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Dasun Hegoda

Software Engineer

About Me

Dasun Hegoda

Joomla Experience : 3 Years

I'm Gonna Talk About

Few Interesting Facts About Joomla

CMS, Examples, Comparison

Introduction To Joomla

Joomla Features

Latest & Greatest Joomla 3.2 & It's New Features

Joomla Versions

Joomla Extensions

I'm Gonna Talk About

Joomla Architecture & Execution Flow

Joomla Performance

Joomla Myths

Joomla Pros & Cons

Joomla Vulnerabilities & How To Fix

Where To Start

Why Study Joomla

Governments are using Joomla joomlagov.info/

Nearly 7400 extensions for Joomla! - extensions.joomla.org/

Joomla.org exceeds 2 TB of traffic per month

Over 210k active registered users on the Official Joomla community forum

Why Study Joomla

Google and Yahoo have estimated the number of websites using Joomla to be around 30 million.

Over 35 million downloads of Joomla

In the last six months(September 2012 February 2013)Joomla 3.0: 796,340 (about 133k per month)

Joomla 2.5: 1,725,268 (about 288k per month)

Let's Start!!!

What's a CMS

A content management system (CMS) is a computer program that allows publishing, editing and modifying content.

CMSs are often used to run websites containing blogs, news, and shopping.

CMSs typically aim to avoid the need for hand coding.

CMS Examples

Let's see which one is the most popular

Let Me Explain

Drupal is a full-fledged, enterprise grade CMS. Its recommended for large projects where stability, scalability and power are prioritized over ease of use and aesthetics.

Joomla is a good option for small to enterprise grade CMS.

WordPress is often called a mini CMS. It isnt nearly as powerful or capable as Drupal or Joomla, easy to use blogging solution that looks good and can accommodate multiple authors easily.

Stop! Think-A-Min

Drupal - Steep Learning Curve, Lack of Free Plugins, Very Heavy, Big Cost

WordPress Security, Limited Design Option, Limited Content Management Capabilities, Less Flexible

Joomla is perfect in every angle.

Introduction To Joomla

Joomla is a free and open-source content management framework for publishing web content. It is built on a modelviewcontroller web application framework.

Joomla is written in PHP, uses object-oriented programming (OOP) techniques and software design patterns, stores data in a MySQL, MS SQL or PostgreSQL database.

Introduction To Joomla Cont

Mambo and Joomla are similar because they originated together, and then split into two communities and code bases in late 2005 when Joomla forked off from Mambo and they seperated. Because of the fact that Mambo is older, it's code base is clunkier and more cluttered.

www.mamboserver.com

If A Picture Is Worth A Thousand Words, How Many Words Is A Movie Worth?

So Who's Using Joomla?

Harvard University Gsas.hardvard.edu

Crime Agency(U.K. Gov) - nationalcrimeagency.gov.uk

Linux Linux.com

Epson erd.erdvdc.com

MTV Greece Mtvgreece.gr

Yahama mx.yamaha.com

ICTA icta.lk

and Many More

Why Joomla?

Features

Content Management

Template Management

User Management

Media Manager

Language Manager

Banner Management

Contact Management

Menu Manager

Features Cont

Integrated Help System

System Features

Web Services

Syndication and Newsfeed Management

Web Link Management

Search

Polls

Powerful Extensibility

Secret Features

Joomla Debugging

Offline Mode Maintenance

Multi Database Support

WYSIWYG Editor Customization

Why Joomla 3 Is Sooooo Special ?

What I Think About Joomla 3

New Libraries

Improved UI Responsive, Simple Admin

Extra Functions

Security - Two Factor Authentication, Bcrypt

Debug- SQL Explain, Profile & Call Stack

RAD Minimal Code

Content Version Control

UX Improvement

Two Factor Authentication

Content Version Control

SQL Explain

Profile

See it yourself

http://community.joomla.org/blogs/community/1777-joomla-32-video-tutorials.html

If A Picture Is Worth A Thousand Words, How Many Words Is A Movie Worth?

Let's See What Officials Say

Joomla Versions

LTS(2 Years) VS STS

1.0 in 2005-September

1.5(LTS), 1.6, 1.7, 2.5(LTS), 3.0, 3.1

3.2 Now

3.5 (LTS) 2014-March

docs.joomla.org/Joomla_3.0_FAQ#I.27m_building_a_brand_new_site._Should_I_launch_a_Joomla.21_2.5_site_or_a_3.0_site.3F

Past Releases

Future Releases

If A Picture Is Worth A Thousand Words, How Many Words Is A Movie Worth?

Joomla Extension

Basic Parts(Extension types)

Components

Modules

Plugins

Templates

Components

Components are the largest and most complex extensions of them all, They can be seen as mini-applications. Most components have two parts: a site part and an administrator part. Every time a Joomla page loads, one component is called to render the main page body.

Content (com_content), Banners (com_banners), Contact (com_contact), News Feeds (com_newsfeeds) and Web Links (com_weblinks)

Modules

Modules are more lightweight and flexible extensions used for page rendering. These modules are mostly known as the boxes that are arranged around a component.

