By Michael Hartl

The Ruby on Rails educational e-book and screencast sequence educate you the way to increase and installation genuine, industrial-strength internet functions with Ruby on Rails, the open-source net framework that powers most sensible web pages similar to Twitter, Hulu, GitHub, and the Yellow Pages.

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Read Online or Download The Ruby on Rails Tutorial: Learn Web Development With Rails (3rd Edition) PDF

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Extra resources for The Ruby on Rails Tutorial: Learn Web Development With Rails (3rd Edition)

Example text

11 and determines where to send requests that come in from the browser. ) In particular, we want to change the default page, the root route, which determines the page that is served on the root URL. com/ (where nothing comes after the final forward slash), the root URL is often referred to as / (“slash”) for short. rb) includes a commented-out line that shows how to structure the root route. Here “welcome” is the controller name and “index” is the action within that controller. 10, which tells Rails to send the root route to the hello action in the Application controller.

4) has an application directory called app/ with three subdirectories: models, views, and controllers. 3. THE FIRST APPLICATION 31 enforces a separation between “domain logic” (also called “business logic”) from the input and presentation logic associated with a graphical user interface (GUI). In the case of web applications, the “domain logic” typically consists of data models for things like users, articles, and products, and the GUI is just a web page in a web browser. When interacting with a Rails application, a browser sends a request, which is received by a web server and passed on to a Rails controller, which is in charge of what to do next.

VERSION CONTROL WITH GIT 37 included so that you can use co in place of the more verbose checkout command. ) First-time repository setup Now we come to some steps that are necessary each time you create a new repository (sometimes called a repo for short). gitignore. 12 The added files are initially placed in a staging area, which contains pending changes to your project. 7. CHAPTER 1. " to unstage) new new new new new . . ) To tell Git you want to keep the changes, use the commit command: $ git commit -m "Initialize repository" [master (root-commit) df0a62f] Initialize repository .

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