PHP code example of grottopress / wordpress-meta-box

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

grottopress / wordpress-meta-box example snippets

declare (strict_types = 1);

namespace Vendor\Package;

use GrottoPress\WordPress\MetaBox;
use WP_Post;

class MyAwesomeMetaBox
{
    public function setUp()
    {
        \add_action('add_meta_boxes', [$this, 'add'], 10, 2);
        \add_action('save_post', [$this, 'save']);
        \add_action('edit_attachment', [$this, 'save']);
    }

    /**
     * @action add_meta_boxes
     */
    public function add(string $post_type, WP_Post $post)
    {
        if (!($box = $this->box($post))) {
            return;
        }

        $this->metaBox($box)->add();
    }

    /**
     * @action save_post
     * @action edit_attachment
     */
    public function save(int $post_id)
    {
        if (!($box = $this->box(\get_post($post_id)))) {
            return;
        }

        $this->metaBox($box)->save($post_id);
    }

    /**
     * Define your meta box with the `box` method
     */
    private function box(WP_Post $post): array
    {
        // if (\is_post_type_hierarchical($post->post_type)) {
        //     return [];
        // }

        return [
            'id' => 'my-meta-box-1',
            'title' => \esc_html__('My Meta box'),
            'context' => 'side',
            'priority' => 'default',
            'screen' => 'page',
            // 'callback' => function ($arg) {}, // If set, 'fields' is ignored
            // 'callbackArgs' => [], // Passed as `$arg` to 'callback' above. Required if 'callback' is set.
            // 'saveCallback' => function ($post_id, $arg) {}, // Save with this callback instead of default. Required if 'callback' is set.
            // 'saveCallbackArgs' => [], // Passed as `$arg` to 'saveCallback' above.
            'fields' => [ // See https://github.com/grottopress/wordpress-field
                [ // Field 1
                    'id' => 'my-meta-box-field-1',
                    'type' => 'select',
                    'choices' => [
                        'left' => \esc_html__('Left'),
                        'right' => \esc_html__('Right'),
                    ],
                    'label' => \esc_html__('Select direction'),
                    'labelPos' => 'before_field', // or 'after_field'
                    'sanitizeCallback' => 'sanitize_text_field'
                ],
                [ // Field 2
                    'id' => 'my-meta-box-field-2',
                    'type' => 'text',
                    // ...
                ]
            ],
            'notes' => '<p>'.\esc_html__('Just a super cool meta box example').'</p>',
        ];
    }

    private function metaBox(array $args): MetaBox
    {
        return new MetaBox($args);
    }
}

// Add your meta box to WordPress
$myMetaBox = new MyAwesomeMetaBox();
$myMetaBox->setUp();

// ...
public function box(WP_Post $post)
{
    return [
        [ // Meta box 1
            'id' => 'meta-box-1',
            'context' => 'normal',
            'fields' => [
                [ // Field 1 

                ],
                [ // Field 2

                ]
            ],
            // ...
        ],
        [ // Meta box 2
            'id' => 'meta-box-2',
            'context' => 'side',
            // ...
        ],
        // ...
    ];
}

// ...
public function add(string $post_type, WP_Post $post)
{
    if (!($boxes = $this->box($post))) {
        return;
    }

    foreach ($boxes as $box) {
        $this->metaBox($box)->add();
    }
}

// ...
public function save(int $post_id)
{
    if (!($boxes = $this->box(\get_post($post_id)))) {
        return;
    }

    foreach ($boxes as $box) {
        $this->metaBox($box)->save($post_id);
    }
}