![new.module
<?php
// $Id$
function new_form_alter(&$form, &$form_state, $formid){
if(substr($formid, -9) == 'node_form'){
$form['captcha'] = array(
'#type' => 'textfield',
'#title' => 'Captcha Question : What is 5 + 3?',
);
$form['#validate'][] = '_new_validate';
$form['#submit'][] = '_new_submit';
new.module }
}
function _new_validate($form, &$form_state){
if($form_state['values']['captcha'] != '8'){
form_set_error('captcha', 'Your Captcha answer is wrong!
So you are not a human or you don't know counting :D');
}
}
function _new_submit($form, &$form_state){
drupal_set_message('You are a human!');
}](https://image.slidesharecdn.com/osidaysmoduledevpresentation-100923111424-phpapp01/85/Drupal-Module-Development-12-320.jpg)
Drupal Module Development
- 1. Module Development Ipsita Mishra Siva Kumar Epari http://melity.com
- 2. About Us ●Ipsita Mishra ✔4 years of Drupal experience ✔Tech lead ✔Webadmin & Core member of Drupal Hyderabad ●Siva Kumar Epari ✔2 years of Drupal experience ✔Drupal Developer ✔Webadmin & Core member of Drupal Hyderabad
- 3. Types of Modules Core Modules Contrib Modules Custom Module
- 4. Core Modules These are the modules that ships with a Standard Drupal Release. There are Core Optional and Core Required modules. For example: Node User Block System Filter
- 5. Contrib Modules Over 5800 (as of July 20, 2010) free community- contributed modules, known as contrib modules, are available to alter and extend Drupal's core capabilities and add new features or customize Drupal's behavior and appearance.
- 6. Popular Contrib Modules These statistics are incomplete; only Drupal websites using the Update Status module are included in the data.
- 7. Custom Module A Custom module is one which is local to your Drupal Project. It's not yet contributed to the contrib repository.
- 8. Custom Module(When to write) You need to answer few questions before writing a Custom Module 1. What do you want to achieve by this custom module? 2. Did you search the Contrib Repository to see if a module is already available for that feature? 3. Have you enabled all possible Configurations of the Core & Contrib module to check if they offer you the feature you require? If your answer is, “Yes, I have done enough research and am sure I have to write the code now”, then go ahead ....
- 9. Custom Module(Why to write) I have 2 reasons to write a Custom module 1. I need a new feature which is not yet available in Drupal, and probably can be contributed as a Contrib Module. 2. I don't want to keep adding additional modules to my site for small tweaks, which I can manage in only one custom module for my website. Don't be too much dependent on Contribs.
- 10. A simple module directory structure modulename.info modulename modulename.module
- 11. new.info ; $Id$ name = Module name description = “Module description” modulename.info core = Drupal version (e.g.: 5.x, 6.x) package = Package name ; $Id$ name = Text Captcha description = “Text Captcha” new.info core = 6.x package = Osidays
- 12. new.module <?php // $Id$ function new_form_alter(&$form, &$form_state, $formid){ if(substr($formid, -9) == 'node_form'){ $form['captcha'] = array( '#type' => 'textfield', '#title' => 'Captcha Question : What is 5 + 3?', ); $form['#validate'][] = '_new_validate'; $form['#submit'][] = '_new_submit'; new.module } } function _new_validate($form, &$form_state){ if($form_state['values']['captcha'] != '8'){ form_set_error('captcha', 'Your Captcha answer is wrong! So you are not a human or you don't know counting :D'); } } function _new_submit($form, &$form_state){ drupal_set_message('You are a human!'); }
- 13. Download examples module from http://drupal.org/project/examples
- 16. hook_node_info()
- 17. hook_access()
- 18. hook_perm()
- 20. hook_form()
- 22. hook_validate()
- 23. hook_insert()
- 24. hook_schema()
- 26. hook_update() Preventing SQL injection is easy; db_query provides a way to use parametrized queries. Drupal's database functions replace the sprintf-like placeholders with the properly escaped arguments in order of appearance: %d - integers %f - floats %s - strings, enclose in single quotes %b - binary data, do not enclose in single quotes
- 27. hook_nodeapi()
- 28. hook_delete()
- 29. hook_load()
- 30. hook_view()
- 31. hook_theme()
- 32. Theme function
- 33. Menu System
- 34. hook_menu()
- 35. Menu Item Types "type": A bitmask of flags describing properties of the menu item. Many shortcut bitmasks are provided as constants in menu.inc: * MENU_NORMAL_ITEM: Normal menu items show up in the menu tree and can be moved/hidden by the administrator. * MENU_CALLBACK: Callbacks simply register a path so that the correct function is fired when the URL is accessed. * MENU_SUGGESTED_ITEM: Modules may "suggest" menu items that the administrator may enable. * MENU_LOCAL_TASK: Local tasks are rendered as tabs by default. * MENU_DEFAULT_LOCAL_TASK: Every set of local tasks should provide one "default" task, that links to the same path as its parent when clicked. If the "type" key is omitted, MENU_NORMAL_ITEM is assumed.
- 37. Drupal Blocks
- 38. hook_block() A Block represents some auxiliary content along with the primary content of the page.
- 39. The output is themed comment.module
- 40. Parameters hook_block($op = 'list', $delta = 0, $edit = array())
- 41. Operation: list
- 43. Operation: save
- 44. Operation: view
- 45. Developer's Tools ● Drush ● Devel and Devel Themer ● Coder ● Admin Menu
- 46. DRUpal SHell ● drush dl modulename/themename ● drush en modulename/themename ● drush dis modulename/themename ● drush pm-uninstall modulename/themename ● drush cc Resource: http://drupal.org/files/drush-cheat-sheet.pdf
- 47. Devel ● Devel: Helper functions for Drupal developers. ● Generate content: Accelerate development of your site or module by quickly generating nodes, comments, terms, users, and more. ● Node Access Summary: View the node access entries for the node(s) that are shown on a page.
- 48. Devel Themer
- 49. Coder This module helps in Code Review
- 50. A Sample Analysis by Coder
- 51. Resources http://api.drupal.org IRC Channel #drupal #drupal-support #drupal-hyderabad