Building Dynamic Web 2.0 Websites with Ruby on Rails by A P Rajshekhar

By A P Rajshekhar

Discover ways to create dynamic web pages with Ruby on Rails. This e-book is for someone who has uncomplicated recommendations of object-oriented programming in addition to relational databases and needs to enhance on-line functions utilizing Ruby on Rails. previous wisdom of Ruby or Rails isn't really anticipated.

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It gives the basic steps in writing and executing the program in a successful way. The 'Hello World' of RoR is going to do a simple task—the Controller will pass a string to the View and the View will format it and present it to the user. There are four steps: 1. Setting up the Application Structure 2. Adding the First Controller class 3. Implementing the Action Method 4. Adding the View Template Setting up the Application Structure Fire up the command prompt and give the following command: C:\>use_ruby It will drop you in the rails_app directory as shown below: Next, give the following command: C:\InstantRails\rails_apps>rails hello_world [ 45 ] Getting to Know Ruby and RoR You will see the following screen: That completes setting up the structure application.

Rb The result should be as shown below. Anything apart from the output shown means you will have to check the installation and configuration of Ruby. This test is more important in the case of an Instant Rails installation. The reason is that in the case of any manual installation, if Ruby does not work, then the RoR installation would not be successful. However, in the case of Instant Rails, everything comes as a bundle. If it succeeds, then Ruby supplied with the bundle is working fine. That completes the first part of 'Testing the Installation'.

Implementing the Action Method 4. Adding the View Template Setting up the Application Structure Fire up the command prompt and give the following command: C:\>use_ruby It will drop you in the rails_app directory as shown below: Next, give the following command: C:\InstantRails\rails_apps>rails hello_world [ 45 ] Getting to Know Ruby and RoR You will see the following screen: That completes setting up the structure application. If you change to the directory of hello_world you will see the following structure: [ 46 ] Chapter 2 The directory of our concern for the "Hello World" application is the app directory.

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