By Justin Gehtland, James Duncan Davidson, Dave Thomas, David Heinemeier Hansson, Leon Breedt, Mike Clark, Andreas Schwarz
The definitive, Jolt-award successful consultant to studying and utilizing Rails is now in its moment variation. Rails is a brand new method of web-based program improvement that permits builders to create full-featured, subtle web-based purposes utilizing much less code and no more attempt. Now programmers can get the task performed correct and nonetheless go away paintings on time.
NEW within the moment variation: The booklet has been up-to-date to use the entire new Rails 1.2 positive aspects. The pattern software makes use of migrations, Ajax, contains a leisure interface, and illustrates new Rails beneficial properties. There are new chapters on migrations, energetic aid, lively checklist, and motion controller (including the hot resources-based routing). the internet 2.0 and Deployment chapters were thoroughly rewritten to mirror the newest considering. you can now study which environments are top in your sort software, and spot how Capistrano makes coping with your web site basic. the entire final chapters were widely up-to-date. ultimately, thousands of reviews from readers of the 1st variation were integrated, making this publication easily the easiest on hand.
Rails is a full-stack, open resource internet framework that permits you to create full-featured, refined web-based purposes with a twist...you can create a whole Rails program utilizing much less code than the setup XML you'd want simply to configure another frameworks.
You'll see how effortless it really is to installation Rails. You'll be writing purposes that paintings together with your favourite database (MySQL, Oracle, Postgres, and extra) very quickly in any respect.
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Extra info for Agile Web Development with Rails (2nd Edition)
It’s worth spending a little while getting familiar with the command line on your operating system. 5 Version Control I keep all my work in a version control system (currently Subversion). I make a point of checking a new Rails project into Subversion when I create it and commiting changes once I’ve got passing tests. I normally commit to the repository many times an hour. If you’re working on a Rails project with other people, consider setting up a continuous integration (CI) system. When anyone checks in changes, the CI system will check out a fresh copy of the application and run all the tests.
By providing convenient defaults and by applying certain conventions, Rails applications are typically written using little or no external configuration—things just knit themselves together in a natural way. 3 Linking Pages Together It’s a rare web application that has just one page. Let’s see how we can add another stunning example of web design to our Hello, World! application. Normally, each style of page in your application will correspond to a separate view. In our case, we’ll also use a new action method to handle the page (although that isn’t always the case, as we’ll see later in the book).
Rb. Let’s have a look at it. rb class SayController < ApplicationController end Pretty minimal, eh? SayController is an empty class that inherits from ApplicationController, so it automatically gets all the default controller behavior. Let’s spice it up. We need to add some code to have our controller handle the incoming request. What does this code have to do? For now, it’ll do nothing—we simply need an empty action method. So the next question is, what should this method be called? And to answer this question, we need to look at the way Rails handles requests.