Magento 101
Getting Started with Magento Development
Who you are
Magento 101
Getting Started with Magento Development
Crash Course For PHP Developers
Mathew Beane
November 17th 2015
http://joind.in/link
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Mathew Beane
@aepod
Director of Systems Engineering - Robofirm
Zend Z-Team Volunteer – Magento Division
Family member – 3 Kids and a Wife
Magento Certified Developer
• Open-source PHP E-Commerce Market Leader
• Large community
• Full Featured E-Commerce Platform
• Incredibly Flexible
• Highly Structured
• Steep learning curve because of complexity
• Enterprise Edition offers support and more features
So its not a color, super villain
or an electrical generator?
Magento is an open-source content management
system for e-commerce web sites.
- Wikipedia
Image: Marvel Comics
What is Magento?
Todays tl;dr
The Magento application
Common toolsets for Magento developers
Quick start Magento development
• Brief overview
• Install guide
• Backend development
• Frontend development
About training & certification
Magento 2
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Magento 1
Community Edition (CE): 1.9.2.1
Enterprise Edition (EE): 1.14.2.0
Still primarily used on live sites.
Magento 2
2.0.0
Just Released, ready for use.
Full refactor, modern OO concepts.
Todays Magento
Community member John Knowles produced this amazing patch guide.
http://magento.com/security/news/which-security-
patches-should-i-update-my-version-magento
Scan for missing patches using the byte tool:
https://www.magereport.com/scan/
Over the last year there has been a serious uptick
in hacker activity aimed at Magento. Do not be
caught unaware, patch today.
Patch Today!
Magento Design Patterns
Selected Design Patterns
Model View Controller Pattern
Business logic happens in the models and the controller maps the model-data
to the views. The block system helps with rendering because Magento is heavy
on the Model/View side.
Front Controller Pattern
Magento uses an index.php which has a single point of entry Mage::app()
which initializes the environment and routes the request to the controller.
Factory Pattern
Heavily used by Magento, a good example is the getModel() function which
accesses models via aliases from the configuration XML.
Module Pattern
Magento relies on a very modular architecture, however a lot of functionality
breaks this due to heavy usage of the Mage core class throughout the
application.
More reading: http://magenticians.com/12-design-patterns-magento
Magento Core Code
Everything in the
Magento zip file or
installed by Magento
should be considered
core code.
Partial List of Core Files
• index.php
• app/code/core
• app/design/[adminhtml,frontend]/[base,default]
• js/jslib_installed_with_magento/
• lib/library_installed_with_magento/
• skin/[adminhtml,frontend]/[base,default]
For a complete list, download current Magento and look through the code.
How to Keep Core Clean
Source: https://joind.in/talk/view/16204
• Magento allows class overrides on nearly
everything.
• Magento’s Event/Observer mechanism is pre-
built into most business logic. You can add
more if you need.
• Designs/Templates have a fallback system that
allows you to utilize any of the core layouts and
templates, or replace them in your current
design.
• Untouched index.php. Outside of development
and very rare implementations you should not
“need” to edit this.
Core Changes That Are OK!
• Patches: Magento releases patches that are not
controlled via composer or version number.
• Updating Shared Libraries: For instance CM_Redis, or a
payment gateway that are included with core Magento.
On your local Copy:
Careful not to commit any changes from core, employ a .gitignore strategy.
• Changing core to learn about Magento is OK
• Changing core to debug is OK.
Magento Core Directory Overview
Path Usage
/app/ Where most of the PHP resides
/js/ External Javascript library. Typically only used by
extensions that are including common assets.
/lib/ “External code library” With lots of core code, this can
also contain 3rd party frameworks and other goodies.
/skin/ CSS, Images and Javascript
/var/ Contains logs, reports, session files and a variety of
other goodies.
Path Usage
/app/code/community Downloaded modules built by Magento 3rd
party developers.
/app/code/core/ Core modules, out of the box Magento, do
not touch.
/app/code/local/ Modules built for the specific
application/store.
