Inserting arrays in submission from frontend form

This topic has 1 reply, 2 voices, and was last updated 3 years, 9 months ago by Long Nguyen.

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December 9, 2020 at 4:19 PM #23496

Participant

Hi, I have this situation: I want to create a form that can be submitted from front end, but among my fields I have a list field with values loaded dynamically from a array.
If I look at the changes from the backend everything is ok, but if I look at the form from the frontend the field remains empty.

Please see the example:

$myArray = array('first', 'second', 'third');

if ($myArray) {
    $mylist = array_combine($myArray, array_values($myArray));
} else {
    $mylist = null;
}

add_filter( 'rwmb_meta_boxes', 'prefix_register_meta_boxes' );
function prefix_register_meta_boxes( $meta_boxes ) {
    $meta_boxes[] = array(
        'title'      => 'Personal Information',
        'post_types' => 'post',
        'id'         => 'myform',

        'fields' => array(
           array(
                'name'    => 'List',
                'id'      => 'MyList',
                'type'    => 'checkbox_list',
                
                'options' => $mylist,
            ),
        )
    );

    return $meta_boxes;
}

I use this shortcode on the page
[mb_frontend_form id="myform"]

December 9, 2020 at 9:45 PM #23500

Long Nguyen

Moderator

Hi,

The variable $mylist in the function prefix_register_meta_boxes() refers to a local version of the $mylist variable, and it has not been assigned a value within this scope so it will not render the list options.

You can move the variable $myArray and $mylist into the function prefix_register_meta_boxes() to make it works.

add_filter( 'rwmb_meta_boxes', 'prefix_register_meta_boxes' );
function prefix_register_meta_boxes( $meta_boxes ) {
    $myArray = array('first', 'second', 'third');

    if ($myArray) {
        $mylist = array_combine($myArray, array_values($myArray));
    } else {
        $mylist = null;
    }
    $meta_boxes[] = array(
        'title'      => 'Personal Information',
        'post_types' => 'post',
        'id'         => 'myform',

        'fields' => array(
           array(
                'name'    => 'List',
                'id'      => 'MyList',
                'type'    => 'checkbox_list',
                
                'options' => $mylist,
            ),
        )
    );

    return $meta_boxes;
}

Or use the global keyword. Get more details in the documentation https://www.php.net/manual/en/language.variables.scope.php.

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