drupal 7 development: beginning module development
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BEGINNING MODULE DEVELOPMENT
Joe Crespo | Developer, Aten Design Group
YOUR NOT-SO-HUMBLE PRESENTERDesktop publishing >> Graphic design >> Web design >> PHP developer >> Drupal
Joe Crespo | Developer, Aten Design Group
“Hello World”
PART 1
DRUPAL TOOLBOX
Get to know these things: (if you don’t already)
1. Git: The version control software of choice for Drupal.
2. drush: A command line tool used for Drupal development.
3. devel: A really useful Drupal development module.
4. IRC: Internet Relay Chat (IM). #drupal-colorado
5. api.drupal.org is your new best friend.
Beginning Module Development | Intro
DRUPAL TOOLBOX
Super-common Drupal functions we’ll look at today:
1. arg() - http://bit.ly/function_arg
2. form_set_error() - http://bit.ly/form_set_error
3. check_plain() - http://bit.ly/check_plain
4. t() - http://bit.ly/function_t
Super-common functions we probably won’t get to:
1. variable_get() - http://bit.ly/variable_get
2. variable_set() - http://bit.ly/variable_set
Beginning Module Development | Intro
DRUPAL TOOLBOX
The ‘devel’ module… essential! Essential!! ESSENTIAL!!!
Provides the world’s most useful function:
• dpm() - http://bit.ly/function_dpm
Gives you a great place to test your scripts:
• http://yoursite.domain/devel/php
Beginning Module Development | Intro
Hooks are functions automatically called during execution.
Your module makes changes to content or functionality by invoking these hooks.
Beginning Module Development | Getting Started
For example: Your Module Name: my_first_moduleDrupal Hook: hook_form_alter()Module invokes Hook with my_first_module_form_alter()
DRUPAL TOOLBOX: HOOKS
DRUPAL TOOLBOX: HOOKS
Hooks you'll use constantly!
1. hook_init() - http://bit.ly/hook_init (sparingly!)
2. hook_form_alter() - http://bit.ly/form_alter
Other super-common hooks we won’t get to today:
1. hook_menu() - http://bit.ly/hook_menu
2. hook_node_presave() - http://bit.ly/hook_node_presave
3. hook_form_FORM_ID_alter() - http://bit.ly/hook_form_FORM_ID_alter
4. hook_form_BASE_FORM_ID_alter()- http://bit.ly/hook_form_BASE_FORM_ID_alter
Beginning Module Development | Intro
PART 2Rules of Thumb
DRUPAL DEVELOPMENT PRINCIPLES
“Every time you hack core, God kills a kitten”
Beginning Module Development | Rules of Thumb
DRUPAL PRESENTATION
OBLIGATORY KITTEN PHOTO
Separate Drupal core modules, contrib modules, and your custom modules.
ORGANIZING YOUR SITE
Beginning Module Development | Rules of Thumb
• Always keep in mind that the
module you are contemplating might
already exist.
• Search Drupal.org to see if the
module has already been built.
• If you don’t find an obvious answer,
ask on IRC.
BEFORE YOU START DEVELOPING A MODULE
Beginning Module Development | Rules of Thumb
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Beginning Module Development | Rules of Thumb
PART 3The long, long live demo(operating without a net)
CONCLUSION
BEGINNING MODULE DEVELOPMENT
Joe Crespo | Developer, Aten Design Group
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