Path Usage
/app/etc/local.xml Master configuration file for Magento, contains
database, cache and other settings.
/app/etc/config.xml Default settings, with some directory locations.
Usually this is not touched.
app/etc/modules/ Modules loading configuration files.
/ - Directory Root /app/code/
/app/etc/
Magento Core Design Directories
Path Usage
/app/design/frontend/base/ Default Templates, falls back from any package.
/app/design/frontend/default/ Old pre-rwd base theme default package.
/app/design/frontend/rwd/ RWD is a responsive template package.
Path Usage
/skin/frontend/default/default/css Default theme CSS files
/skin/frontend/default/default/images Default theme image files.
/skin/frontend/default/default/js Default theme javascript files
/app/design/frontend
/skin/frontend/
Magento Core Designs Pattern
Frontend design directories fall into this pattern:
app/design/<area>/<package>/<theme>/[css,images,js]
skin/<area>/<package>/<theme>/[css,images,js]
• Area: Typically frontend or adminhtml.
• Package / Theme: Accommodates Magento’s theme fallback logic.
Package and Theme Fallback Logic
Graph from: http://blog.belvg.com/magento-fallback-configuration-default-and-specific-themes-packages-design-exceptions-temporary-theme-configuration.html
Package: custom_package
Theme: custom_theme
Never edit base/default, or default/default. These should be
considered core code. (Extensions also install in here)
When creating a new design use the override system creating a
custom_package and custom_theme.
Magento Configuration Structure
• XML Based
• xpaths are used as keys in core_config_data table in mysql
• Hierarchical with overrides and scope
• In the app you can call any final config value using the xpath
• Used for configuration values (cached via Configuration Cache)
• Also used for layout rules (cached via Layout Cache)
Magento Configuration Scope
• Global Scope
• Default Values
• Used if not found in scope
• Website Scope
• Website scope is used to override global scope
per website.
• Used to support Multi-Store environments
• View Scope (subset of website scope)
• Used for currency, tax, and language settings
• Typically shown as a dropdown for
Language/Currency
• Limited Configuration Values Available
Magento Admin – Choosing Configuration Scope
Magento Database Interface
Magento uses a basic CRUD Model
There are three basic components to the data
interface
Model: Doesn’t contain database code
Resource Model: Read/Write adapters for communicating
to database
Collection: PHP Object used to hold model instances,
implements several PHP Standard Library interfaces to
work with the collection.
“Most Magento Models can be categorized in one of two ways. There's a basic,
ActiveRecord-like/one-object-one-table Model, and there's also an Entity Attribute
Value (EAV) Model.“
- http://devdocs.magento.com/guides/m1x/magefordev/mage-for-dev-5.html
Magento’s CRUD Resource Model:
Mage_Core_Model_Abstract
• Create & Update: save()
• Read: load()
• Delete: delete()
Magento Database Structure
• Most of the tables are InnoDB
• Several Hundred Tables
• The DB can grow very large due to logging, carts,
and other data
• Typically not edited by hand in any way at any time.
Selected Tablespace Areas:
core_ : Many of the core system settings tables
reside here.
catalog_ : Stores products, categories, associations,
and other data.
customer_ : Stores the customer information
sales_ : Quotes, invoices and orders, and related data
Image Source: https://wiki.smu.edu.sg/is480/2012T2_Team_Chm%3A_Project_Design
Magento 101 – Mathew Beane – php[world] 2015
Magento Common Toolsets
Overview & Best Practices
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Magento Development IDE Choices
PHPStorm with Magicento Plugin
PHPStorm with the Magicento is also very popular.
https://www.jetbrains.com/phpstorm/
http://magicento.com/
Zend Studio
Built in support for Magento, built on eclipse and a
very nice platform for editing Magento.
http://www.zend.com/en/products/studio
Magento Server Stack Tools
• Magento does well on the Zend Server platform. Zend provides great PHP support. It has Z-
Ray, tools for deployment, monitoring and other features which make it very nice in
production.
