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Introduction to Module Development (Drupal 7)
This document provides an overview of how to create a custom module in Drupal, including the necessary tools, files, and code structure. It explains APIs and hooks, which allow modules to interact with Drupal core functionality. Examples are given of how to modify an existing form, add a custom page, and alter node creation using various hooks. Resources for further documentation and examples are listed.
Introduction to Module Development (Drupal 7)
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- 2. 2 April Sides Assessment WebDeveloper North Carolina Institute of Climate Studies (NCICS) North Carolina State University National Centers for Environmental Information (NCEI) Drupal ID: weekbeforenext Asheville Drupal User Group Member
- 3. 3 • Tools -what you need to develop a module • API/Hooks - how to get Drupal to run your code • Anatomy - what files you need and what code should be included in those files • Resources - where to find the right hooks • Example - how to modify an existing form, etc.
- 4. 4 • Some PHPcoding experience • Plain text editor Mac: Sublime Text - http://www.sublimetext.com PC: Notepad++ - https://notepad-plus-plus.org • A working Drupal site Acquia Dev Desktop - https://www.acquia.com/downloads • Troubleshooting /research resources Devel module - https://www.drupal.org/project/devel Internet access
- 5. 5 • What isan API? An application programming interface (API) expresses a software component in terms of its operations, inputs, outputs and underlying types. Drupal core modules contain MODULE_NAME.api.php files defining functions that other modules can “hook” into. Well documented at http://api.drupal.org
- 6. 6 • What isa hook? Hooks are how modules can interact with the core code of Drupal. A hook can be thought of as an event listener in the sense that an event triggers an action. Ex. hook_delete Some hooks let you alter things that have been generated just before they're processed. Ex. hook_form_alter Other hooks allow you to add or register new content items. Ex. hook_block_info
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- 12. 12 • I wantto modify the contact form
- 13. 13 • I wantto modify the contact form: Enable “Send yourself a copy.” checkbox by default Change the title of the form to “AWESOME Contact Form” Change the field label “Your name” to “Your AWESOME name” Add help text to the Subject field with suggestions Change the text of the submit button to “Send your AWESOME message”
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- 24. 24 api.drupal.org – FormAPI Reference
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- 33. 33 api.drupal.org – FormAPI Reference
- 34. 34 api.drupal.org – FormAPI Reference
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- 38. 38 api.drupal.org – FormAPI Reference
- 39. 39 api.drupal.org – FormAPI Reference
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- 43. 43 api.drupal.org – FormAPI Reference
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- 46. 46 • I wantto add a non-node page: The page should be accessible by anyone who can see published content at: mysite.com/awesome-page The title of the page should be “I can make a page!” Include the following paragraph on the page: “I am so awesome that I can create my own page in a custom module.”
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- 65. 65 • I wantthe following to happen when an author creates a new article: Change the author to me, so it looks like I’m doing more work than I am. Make sure that all new articles are set to publish by default, so my boss will see “my” work.
- 66. 66 api.drupal.org – NodeAPI Hooks
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- 81. 81 • Examples forDevelopers - https://www.drupal.org/project/examples • Drupal API reference - https://api.drupal.org • DrupalContrib API reference - http://www.drupalcontrib.org • Drupal Answers - http://drupal.stackexchange.com