Gajendra sharma Drupal Module development

  • 122 views
Uploaded on

Drupal Module development and Supports

Drupal Module development and Supports

More in: Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
122
On Slideshare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
2
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. My first Drupal module! Why not?
  • 2. About @ Gajendra Sharma • Started as PHP developer with custom CMS •“You need Linux” they said •I know Drupal since version 5.x Email: gajen.ksharma@gmail Skype: gajendrakumarsharma1688 LinkedIn: www.linkedin.com/in/gajendrasharma
  • 3. Drupal •  Available from drupal.org. •  Runs on every machine with PHP, supported database and web server. •  Very customizable (themes, modules). •  Good documented. •  No limits.
  • 4. A whole bunch of modules
  • 5. Which one to use?
  • 6. Missing a module?
  • 7. Three kinds of modules (3 Cs) •  Core –  Shipped with Drupal –  Approved by core developers and community •  Contributed –  Written by community –  Shared under the same GNU Public License •  Custom –  Created by website developer
  • 8. Where to? Drupal Core Modules Core Themes Contributed Modules Contributed Themes Custom Module Custom Theme /sites/[all|mysite.com]/custom
  • 9. Module name •  Should be a UNIQUE “short name” •  Used in all file and function names •  Must start with a letter •  Only lower-case letters and underscores •  We will use name: “dc_stat” –  For display current node/user stats
  • 10. Create a folder + module file •  Module name “dc_stats”. •  Create empty folder: –  /sites/*/modules/custom/dc_stats/ •  Create new file “dc_stats.module” with opening PHP tag and NO closing tag!! •  Create new file “dc_stats.info” for meta information.
  • 11. *.info •  Required for every module! •  Standard .ini file format – key/value pairs name = Drupal statistic! description = Provides some statistic data.! core = 7.x! package = Damjan Cvetan! Other optional keys: stylesheets, scripts, files, dependencies, …
  • 12. Checkpoint •  Navigate to Modules section on your site •  You should see your module •  Enable it!
  • 13. Coding standards •  Use an indent of 2 spaces, no tabs! •  •  •  •  UNIX line ending (n) Omit closing “?>” PHP tag Constants should be all-uppercase Comments are your friends!
  • 14. Half way there Hook(s) hook – [hoo k], noun Ÿ a curved or angular piece of metal or other hard substance for catching, pulling, holding, or suspending something. •  Fundamental to Drupal
  • 15. How does it work? Call dispatch Foreach (enabled_module):! module_name_menu();! end foreach;! Call for hook: hook_menu() Drupal runFme locale_menu()! user_menu()! contact_menu()! help_menu()! …! …! dc_stats_menu()! …! …! trigger_menu()! path_menu()! Drupal runFme
  • 16. Hooks line up! •  hook_help() – Provides available documentation. •  hook_menu() – For paths registration in order to define how URL request are handled. •  hook_init() – Run at the beginning of page request. •  hook_cron() – Called whenever a cron run happens. •  More at http://api.drupal.org/
  • 17. API.drupal.org •  Drupal developer’s documentation. •  Doc for Drupal 4.6+. •  Describes function calls, their parameters and return values. •  You can see the code and “who” is calling this code within Drupal. •  http://api.drupal.org
  • 18. Let’s code •  Define callback function dc_stats_page() as follows: funcFon dc_stats_page(){ return "Hello world! You’re awesome!”; } •  This will return defined string on call. •  Put this code in dc_stats.module file.
  • 19. Hey Drupal! Come in! •  Register path with hook_menu(). •  We will use basic return array structure. funcFon dc_stats_menu(){ $items['dc/stats-page'] = array( 'Ftle' => 'Stats info page', 'page callback' => 'dc_stats_page', 'access arguments' => array('access content'), 'type' => MENU_CALLBACK, ); return $items; } Visit URL: /dc/stats-page to see if it works. (You might need to clear cache first.)
  • 20. Get some real data funcFon dc_stats_page(){ drupal_set_Ftle("Drupal staFsFcs"); $node_count = $db_node_count; $user_count = $db_users_count; $header = array("InformaFon", "Value"); $rows[] = array('Number of nodes:', $node_count); $rows[] = array('Number of users:', $user_count); return theme_table(array( 'header' => $header, 'rows' => $rows, … … )); // return }
  • 21. Happy ending •  Refresh your page and see your work. •  You can do much more – I’m certain! •  Use your PHP + any other knowledge with existing Drupal functions, hooks and variables!
  • 22. Links to consider •  http://api.drupal.org http://drupalcontrib.org/ •  http://buildamodule.com/ •  http://drupal.org/project/devel –  A suit of modules containing fun for module developers and themers.
  • 23. Books •  Drupal 7 Development by Example •  Beginning Drupal 7 •  Drupal 7 Module Development •  … •  …
  • 24. Q&A