• Newrelic: Magento even has an official plugin to send data to newrelic. http://newrelic.com/robofirm
• blackfire.io : Used for tracing code, like newrelic + xhprof.
• Z-Ray: Standalone works very well with the Magento plugin, add to apache/nginx stack.
Z-Ray and the Magento Plugin
• Full Database Queries
• Debug Production & Mobile Devices with
Z-Ray Live
• Fully Extensible – Framework Support
• All Function calls – with details
• Errors and Warnings
• Magento Plugin Provides:
• Detailed Overview
• Events / Observers
• Layouts / Blocks
• Logs / Modules
• Details, details… details!
Magento Application Stack Tools
N98-magerun:
https://github.com/netz98/n98-magerun
A must have CLI tool, the swiss army knife for Magento
Developers.
Alan Storm’s Commerce Bug:
http://store.pulsestorm.net/products/commerce-bug-2
This thing is amazing, best $50 I ever spent on Magento.
N98-magerun in action.
Don’t miss Alan Storms Blog:
http://alanstorm.com/
Magento 101 – Mathew Beane – php[world] 2015
Magento Quick Start
Getting Started With Magento Development
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Magento Quick Start - Itinerary
• Installation: Manual and automated
methods. Revision control and workflow.
• Development: The basic parts of an
extension.
• Theming and Designs: Frontend
development for Magento.
MTG Card c/o Wizards of the Coast
Magento Quick Start – “The App”
Designs
Layouts: XML Configurations
Templates: PHTML templates
Static Files: CSS, JS and Images
Extensions
Blocks: Template Business Logic
Controllers: Request Routing
Helpers: General Functions
Models: Data and Database Interface
Magento Extension Developers Guide
Figure 3: MVC design pattern for Magento
Magento System Requirements
Operating System
Linux x86-64
Web Server
Apache 2.x
Nginx 1.7.x
Database
MySQL 5.6 (Oracle or Percona)
PHP
PHP 5.4 – 5.5
• Optional Services
Redis
Memcache
Apache SOLR
• Required PHP Extensions
CURL
DOM
gd
hash
Iconv
mcrypt
pcre
pdo
pdo_mysql
simplexml
Magento Manual Installation
Installing Magento from scratch is really only a couple basic steps.
1.Create database, database user and proper grants.
2.Copy source files into the webroot.
(Optional) Add sample data to database, and media to webroot/media
3.Set and confirm permissions on all files for webserver.
4.Point web browser at your webroot.
5.Step through the installer.
6.Do any post install tasks, because your done.
http://devdocs.magento.com/guides/m1x/install/installing_install.html
Magento Automated Installation
• https://github.com/rjbaker/simple-magento-vagrant
Name says it all, no puppet or chef. Virtualbox + Vagrant. Magento 1.9.1.0 with
sample data. A little stale.
• https://github.com/mike182uk/magento-dev-vagrant-chef-solo
A more active and configurable vagrant install. Virtualbox, Vagrant and Chef.
Magento 1.9.2.1 with sample data.
• https://hub.docker.com/r/alexcheng/magento/
Ready to go docker container, you will have to do a little configuration to make this
one work. Magento 1.9.1.0, no sample data.
Magento Loves Composer
https://github.com/Cotya/magento-composer-installer
Manage all your extensions, designs, and other stuff via composer.
https://github.com/AydinHassan/magento-core-composer-installer
Manage core install with this community package. It makes it easy to update your core if
you require it using composer.
http://packages.firegento.com/
A community repository of a lot of the common extensions that are used by a lot of
Magento developers.
Keeping Magento Clean Using Git
• git is really required for managing a Magento installation.
• Use symbolic links and .gitignore for volatile directories and sensitive files.
• When used with composer gitignore will require a more complex strategy.
