Get the post id as value

Hi,

You can use this code to get the post ID when registering the meta box

add_filter( 'rwmb_meta_boxes', 'your_prefix_register_meta_boxes' );

function your_prefix_register_meta_boxes( $meta_boxes ) {
    $prefix = '';
    $post_id = null;
    if ( isset( $_GET['post'] ) ) {
    $post_id = intval( $_GET['post'] );
    } elseif ( isset( $_POST['post_ID'] ) ) {
    $post_id = intval( $_POST['post_ID'] );
    }

    $meta_boxes[] = [
        ...
        'fields'     => [
            [
                'id'         => $prefix . 'field_id',
                'type'       => 'text',
                'name'       => esc_html__( 'Text Field', 'text-domain' ),
                'attributes' => [
                    'value' => $post_id
                ],
            ],
        ],
    ];
    return $meta_boxes;
}

Refer to this topic https://metabox.io/support/topic/dynamic-created-metaboxes-for-specific-pages-are-not-saving-using-only-code/.

But this feature does not support the field hidden, the following field is supported text, url, email, checkbox, radio, date, time, datetime, number. Get more details in the documentation https://docs.metabox.io/custom-attributes/.

Hi,

Get and echo the post ID on the front end – template of the plugin xxxxxx.com/docs/doc-1/ – is different from the backend when registering the meta box and custom fields.

Could you please share some screenshots (full screen) and the code that creates the meta box, custom fields where the post ID is not retrieved?

Hi,

Have you tried the code that I post above?

function confirmation_lecture_register_meta_boxes( $meta_boxes ) {
    $prefix = '';
    // Get the $post_id here
    $post_id = null;
    if ( isset( $_GET['post'] ) ) {
        $post_id = intval( $_GET['post'] );
    } elseif ( isset( $_POST['post_ID'] ) ) {
        $post_id = intval( $_POST['post_ID'] );
    }

    $meta_boxes[] = [
        'title'      => esc_html__( 'Confirmation de lecture', 'text-domain' ),
        'id'         => 'confirmation-lecture',
        'fields'     => [
            [
                'id'   => $prefix . 'testtest',
                'type' => 'text',
                'attributes' => array(
                    'value' =>  $post_id, // Here is the value who's not working
                )
            ]
        ],
    ];

    return $meta_boxes;
}