Ecco un esempio completo e conciso basato sulle Meta Box in pagine personalizzate di Stephen Harris :
Stesso codice di una sostanza
<?php
/**
* Plugin Name: LHF Volunteer Form
* Description: Manages a google-sheet full of names and emails
* Plugin URI: http://ladehammerfestivalen.no/volunteer
* Author URI: http://genja.org
* Author: jazzoslav@gmail.com
* Text Domain: lhf-volunteer-form
* Domain Path: /languages
* Version: 0.2.0
* @package Lhf_Volunteer_Form
*/
require_once __DIR__ . '/vendor/autoload.php';
use Lhf\Sheet\RegistrationsSheet;
frivilligSystemMain();
function frivilligSystemMain() {
try {
$regSheet = \Lhf\Sheet\RegistrationsSheet::createInWordPress();
} catch (\Exception $ex) {
error_log(sprintf('%s:%d %s', __FILE__, __LINE__, $ex->getMessage()));
}
add_action('init', function() use ($regSheet) {
if (is_admin()) {
add_action( 'admin_menu', function() use ($regSheet) {
$screenId = DashboardView::screen_id;
$pageId = add_dashboard_page( 'hammerater', 'Hammerater', 'endre_frivillig_skjema', $screenId,
function () use ($regSheet) { DashboardView::renderVolunteerDashboard($regSheet); } );
add_action("load-$pageId", function() use ($regSheet, $pageId, $screenId) {
wp_enqueue_script('postbox');
add_screen_option('layout_columns', array('max' => 2, 'default' => 2) );
do_action("add_meta_boxes_$screenId", null); // allow third parties to hook into this.
do_action('add_meta_boxes', $screenId, null); // allow third parties to hook into this.
});
add_action("add_meta_boxes_$screenId", function () use ($regSheet) { DashboardView::registerMetaboxes($regSheet); });
});
}
});
}
class DashboardView
{
const screen_id = 'frivillig-liste';
private static function includeAdminHeader()
{
require_once( ABSPATH . 'wp-admin/admin.php');
require_once( ABSPATH . 'wp-admin/includes/dashboard.php');
require_once( ABSPATH . 'wp-admin/admin-header.php');
wp_dashboard_setup();
wp_enqueue_script( 'dashboard' );
add_thickbox();
do_action( 'add_meta_boxes' );
if ( wp_is_mobile() ) {
wp_enqueue_script( 'jquery-touch-punch' );
//wp_dequeue_script('jquery-migrate');
}
wp_enqueue_script( 'datatables', '//cdn.datatables.net/1.10.16/js/jquery.dataTables.js');
wp_enqueue_style( 'datatables', '//cdn.datatables.net/1.10.16/css/jquery.dataTables.css');
wp_enqueue_script( 'datatables-responsive', '//cdn.datatables.net/responsive/2.2.1/js/dataTables.responsive.min.js');
wp_enqueue_style( 'datatables-responsive', '//cdn.datatables.net/responsive/2.2.1/css/responsive.dataTables.min.css');
wp_enqueue_script( 'datatables-row-group', '//cdn.datatables.net/rowgroup/1.0.2/js/dataTables.rowGroup.min.js');
wp_enqueue_style( 'datatables-row-group', '//cdn.datatables.net/rowgroup/1.0.2/css/rowGroup.dataTables.min.css');
}
static function renderVolunteerDashboard(RegistrationsSheet $regSheet) {
static::includeAdminHeader();
wp_enqueue_script('lhf-sheets');
$workTypes = get_option( 'lhfsheets_form_work_types' );
?>
<div class="wrap">
<form>
<?php
wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false );
wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false );
?>
<h1>Frivillige Hammerater</h1>
<h2 class="nav-tab-wrapper">
<a href="<?= admin_url( 'index.php?page=frivillig-liste&tab=liste' ) ?>" >Liste</a>