• Checkout Fabrizo Branca’s presentations on this for a very in depth study:
http://www.slideshare.net/aoepeople/rock-solid-magento
http://www.slideshare.net/aoepeople/2014-04-magento-meetup-composer
http://www.slideshare.net/aoepeople/continuous-development-and-deployment-workflows-and-patterns
• Sonassi hass another great guide:
https://www.sonassi.com/knowledge-base/our-magento-git-guide-and-work-flow/
Magento Extension Structure
Extension / Module Code
Configuration: Module configuration and status values
Blocks: Classes for interfacing with phtml templates
Controllers: Classes that handle request routing
Helpers: General functions and helpers
Models: Resource Models and Collections for DB
Installers/Upgrades: Install, upgrade and even remove extension data
Magento Extensions - Configuration
Module Status
/app/etc/modules/demo_example.xml
<?xml version="1.0"?>
<config>
<modules>
<Demo_Example>
<active>true</active>
<codePool>community</codePool>
</Demo_Example>
</modules>
</config>
Module Config
/app/code/community/Demo/Example/etc/config.xml
• Merged into with the rest of the configuration
• Defines all models, blocks and classes for the module
• Similar to the app/etc/local.xml or data in the
core_config_data table
• Controls installation and updates of module data
Magento Extensions - Designs
• Configuration Files: /app/etc/modules/demo_example.xml
Definitions for Blocks, Layouts and Assets should be declared here.
• Blocks: app/etc/code/community/Demo/Example/Blocks
Classes for interfacing with the templates.
• Layouts: app/design/frontend/base/default/layout/demo_example.xml
XML Configurations for Blocks.
• Templates: app/design/frontend/base/default/template/demo/template.phtml
XML Configurations for Blocks.
• Media: skin/frontend/base/default/[css,images,js]/demo/filename
Extension specific media assets
Magento Extensions - Code
• Controller: /app/code/community/Demo/Example/controllers/Router.php
Dispatched through Front Controller object. Action is matched to class and
method. Controller instances Layout Object which in turn calls Block classes.
• Helper: /app/code/community/Demo/Example/Helper/Data.php
Used whenever you either are too lazy to make a model, or it just doesn’t make
sense in the context of a model. (Does it have an internal state – It’s a model)
• Model: /app/code/community/Demo/Example/Model/Thing.php
Used to model data structures. Oftentimes calling database through Resource
Models. Resource Models wrap all database transactions. Additionally Magento
uses collections to create and iterate through lists of Models.
Using Core Class Overrides
Easy and “Safe” way to override core functionality
Files are placed in:
/app/code/local/Mage/Catalog/Block/Navigation.php
This will override and replace
/app/code/core/Mage/Catalog/Block/Navigation.php
• Copy the file from the original and edit as you
would expect.
• Use this method very sparingly.
• It creates technical debt, because you have to
maintain your “copy” of the core file.
• Not the preferred method and some still
consider this editing core.
Extensions - Rewriting Core Classes
• Still easy and a “Safer” way to override
core functionality
• Requires an extension to create a class
rewrite
• Rewrite class extends core class
• Preserves code through upgrade
• Much safer than just overriding the
whole class because its isolated in an
extension.
• Chain rewrites together to create
complex dependencies
• Winner takes all strategy makes this
bothersome as site grows.
/app/code/community/Demo/Example/etc/config.xml
<config>
<global>
<models>
<catalog>
<rewrite>
<product>Demo_Example_Model_Product</product>
</rewrite>
</catalog>
</models>
</global>
</config>
/app/code/community/Demo/Example/Product.php
<?php
include(‘Mage/Catalog/Model/Product.php’);
class Demo_Example_Model_Product extends Mage_Catalog_Model_Product{
// Functions here will rewrite the Magento Catalog Product Model Class
}
Extensions - Events / Observers
• The proper way to hook into Magento
Business Logic
• Declared in config.xml
• Many Observers to One Event
• Observers are Models in the modules
Model/ directory
• Events are declared for most things you
will need to hook into
• You can add your own Events, combining
this with the Rewrite or Override
methods
/app/code/community/Demo/Example/etc/config.xml
<config>
<global>
<events>
<checkout_cart_product_add_after>
<observers>
<Demo_Example_Model_Observer>
<type>singleton</type>
<class>Demo_Example_Model_Observer</type>
<method>addtocartEvent</method>
</Demo_Example_Model_Observer>
</observers >
</checkout_cart_product_add_after>
</events>
</global>
</config>
/app/code/community/Demo/Example/Model/Observer.php
class Demo_Example_Model_Observer {
public function addtoCartEvent(Varien_Event_Observer $observer){
// Observer Code goes here
}
}
List of events in CE 1.9
https://wiki.magento.com/display/m1wiki/Magento+1.x+Events+Reference
Extensions - Blocks
• Blocks are PHP Objects
• Each block is tied to a single Template
file.
