Learning Rails

* * splash@dei.uc.pt 31 March 2011

Chapter 0

def what is rails? A web framework end

Rails was created in 2003by David Heinemeier Hansson

Who is already on Rails?

Let’s try it out!

Chapter 1

Basic concepts of Rails§  Support for§  Follows the pattern §  Follows the architectural pattern §  Supports

Rails directory structure

Rails directory structure Application code, structured following the MVC design

Rails directory structure Application configuration

Rails directory structure Files to manipulate the database

Rails directory structure Documentation for the app

Rails directory structure Static files accessible to the public

Rails directory structure Application tests

Rails directory structure Third-party Plugins

Bundler next step Use Bundler to include and install the gems needed

Bundler

Chapter 2

Building a simple app Key id integer value string state string

Building a simple app

Building a simple app§  We now need to§  This with our new data model

Building a simple app§  Let’s delete the default static page

Building a simple app§  Run the server!

Building a simple app§  Root page

Building a simple app§  Index action

Building a simple app§  New action

Building a simple app§  Show action

Building a simple app§  Edit action

Building a simple app§  Destroy

Building a simple app table from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  Correspondence between pages and URLs

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails The browser issues a request for the URL

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in RailsRails routesto the indexaction in the

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails the !

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails The index action asks the Key model to retrieve all keys ( )

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails The Key model pulls all the keys from the database

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails The Key model returns the list of keys to the controller

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in RailsThe controller capturesthe keys in the @keysvariable, which is passedto the

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in RailsThe controller capturesthe keys in the @usersvariable, which is passedto the

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails The view uses embedded Ruby to render the page as HTML

Building a simple app diagram from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  MVC in Rails The controller passes the HTML back to the browser

Building a simple app§  Where are deﬁned the routes?

Building a simple app§  Which are the default actions?

Building a simple app table from “Ruby on Rails Tutorial: Learn Rails by Example” available at http://ruby.railstutorial.org/§  RESTful routes

image downloaded from http://wallpaperof.net/retro/

Chapter 4

Simple validations

Simple validations I shouldn’t be able to create a key without or

Simple validations V alue should be unique

Simple validations

Form helpers & builders

Form helpers & builders§  Let’s try a Form Builder DSL

Form helpers & builders§  Let’s try a Form Builder DSL - Features

Form helpers & builders§  Let’s try a Form Builder DSL - Installation

Form helpers & builders§  Let’s try it out!

Alternate markup languages

Alternate markup languages§  Why do views tend to become more and more complex?

Alternate markup languages HTML

Alternate markup languages

Root path

image downloaded from http://wallpaperof.net/retro/

Chapter 5

Adding tournaments

Adding tournaments Tournament has many Key key_id integer name string start_date string end_date string

Adding tournaments

Adding value range to states

Internationalization & localization image downloaded from http://wallpaperof.net/retro/

Internationalization & localization

Route translation

Chapter 6

Web-app-theme

Chapter 7

Create a button on the keys’ indexpage to generate 100 random keys

Create a button on the keys’ index page to generate 100 random keys hints

Create a button on the keys’ indexpage to generate 100 random keys

The end

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* * splash@dei.uc.pt 31 March 2011

Learning Rails

by David Francisco on Apr 25, 2011

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Learning Rails — Presentation Transcript