Banners (mod_banners), Menus (mod_menu), Who's Online (mod_whosonline)

Plugins

Plugins are more advanced extensions and are in essence event handlers. In the execution of any part of Joomla, be it the core, a module or a component, an event can be triggered. When an event is triggered, plugins that are registered with the application to handle that event execute.

Content - Load Modules, Editor - TinyMCE

Template

A template is basically the design of your Joomla! powered website. With a template you can change the look and feel of your website. Templates have certain fields in which the component (just one) and modules (as many as you like) will be shown. Templates are easy to build or customize and they provide maximum flexibility in how you style your site.

Template Examples

CMS Architecture

CMS Architecture

Extensions layer, consists of Extensions(Components, Templates, Modules)

Application layer, consists of applications that extend the Framework JApplication class. Jinstallation, Jadministrator, Jsite, XML-RPC.

Framework layer, consists of the Joomla! Framework, Libraries that are required by the Framework or are installed for use by third-party developers. Plugins extend the functionality available in the Framework.

Joomla Folder Structure

Joomla Folder Structure

root: Once installed Joomla, this index.php page will detect your settings in the configuration.php file and execute your main Joomla engine.

administrator: In this directory you find all files for your Joomla administrator web interface (components, templates, modules, plugins, etc).

cache: This folder holds Joomla cache files. To accelerate performance

components: This directory holds all Joomla components

images: This folder by default holds images used for your extensions

Joomla Folder Structure Cont

language: This folder holds all language files. Joomla stores translations in a simple INI-based file format.

libraries: this directory holds your entire Joomla system and third-party libraries used in your website. A Joomla website uses the core libraries contained inside the \libraries folder.

logs: Where Joomla stores its log files.

media: Default folder to store media files. It may contains files related with user interfaces, such as: JavaScript libraries, flash files, etc.

modules: This folder contains all installed front-end modules. It holds the modules available for display by a template.

Joomla Folder Structure Cont

includes: In this directory you find core files of Joomla

installation: This folder contains needed files for Joomla installation. It should be deleted after installed Joomla.

plugins: It contains all your plugins files. As well as components and modules, plugins are a type of add-on extension.

templates: This directory has all your frontend template files.

tmp: This folder stores temporary files and cookies that are used by the administrator and user interface of Joomla. Most of time, extensions files are copied to this folder during Joomla installation process.

Execution Flow

Execution Flow Cont

Load once: defines.php

Load once: framework.php

Profile mark: afterLoad

Call to Jfactory::getApplication('site')

Call to Jsite::initialise

JpluginHelper::importPlugin('system')

Profile mark: afterInitialise

Trigger events: onAfterInitialise

Execution Flow Cont

Route the URI: Call to JSite::route

Profile mark: afterRoute

Trigger events: onAfterRoute

Dispatch the component: Call to JSite::dispatch

Profile mark: afterDispatch

Trigger events: onAfterDispatch

Execution Flow Cont

Render the page: Call to JSite::render

Profile mark: afterRender

Trigger events: onAfterRender

Echo output: Call to Jresponse::toString

Render the page: Call to JSite::render

Profile mark: afterRender

Trigger events: onAfterRender

Echo output: Call to JResponse::toString

Joomla Performance

Template Optimization

All Components Are Not Good Components

Enable Caching

Find The Bad Queries

Optimize Your Database(Schema, Indexing)

Follow Best Practices(OOP, Design Patterns)

Use Joomla Debugging

Joomla Myths

Joomla Myths

Joomla is only for small sites

Legacy mode is bad for your site

Joomla has insufficient SEO

Joomla is for end users, not developers

Template will be mobile ready

A Silver bullet - will make my life easier

Joomla cant compete with commercial tools.

Joomla Pros

Joomla Pros

Free & Open Source

Full Fledged CMS

Power, Robust & Well Tested

Extensions Components, Modules, Plugins, Themes

Small Learning Curve

Future Proof Content Responsive Design, jQuery

Joomla Pros Cont

Scheduled Content

Social Media Integration

Multiple User Collaboration

Easy To Manage

Community Support

Security

Multi-Lingual Support

Joomla Cons

Joomla Cons

Limited Flexibility

Migration Joomla 1.5 Joomla 3.2

Security Open Code

Extension Compatibility

Limited ACL Support is being fixed

Unnecessary Extensions

Joomla(CMS) Need To Be Upgraded

Vulnerabilities

A weakness which allows an attacker to reduce a system's information assurance

Different versions have different issues & most of them are solved.

Vulnerability could exist due to an extension.

docs.joomla.org/Vulnerable_Extensions_List

Report : vel.joomla.org

How To Fix

How To Fix

Use The Latest Joomla Security Update

Keep Extensions Updated

Applied Server Level Security

Follow Best Practices In Coding

Delete The Joomla Templates That You Do Not Use

Write-Protected Your Joomla Configuration File

Where To Start???

Where To Start

docs.joomla.org

developer.joomla.org

hiddenjoomlasecrets.com

Youtube

Google

Autor: 17.03.14