• Inside the Template, $this keyword
refers to the Template’s Block object.
• Blocks can include Blocks nesting them
utilizing the getChildHtml() method.
• Blocks are instanced from the Layout
configuration, typically from layout XML
files.
/app/code/community/Demo/Example/etc/config.xml
<config>
<global>
<blocks>
<exampleblock>
<class>Demo_Example_Block</class>
</exampleblock>
</blocks>
</global>
</config>
/app/code/community/Demo/Example/Block/Product.php
<?php
class Demo_Example_Block_Product extends Mage_Core_Block_Template{
//Functions that would be called in phtml
// they would use the $this->functionName to call them
}
Extensions - Controllers
• Controllers are used to route requests.
• Controllers should be lightweight, keep
business logic out of your controllers.
• No really, keep your logic in helpers or
models.
• Controller matches route
• Class/Method is fired
• Layout Object is instanced, it creates all the
blocks.
• You can extend core controllers:
http://inchoo.net/dev-talk/how-to-extend-magento-core-controller/
• Learn more:
http://alanstorm.com/magento_controller_hello_world
/app/code/community/Demo/Example/etc/config.xml
<config>
<frontend>
<routers>
<examplerouter>
<args>
<module>Demo_Example</module>
<frontName>demoexample</frontname>
</args>
</ examplerouter >
</routers>
</frontend>
</config>
/app/code/community/Demo/Example/controllers/IndexController.php
<?php
class Demo_Example_Block_Product extends Mage_Core_Controller_Front_action
{
public function indexAction(){
// would fire on http://site.com/demoexample
}
}
Extensions – Install / Upgrade Scripts
• Uses the module version in app/etc/module/Demo_Example.xml
and compares against the value in the core_resource table
• Requires resource models to be setup properly
• Install and upgrade scripts live in:
app/code/community/Demo/Example/sql/uniquename/
Install-0.1.0.1.php would contain and $installer
• This will fire off on ANY request if the config_cache is cleared,
“upgrading” modules, which can be confusing.
• Good Write up on this:
http://alanstorm.com/magento_setup_resources
Installer scripts can be really confusing.
Designs and Design Choices
• Designs can easily become extensions and become
dependent on extensions easily.
• Designs are also highly dependent on the front-end HTML
choices that are made.
• Magento has a built in Responsive Design(RWD)
• When designing for an existing or new site, there are a lot
more constraints than when looking at extensions.
Layout XML Files
Layouts can drive how the page is displayed
This example is setting the homepage to be 1 column wide:
<demo_index_index>
<reference name=“root”>
<action method=“setTemplate”>
<template>page/1column.php</template>
</action>
</reference>
</demo_index_index>
Use Commercebug to track down
which pieces of Layout are being
rendered.
Layout XML - Templates and Blocks
Layouts also drive what loads where
(blocks / templates)
Here is an example of displaying the demo module content block:
<demo_index_index>
<reference name=“content”>
<block type=“core/template” name=“demo_content”
template=“demo/demo_content.phtml”>
</reference>
</demo_index_index>
Toggle on Template Path Hints to find
out which piece is loading where on the
page, this can also show block class.
More on Templates and Blocks
Templates are the key to theming in Magento
• Templates are created as “.phtml” documents
• Magic variable “$this” allows us to access parent block class
• Template best practices:
Frontend components should be as modular as possible
Logic should only be used when coming directly from parent block class
Backend logic (i.e. querying data) should NEVER live in templates
Responsive frameworks make prototyping easier and faster
Don’t use hard URL paths, or include assets in templates.
