Practices for required fields? (not an issue) about reusable-custom-wordpress-meta-boxes HOT 1 OPEN

OK, let me answer my own question. :) This is my current approach:

1. inc/sample.php (or your custom file): Add custom paramater req in fields array to fields that you wish to be required and set it to true. Such as:

array( // Text Input
    'label' => 'Text Input', // 
    'desc' => 'A description for the field.', // description
    'id' => $prefix.'text', // field id and name
    'type' => 'text' // type of field
    'req' => true // CUSTOM REQ PARAMETER
),

2. meta_box.php: Get the data and set new variable (basically repeat pattern from lines 20 to 28).

$req = isset($field['req']) ? $field['req'] : null;

3. meta_box.php: Run another case/switch statement and do whatever you want to do with the results.

switch($req) {
    case 'true':
        echo' This is required.';
    break;
}

4. meta_box.php /optional/: I like to add "req" and "unreq" class to table rows to be able to do some fancy jQuery validation magic.

function meta_box_callback() {
        // Nonce
    // Begin the field table and loop
    echo '<table class="form-table meta_box">';
    foreach ( $this->fields as $field) {
        if (isset($field['req'])) { $req = 'req'; } else { $req = 'unreq'; } // required check (cibulka)
            
        if ( $field['type'] == 'section' ) {
            // req class (cibulka)
            echo '<tr class="'.$req.'">[...]</tr >';
        } else {
            // req class (cibulka)
            echo '<tr class="'.$req.'">[...]</tr>';
        }
    } // end foreach
    echo '</table>'; // end table
}

Does it make sense?

SIDENOTE (for PHP beginners like me): I like to add comments to code, that clearly state what are my edits of default library. You can cmd+F you edits easily, which is essential for debugging (you never know what you can mess up) and updating.

from reusable-custom-wordpress-meta-boxes.