Control: Textarea - 10quality/wpmvc-addon-metaboxer GitHub Wiki

class Post extends Model
{
    // Class properties and methods...

    protected function init()
    {
        $this->metaboxes = [
            'metabox_id' => [
                'tabs' => [
                    'tab_id' => [
                        'fields' => [

                            'textarea_field' => [
                                'type' => 'textarea',
                                'title' => __( 'Textarea' ),
                                'description' => __( 'Textarea description.' ),
                                'control' => [
                                    'wide' => true,
                                    'attributes' => [
                                        'placeholder' => __( 'Description', 'my-domain' ),
                                        'rows' => 5,
                                    ]
                                ],
                            ],

                            // Other fields...
                        ],
                    ],
                ],
            ],
        ];
    }
}