Reply To: Force an Image/File upload to a particular directory

• iamrobertandrews

• September 17, 2021 at 12:47 pm

Barring my if conditions being off, this is my working code for now…

Big thanks for the help!!

/**
 * ==============================================================================
 *             RENAME UPLOADED USER AVATAR IMAGE FILE WITH USERNAME
 *    When an image is uploaded to Edit User form through an ACF field (field_6140a6da30a17),
 *    rename file with the username of said user.
 * ==============================================================================
 */

// 1. PASS USER_ID FROM USER-EDIT.PHP TO MEDIA UPLOADER, TO GET USERNAME FOR 
// cf. https://support.advancedcustomfields.com/forums/topic/force-an-image-file-upload-to-a-particular-directory/
// cf. https://wordpress.stackexchange.com/questions/395730/how-to-get-id-of-edit-user-page-during-wp-handle-upload-prefilter-whilst-in-med/395764?noredirect=1#comment577035_395764
add_filter('plupload_default_params', function($params) {
    if (!function_exists('get_current_screen')) {
        return $params;
    }
    $current_screen = get_current_screen();
    if ($current_screen->id == 'user-edit') {
        $params['user_id'] = $_GET['user_id'];
    } elseif ($current_screen->id == 'profile') {
        $params['user_id'] = get_current_user_id();
    }
    return $params;
    });

// 2. ON UPLOAD, DO THE RENAME
// Filter, cf. https://wordpress.stackexchange.com/questions/168790/how-to-get-profile-user-id-when-uploading-image-via-media-uploader-on-profile-pa
// p1: filter, p2: function to execute, p3: priority eg 10, p4: number of arguments eg 2
add_filter('wp_handle_upload_prefilter', 'custom_upload_filter' );
function custom_upload_filter( $file ) {
    // Working with $POST contents of AJAX Media uploader
    $theuserid = $_POST['user_id'];         // Passed from user-edit.php via plupload_default_params function
    $acffield  = $_POST['_acfuploader'];    // ACF field key, inherent in $_POST
    // If user_id was present AND ACF field is for avatar Image
    if ( ($theuserid) && ($acffield=='field_6140a6da30a17') ) {
        // Get ID's username and rename file accordingly, cf. https://stackoverflow.com/a/3261107/1375163
        $user = get_userdata( $theuserid );
        $info = pathinfo($file['name']);
        $ext  = empty($info['extension']) ? '' : '.' . $info['extension'];
        $name = basename($file['name'], $ext);
        $file['name'] = $user->user_login . $ext;
        // Carry on
        return $file;
    // Else, just use original filename
    } else {
        return $file;
    }
}