Welcome to Ruby On Railsa Course by @AlSayedGamal

Rails 101Day 1

AgendaAbout me, you and this course.

What, how and why rails ?

How to get it installed using (RVM).

Same page

git crash course

ruby crash course

Scaffolding

Assignment 01

About me

@AlSayedGamal

slideshare.net/egamal

github.com/alsayedgamal

have been in development field for almost 9 years.

My main daily work is in rails, python, odoo and OpenStack.

About youName

Job (if any)

Technical Background

On scale from 0 -> 10 how do you rate yourself in

Linux ?

git ?

ruby ?

rails ?

About this course

It assumes some background.

It can be called “Rails as in professional environment”.

It requires a lot of hands-on

Dedicate enough time off-class ~5 hours / week.

your github will be involved.

What’s rails ?

ruby web framework 2005->present.

@DHH, 37Signals

MVC

Rapid application development (Agility).

What’s rails ? (cont.)

Early and continuous delivery1 feature a time.

DRY

80/20

Testing from day 1

Collaboration is key

What’s rails ? (cont.)

A ruby gem.

Depends on collection of Loosely coupled gems.

actionmailer

actionpack

actionview

activejob

activemodel

activerecord

activesupport

How to get started with rails ?

ROR is constantly changing.

ruby shipped with your OS vs RVM.

Gemset and isolation of projects.

.rvmrc

Your first rails project.

Follow this tutorial

rvm info

rvm gemset create

project/.rvmrc

Same Page

In this section we will assert some ruby and git knowledge.

This is not detailed section and it will require extra effort from you.

Ruby Crash Course

Language nature

Basic Syntax

Truly OOP Language

Blocks

Mixins

Ruby Crash Course Cont.

irb

Expression = Operand + Operators

Data types (all are objects)

5.times {puts “*”}

Operators are functions which are also objects

puts 5.+(5)

git crash course

Please, refer to this presentation

Scaffolding

Usually we rarely use scaffold in real application.

However It’s nice to try it to understand how basic rails app work.

Scaffolding cont.

rails generate scaffold <model> <fields>

Post title: string content: text

rake db:migrate

database.yml

routing:

rake routes

routes.rb

Assignment 01

Normal Scaffold

Minor Modification of Gemfile

Minor modification of views and controller.

Thank you!*

*Slides to be posted on slideshare.net/egamal