<a href="<?= admin_url( 'index.php?page=frivillig-liste&tab=preferanser' ) ?>">Arbeidsposter</a>
<a href="<?= admin_url( 'index.php?page=frivillig-liste&tab=info' ) ?>">Frivilliginfo</a>
</h2>
<?php
$screen = get_current_screen();
$columns = absint( $screen->get_columns() );
$columns_css = '';
if ( $columns ) {
$columns_css = " columns-$columns";
}
?>
<?php if ( $_GET['tab'] == 'liste' || ! $_GET['tab'] ) { ?>
<div id="dashboard-widgets" class="metabox-holder<?php echo $columns_css; ?>">
<div id="postbox-container-1" class="postbox-container">
<?php do_meta_boxes( $screen->id, 'main_list', '' ); ?>
</div>
</div>
<?php } ?>
<?php if ( $_GET['tab'] == 'preferanser' || ! $_GET['tab'] ) { ?>
<div id="dashboard-widgets" class="metabox-holder<?php echo $columns_css; ?>">
<div id="preferences-sortables" class="postbox-container">
<?php do_meta_boxes( $screen->id, 'preferences', ''); ?>
</div>
<div id="preferences_left-sortables" class="postbox-container">
<?php do_meta_boxes( $screen->id, 'preferences_right', ''); ?>
</div>
</div>
<?php } ?>
<?php if ( $_GET['tab'] == 'info' ) { ?>
<h3>Annen info</h3>
<?php } ?>
</form>
</div>
<?php
}
static function renderMainList($records, $status = 'registered/served/contacted') {
/** @var Frivillig $e */
?>
<div class="main">
<table id="frivillige-hammerater-<?= $status ?>" style="display:none" data-status="<?= $status ?>">
<?php foreach ($records as $e) { ?>
<tr> ... </tr>
<?php } ?>
</tbody>
</table>
</div>
<?php
}
public static function registerMetaboxes( RegistrationsSheet $regSheet ) {
if ($_GET['tab'] == 'info') { return; }
$all = $regSheet->getVolunteerRecords();
if ($_GET['tab'] == 'liste' || $_GET['tab'] === null) {
foreach (Frivillig::states() as $state) {
add_meta_box(
"volunteers-search-all",
__('Verktøy') ,
function () use ($state) { DashboardView::renderGlobalSearchMetaBox(); },
'dashboard_page_frivillig-liste',
'main_list'
);
$peopleWithState = [];
foreach ($all as $f) { if ($f->status === $state) { $peopleWithState[] = $f; } }
add_meta_box(
"volunteers-$state",
DashboardView::$stateName[$state],
function () use ($peopleWithState, $state) { DashboardView::renderMainList($peopleWithState, $state); },
'dashboard_page_frivillig-liste',
'main_list'
);
}
}
if ($_GET['tab'] == 'preferanser') {
$workTypes = get_option('lhfsheets_form_work_types');
foreach ($workTypes as $workType) {
$workers = [];
foreach ($all as $frivillig) {
$interests = preg_split('/,\s+/', $frivillig->interests);
if (in_array($workType['slug'], $interests)) {
$workers[] = $frivillig;
}
}
add_meta_box(
"volunteer-prefers-{$workType['slug']}",
$workType['description'],
function () use ($workers, $workType) { DashboardView::renderPreferences($workers, $workType); },
'dashboard_page_frivillig-liste',
'preferences'
);
}
}
}
public static function renderPreferences($workers, $workType) { ?>
<ul>
<?php foreach ($workers as $e) { ?>
<li data-id="<?= $e->id ?>"> ... </li>
<?php } ?>
</ul>
<?php
}
private static function renderGlobalSearchMetaBox() {
?> Søk: <input type="text" onkeydown="window.populateSearchFields(event)" placeholder="<?= __('i alle tabellene') ?> "> <?php
}
}
Riferimenti
https://codex.wordpress.org/Dashboard_Widgets_API