Add Advanced Custom Fields (ACF) Support

The following code will allow you to enable the use of Advanced Custom Fields (ACF) with the WC Vendors Pro dashboard.

/* - Courtesy of Ben Lumley - 
 * https://www.wcvendors.com/help/topic/howto-add-acf-fields-to-frontend-shop-edit/
 * 
 * This will display + save any custom fields applicable to the vendor_shop in question. 
 * Second one displays the fields, you can adjust the action it’s attached to in order  
 * to move the fields (see templates/dashboard/store-settings.php in the pro plugin for 
 *  possible actions). You could also split and display different fields in different  
 * places – see the docs for acf_form, you can select single/groups of fields.
 * http://www.advancedcustomfields.com/resources/acf_form/
 * Also possible via acf_form to alter the markup a bit to make it fit your theme.
 *
 * This code is not supported by WC Vendors, use at your own risk and at your own discretion.
*/

add_action('wcvendors_settings_after_shop_name', 'wcv_save_acf_fields');
function wcv_save_acf_fields() {
	acf_form_head();
}

add_action('wcvendors_settings_after_seller_info', 'wcv_add_acf_fields');
function wcv_add_acf_fields() {
	acf_form( array(
		'form' => false,
		'return' => false,
		'post_id' => 'user_' .get_current_user_id()
	) );
}

/*
 * If you have media upload fields (file/image), they won't work, and further, the existing 
 * branding uploaders for icon etc break. This is because acf alters the uploader init to pass a 
 * post_id, and vendor users don't have 'edit_post' capabilities, assume you guys are handling 
 * this somewhere else. This snippet adds a filter in so that if we are trying to 'edit_post' on 
 * our own published vendor store, it will be allowed - restoring media upload.
*/

add_filter('user_has_cap', 'wcv_vendor_has_cap', 99, 4);
function wcv_vendor_has_cap($allcaps, $caps, $args, $user) {
	if ($args[0] == 'edit_post') {
	$post = get_post($args[2]);
	if ($post->post_type == 'vendor_store' && $post->post_author == $user->ID) {
		$allcaps['edit_published_posts'] = true;
		}
	}
	return $allcaps;
}

Reference: https://www.advancedcustomfields.com/resources/acf_form/