MVC 기반 워드프레스 플러그인 개발 개요

1. My Second WordPress
Plugin
강동혁
dongheok@shoplic.kr
2019-02-07

2. Problems
• 워드프레스 플러그인 개발 방법론 부재
• Naming Conflicts

3. add_action(‘init’, ‘my_plugin_init’);
if ( !function_exists(‘my_plugin_init’)) {
function my_plugin_init() {
echo ‘This is my plugin init.’;
}
}

4. add_action(‘my_plugin_action’, ‘my_plugin_action’);
if ( !function_exists(‘my_plugin_action’)) {
function my_plugin_action() {
echo ‘This is my plugin action.’;
}
}

5. Solutions
• MVC(Model, View, Controller)
• CBD(Component Based Development)

6. M
V C
Component
M
V C
Component
M
V C
Component
M
V C
Component
M
V C
Component
PLUGIN

7. Plugin Packaging
plugin-name/
components/
comp1/
views/
models/
controller.php
comp2/
plugin-name.php

8. Model
• WordPress Models
• Tables
• wp_posts, wp_postmeta, wp_comments, wp_commentmeta,
wp_users, wp_usermeta, …
• Classes
• WP_Post, WP_Comment, WP_User, …
• Functions
• get_posts(), get_comments(), get_users(), …
• Query
• WP_Query
// Show Posts from Several Authors
$query = new WP_Query( array( 'author' => '2,6,17,38' ) );

9. Simple ORM for Custom Tables
CREATE TABLE `site_domain` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`site_id` bigint(20) DEFAULT NULL,
`domain` varchar(255) COLLATE utf8mb4_bin DEFAULT NULL,
`primary` tinyint(1) DEFAULT NULL,
`https` tinyint(1) DEFAULT NULL,
`created_date` datetime DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `IDX_SITE_ID` (`site_id`)
)

10. class Site_Domain extends SP_Entity
{
static $_database = 'sp_hosting';
static $_primary_key = 'id';
static $_column_formats = [
'id' => '%d',
'site_id' => '%d',
'domain' => '%s',
'primary' => '%d',
'https' => '%d',
'created_date' => '%s',
];
static function get_table() {
return 'site_domain';
}
}
SP_ORM::insert(new Site_Domain([
'site_id' => $site->id,
'domain' => $_POST['domain’],
'https' => $_POST['https’],
'created_date' => current_time('mysql'),
]));
SP_ORM::select(new Site_Domain([
'site_id'=>$site->id
]));
SP_ORM::delete(new Site_Domain([
'site_id' => $site->id,
'domain' => $_POST['domain’]
]));

11. Controller
• A set of actions, filters, and shortcodes
Abstract_Controller
$id
init()
add_action()
add_filter()
add_shortcode()
view()
My_Controller
login()
class My_Controller extends Absctract_Controller {
$id = ‘shoplic’;
function init() {
$this->add_action(‘login’);
}
function login() {
// 로그인 처리
}
}
=> add_action(‘shoplic_login’, My_Controller::login)

12. // controller.php
class My_Controller extends
Absctract_Controller {
$id = ‘shoplic’;
function init() {
$this->add_shortcode(‘login_form’);
}
function login_form() {
// 로그인 폼
$this->view(‘login_form’, [
‘message’ => ‘로그인‘
]);
}
}
add_shortcode(‘shoplic_login_form’,
My_Controller::login_form)
// login_form.php
<h1><?php echo $message; ?></h1>
<form>
</form>
// Editor
[shoplic_login_form]

13. Communication between Components
// comp1/controller.php
class Comp1_Controller extends
Absctract_Controller {
$id = ‘shoplic’;
function init() {
$this->add_action(‘logout’);
}
function logout() { // 로그아웃 처리
}
}
 add_action(‘shoplic_logout’, Comp1_Controller::logout)
// comp2/controller.php
class Comp2_Controller extends
Abstract_Controller {
$id = ‘wordpress’;
function logout() {
do_action(‘shoplic_logout’);
}
}

14. Prevent Naming Conflicts
• Don’t Do Naming
• Use Anonymous Functions(5.3~) & Anonymous Classes(7~)

15. new class() extends Abstract_Controller {
$id = ‘shoplic’;
function init() {
$this->add_action(‘login’, function() {
// 로그인 처리
});
}
}

16. 감사합니다.
강동혁
donghyeok@shoplic.kr