Plugin development wpmeetup010
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This document summarizes Barry Kooij's presentation on plugin development. It discusses Barry's setup for plugin development using a MacBook Air, PhpStorm IDE, and Git version control. It also covers debugging, code templates, leveraging WordPress core APIs and hooks, database usage, unit testing, documentation, object-oriented patterns, internationalization, and taking questions.
![JS “HOOKS” (EVENTS)
$('body').bind(’event’, function(event,
the_value) {
});
$('body').trigger(’event', [ value ]);](https://image.slidesharecdn.com/plugin-development-wpm010-131126162502-phpapp02/85/Plugin-development-wpmeetup010-11-320.jpg)
![NAMING CONVENTIONS
function some_name( $some_variable ) { [...] }
class Walker_Category extends Walker { [...] }
class WP_HTTP { [...] }
my-plugin-name.php
class-my-class.php](https://image.slidesharecdn.com/plugin-development-wpm010-131126162502-phpapp02/85/Plugin-development-wpmeetup010-14-320.jpg)
![PREFIXES
WordPress : PHP version 5.2.4 or greater
Namespaces : 5.3.0 or greater
Tot die tijd, prefixen.
class SP_Post_Link_Manager { [...] }](https://image.slidesharecdn.com/plugin-development-wpm010-131126162502-phpapp02/85/Plugin-development-wpmeetup010-29-320.jpg)
![CAPABILITIES
if ( ! current_user_can( SP_Cap_Manager::get_capability(
$_GET['sp_post_link'] ) ) ) {
return;
}](https://image.slidesharecdn.com/plugin-development-wpm010-131126162502-phpapp02/85/Plugin-development-wpmeetup010-31-320.jpg)
![NONCES
Number used ONCE
wp_nonce_field( plugin_basename( __FILE__ ),
'sp_sortable_nonce' );
if ( ! isset( $_POST['nonce'] ) || ! wp_verify_nonce(
$_POST['nonce'], plugin_basename( __FILE__ ) ) ) {
return;
}](https://image.slidesharecdn.com/plugin-development-wpm010-131126162502-phpapp02/85/Plugin-development-wpmeetup010-32-320.jpg)
Plugin development wpmeetup010
- 2. BARRY KOOIJ Twitter : @cageNL Lead Developer WordPress @ INDICIA Freelance @ Cageworks Plugin developer What The File Sub Posts Contributor EDD & extensies Core contributor Moderator WPNL forum
- 4. MIJN SETUP Device IDE Versiebeheer MacBook Air PhpStorm GIT, GitHub / private server Commandline
- 6. DEBUGGIN G define( 'WP_DEBUG', true ); if ( WP_DEBUG ) { define( 'SCRIPT_DEBUG', true ); define( 'WP_DEBUG_LOG', true ); define( 'WP_DEBUG_DISPLAY', true ); @ini_set( 'display_errors', 0 ); } display_errors = On; error_reporting = E_ALL | E_STRICT;
- 8. WORDPRESS CORE Open source, maak hier gebruik van! API’s, API’S, API’s Filters & Hooks
- 9. API’S Dashboard Widgets API Database API HTTP API File Header API Filesystem API Metadata API Options API Plugin API Quicktags API Rewrite API Settings API Shortcode API Theme Modification API Theme Customization API Transients API Widgets API XML-RPC WordPress API
- 10. FILTERS & HOOKS add_action( ‘hook_name’, ‘my_function’ ); do_action( ‘hook_name’ );
- 11. JS “HOOKS” (EVENTS) $('body').bind(’event’, function(event, the_value) { }); $('body').trigger(’event', [ value ]);
- 12. BACKWARDS COMPATABILITY Deprecate code Pas later geen unit tests aan, maar voeg unit tests toe
- 14. NAMING CONVENTIONS function some_name( $some_variable ) { [...] } class Walker_Category extends Walker { [...] } class WP_HTTP { [...] } my-plugin-name.php class-my-class.php
- 15. DATABASES Gebruik altijd de API! $wpdb->prepare $wpdb->prepare( "SELECT * FROM {$wpdb>posts}" WHERE `ID` = %d", $special_id );
- 16. YODA CONDITIONS if ( true == $the_force ) { $victorious = you_will( $be ); } A little bizarre, it is, to read. Get used to it, you will.
- 17. UNIT TESTING PHPUnit /** * @ticket 22212 */ function test_get_multiple_roles_by_user_query() { $this->factory->user->create_many( 2, array( 'role' => 'subscriber’ ) ); $this->factory->user->create_many( 3, array( 'role' => 'editor’ ) ); $wp_user_search = new WP_User_Query( array( 'role' => array( 'subscriber’, 'editor' ) ) ); $users = $wp_user_search->get_results(); $this->assertEquals( 5, count( $users ) ); }
- 18. CHANGELOG Hou bij wat je wanneer veranderd hebt
- 19. SUPPORT Als je iets bouwt, support het dan Geef op je website je support tijden aan Support systemen
- 20. WORDPRESS.ORG REPO Header afbeelding Duidelijk omschrijving Downloads i.c.m. rating Vraag om ratings!
- 22. CONDITIONAL LOADING OF CODE Laad code enkel waar nodig is_admin()
- 23. DOCUMENTATION Schrijf je code doc direct Betere IDE suggesties
- 24. CODE
- 26. class My_Plugin { private static $instance = null; public static function get() { if( null == self::$instance ) { self::$instance = new self(); } return self::$instance; } private function __construct() { } }
- 27. function My_Plugin() { return My_Plugin::get(); } add_action( 'plugins_loaded', function() {My_Plugin::get(); });
- 28. PLUGIN DIR & FILE if ( ! defined( ’X_PLUGIN_DIR' ) ) { define( 'X_PLUGIN_DIR’, plugin_dir_path( __FILE__ ) ); } if ( ! defined( ’X_PLUGIN_FILE' ) ) { define( ’X_PLUGIN_FILE', __FILE__ ); }
- 29. PREFIXES WordPress : PHP version 5.2.4 or greater Namespaces : 5.3.0 or greater Tot die tijd, prefixen. class SP_Post_Link_Manager { [...] }
- 31. CAPABILITIES if ( ! current_user_can( SP_Cap_Manager::get_capability( $_GET['sp_post_link'] ) ) ) { return; }
- 32. NONCES Number used ONCE wp_nonce_field( plugin_basename( __FILE__ ), 'sp_sortable_nonce' ); if ( ! isset( $_POST['nonce'] ) || ! wp_verify_nonce( $_POST['nonce'], plugin_basename( __FILE__ ) ) ) { return; }
- 33. DIRECT ACCESS if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
- 34. I18N load_plugin_textdomain( 'sub-posts', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' ); _e( ‘my-string’, ‘sub-posts’ );
- 35. Q& A Twitter @cageNL WordPress & Github: barrykooij 7 januari meetup in Tilburg
Editor's Notes
- #9: Naastdocumentatiekan je dusook in je eigen IDE vaakdoorklikkennaar de bron