was nice having you here.

Fire up our trusty browser again, but this time point to our new view using the URL http://localhost:3000/say/goodbye. You should see something like this: Now we need to link the two screens. We’ll put a link on the hello screen that takes us to the goodbye screen, and vice versa. In a real application, we might want to make these proper buttons, but for now we’ll just use hyperlinks. We already know that Rails uses a convention to parse the URL into a target controller and an action within that controller.

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