One key component to
designs we have skipped over
today is Handles, which are
used to generate the layout
that will be used to render the
templates and blocks.
Acumen – A great starting design
http://themeforest.net/item/acumen-the-highly-extensible-magento-theme/978466
Acumen is a 5 year old theme by Gravity Department
• 960 Grid
• HTML5 + CSS3
• High Quality
• Loaded to the gills with widgets and features
• Maintained by author
• Not Responsive Design
Magento 101 – Mathew Beane – php[world] 2015
Magento Training and
Certification
Learning Magento
52
Magento Training
StackExchange: https://magento.stackexchange.com/
Very active community, easy to get answers.
Magento site: http://magento.com/training/overview
Tons of resources, documentations for Magento 1 is in a great spot.
The on-demand videos are cheap and amazing.
Blogs:
Alan Storm: http://alanstorm.com/
Belvg: http://blog.belvg.com/
Ichoo: http://inchoo.net/category/magento/
Alan MacGregor: http://coderoncode.com/
Alan Kent: http://alankent.me/
Magento Certification
Magento Certifications:
• CERTIFIED SOLUTION SPECIALIST
• FRONT END DEVELOPER
• CERTIFIED DEVELOPER
• CERTIFIED DEVELOPER PLUS
“Experienced Magento professionals can validate their real-world skills by earning a
Magento Certification. Magento Certification Exams are geared toward professionals
who want to differentiate themselves from the competition with the ultimate
Magento credential.”
- http://magento.com/training/catalog/certification
Magento Certification Subjects
Basics: Introduction to Magento code hierarchies, modules and configuration.
Request Flow: Learn how Magento bootstraps itself and handles requests.
Rendering: Understand how pages are rendered - themes, layouts, blocks and templates.
Databases: Discover models, resources models and collections.
EAV: Entity Attribute Value tables, explained.
Adminhtml: Manage admin area forms and grids.
Catalog: Find out about categories, products, layered navigation and taxes.
Checkout: Covering quotes, orders and shipping and payment methods.
Sales: Order creation and management.
Advanced: API and Widgets etc.
Magento Certification Study Guides
http://info.magento.com/rs/magentocommerce/images/Certification-Study-Guide-MCD-v1.pdf
Official study guide, a good starting point for studying for the exam. It will give you a broad overview of the
subjects.
http://magento.com/training/catalog/technical-track
On-demand course, really quite a good course even if a bit dated. Then again, so is the test.
http://magecert.com/
Put together by some of the community as a way to dig into examples for each of the subjects in the test.
http://magento.com/training/catalog/moderators-kit
Cheap alternative, covers the entire gamut of the test and is really a great learning tool for teams.
https://shop.vinaikopp.com/grokking-magento/
A great companion to the moderators kit, with Vinai Kopp taking you through each of the examples for the
first part of the moderator kit.
Magento 101 – Mathew Beane – php[world] 2015
Magento 2
It’s GO TIME!
57
Magento 2.0.0-RC1 Being Released
Magento 2 – Release Information
Six basic Goals of Magento 2
• Modern Tech Stack
• Improved Performance and Scalability
• Streamline Customizations
• Simplify Integrations
• Cleaner Install and Upgrades
• High Quality Code & Testing http://www.elevateweb.co.uk/magento-2/magento-live-uk-2014-magento-2-update
Magento 2 – Under the Hood
http://devdocs.magento.com/guides/v2.0/architecture/archi_perspectives/arch_diagrams.html
• PHP 5.7 / 7 / HHVM Support
• Dependency Injection
• Service Layer/Contracts
• Jquery
• HTML 5, CSS, LESS
• Require.js
• Symfony & other 3rd Party
libraries
• Composer
• Full Test Coverage
Magento 2 – Features Overview
• Very modular with a strong backbone in open-source
• CE will not have all of the scalability and clustering
features
• Many Client-side and frontend enhancements
• Up to 3 master databases for separate business domains
Main (Catalog),Checkout and Order
• Varnish support out of the box (Swapable for FPC)
• Support for RabbitMQ and other queueing systems
Present in the deferred stock update feature
• Asynchronous order insertion
Magento 2.0.0-RC1 Being Released
Magento 2 – Get Involved
https://github.com/magento/magento2
You can branch, make Pull Requests and they are actively participating in issues there.
