Drupal is a content management system and web application framework written in PHP. It uses a module and theme architecture that allows users to customize functionality and appearance. Key Drupal concepts include modules, themes, regions, blocks, nodes, taxonomy, and APIs. The filesystem is organized with directories for core, modules, and themes.

1. Drupal Anatomy
Gerald Z. Villorente
open-source developer

2. About Me
 Software Engineer at Kite SystemsSoftware Engineer at Kite Systems
 FOSS evangelistFOSS evangelist
 and aand a proud dadproud dad

3. What is Drupal?

4. Drupal is?
 Content Management SystemContent Management System
 Content Management FrameworkContent Management Framework
 Web Application FrameworkWeb Application Framework
 Written in PHPWritten in PHP

5. Drupal is like a...
Lego’s model of Le Corbusier’s Villa Savoye. Photo: © 2012, the LEGO Group

6. Technology Stack

7. http://techyari.in/understanding-drupal-how-it-actually-works/

8. Drupal Lingo

9. Drupal Common Terms
 Modules:Modules: self-contained applications that provide a specificself-contained applications that provide a specific
functionalityfunctionality
 Core
 Contrib
 Custom
 Themes:Themes: collection of files (PHP, INFO, CSS, JPG, GIF, PNG),collection of files (PHP, INFO, CSS, JPG, GIF, PNG),
which together determine the look and feel of a sitewhich together determine the look and feel of a site
 Core
 Contrib
 Custom
 Regions:Regions: defined areas of a page where content can be placeddefined areas of a page where content can be placed

10. Drupal Common Terms
 Blocks:Blocks: boxes visible in the regions of a Drupal websiteboxes visible in the regions of a Drupal website
 Node:Node: a piece of content in Drupal, typically corresponding to aa piece of content in Drupal, typically corresponding to a
single page on the sitesingle page on the site
 Taxonomy:Taxonomy: is the name of a powerful core module that gives youris the name of a powerful core module that gives your
sites use of termssites use of terms
 Vocabulary:Vocabulary: collection of termscollection of terms
 Terms:Terms: keyword, metadata, or tagskeyword, metadata, or tags
 API:API: application programming interface, a particular set of codeapplication programming interface, a particular set of code
and specs that software programs can follow to communicate withand specs that software programs can follow to communicate with
each othereach other
 Hook:Hook: internal Drupal callbacksinternal Drupal callbacks
Ex: foo_bar() - where “foo” is the name of the module (whoseEx: foo_bar() - where “foo” is the name of the module (whose
filename is thus foo.module) and “bar” is the name of the hookfilename is thus foo.module) and “bar” is the name of the hook

11. The Filesystem

12. Drupal Root Structure
Golden Rule:Golden Rule: Never ever alter/modify the core!Never ever alter/modify the core!

13. Site Directory Structure
Typical single site setupTypical single site setup

14. Site Directory Structure
Typical multi site setupTypical multi site setup

15. Module Structure

16. Theme Dir. & Files Structure

17. Drupal Framework Architecture

18. Theme, Module, and Core
http://www.ibm.com/developerworks/library/os-new-drupal-theme/

19. Theme Layer

20. Regions and Blocks

21. Theme Anatomy
http://drupal.org/node/171194

22. Theme Workflow
http://www.chapterthree.com/blog/david-needham/leveling-your-themer-lvl2-base-themes

23. Thank You!

24. Resources
 http://drupal.org/documentationhttp://drupal.org/documentation
 http://api.drupal.org/api/drupalhttp://api.drupal.org/api/drupal
 http://drupal.org/downloadhttp://drupal.org/download
 http://drupal.org/project/moduleshttp://drupal.org/project/modules
 http://drupal.org/forumhttp://drupal.org/forum
 http://drupal.stackexchange.com/http://drupal.stackexchange.com/
 http://groups.drupal.org/jobshttp://groups.drupal.org/jobs
 http://buildamodule.com/http://buildamodule.com/
 http://drupalize.me/http://drupalize.me/