Head First Rails > getting started > You create a new application with the rails command - Pg. 7: Safari Books Online

Table of Contents

Download Safari Books Online apps: Apple iOS | Android

Entire Site

Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.

This Book

Head First Rails

Head First Rails

Search

Contents

Table of Contents

Author of Head First Rails

how to use this book

Ch. 1. getting started

The application needs to do lots of things

So what things do we need for the app?

Rails is for database-centric apps like the ticket sales system

You create a new application with the rails command

Now you need to add your own code to the default app

Scaffolding is GENERATED code

There are no tables in the database yet!

Create the table by running a migration

Sweet! You saved your buddy's job!

To modify an app, you need to dig into the app's architecture

The 3 parts of your app: model, view, and controller

The 3 types of code are kept in SEPARATE folders

The files in the VIEW need to be edited

Edit the HTML in the view

The application need to store more information now

A migration is just a Ruby script

Rails can generate migrations

Give your migration a "smart" name, and Rails writes your code for you

You need to run your migration with rake

But changing the database isn't enough

Ch. 2. beyond scaffolding

Ch. 3. inserting, updating and deleting

Ch. 4. database finders

Ch. 5. validating your data

Ch. 6. making connections

Ch. 8. XML and multiple representations

Ch. 9. REST and Ajax

Ch. 10. real-world applications

URL

Help