http://magento.com/developers/magento2
Central hub for all the official Magento 2 information
http://devdocs.magento.com/guides/v2.0/architecture/arch_whatis.html
Documentation, which is still being developed actively. You can branch and PR here as well.
http://magento.com/training/catalog/fundamentals-of-magento-2-development
Magento 2 training course, on-demand. Still in development, however its very inexpensive
right now.
Magento 2 – Learn More Here
Magento 2 Talks at php[world]
• Magento 2 Dependency Injection, Interceptors, and You
Joshua Warren – Today @ 4:30 PM in Ash Grove C
• Magento 2: New and Innovative?
David Alger – Wednesday @ 4:30pm in Potomac
• Extending Magento: Fundamentals of Development in Magento 2
David Alger – Thursday @ 10:00am in Ash Grove C
63
Mathew Beane
Tweeter: @aepod
mbeane@robofirm.com
https://joind.in/talk/view/14815
You – For attending. Thanks for showing up.
My Family – For putting up with me making these slides.
Magento Community – Very good people, deserve a lot of thanks.
PHP Community – For just being so damned cool.
Ben Marks - Community Magento @benmarks on twitter
PHP Architect: Great conferences and real community leadership.
Robofirm – They also put up with me making these slides.
THANKS TO THE FOLLOWING:
Editor's Notes
Magento employs the MySQL relational database management system, the PHP programming language, and elements of the Zend Framework. It applies the conventions of object-oriented programming and model-view-controller architecture. Magento also uses the entity–attribute–value model to store data.- Wikipedia
You can learn a LOT about php from Magento.
You cannot extend the following classes: Mage_Core_Block_Template, Mage_Core_Model_Abstract, Varien_Object, Mage_Core_Block_Abstract, Mage_Customer_Model_Address_Abstract
The same fallback strategy that is present for design layout and template files is present for skin assets. If files are not found in your selected <package>/<theme> the application will follow the fallback strategy and find the appropriate files in the default directories.
We come back to this in a minute.
The first place Magento will look for a file is
app/design/frontend/Custom_Package/Custom_theme/
skin/frontend/Custom_Package/Custom_theme
If Magento cannot find the file in Custom Package/Custom Theme it will look in:
app/design/frontend/Custom_Package /default
skin/frontend/Custom_Package/default
If Magento cannot find the file in Custom_Package/default it will look in:
app/design/frontend/base/default
skin/frontend/base/default
Collections implement: IteratorAggregate and Countable
Model Collections as arrays that also have methods attached.
Seeing 400-500 tables or more is not unusual
Many are index or flat data tables.
Installation: Manual and automated installation methods. And a short discussion of source control.
Development: The basic parts of an extension.
Designs: Layouts and templates.
We are going to be moving quickly through this coursework.
Installation: Manual and automated installation methods. And a short discussion of source control.
Development: The basic parts of an extension.
Designs: Layouts and templates.
Installation: Manual and automated installation methods. And a short discussion of source control.
Development: The basic parts of an extension.
Designs: Layouts and templates.
Keep calm, check the version # again and carry on.
Installation: Manual and automated installation methods. And a short discussion of source control.
Development: The basic parts of an extension.
Designs: Layouts and templates.
Each page request in Magento will generate several unique Handles. You can think of the Package Layout similar to the global config. It's a large XML file that contains every possible layout configuration for a particular Magento install.
Layouts are also used to add js, css etc to the page. They are very powerful.
Layouts are also used to add js, css etc to the page. They are very powerful.
Service Layer is a set of interfaces used to define the public api of a module.
Allows for the use of the repository pattern (abstract the way data is mapped out to an object, db can be anything)