Tweak Gravity Forms website field validation to insert protocol if missing (assumes http) - gets around full validation error

gistfile1.txt

// Tweak Gravity Forms website field validator to insert protocol if missing (assumes http)
// Ref: https://www.itsupportguides.com/knowledge-base/gravity-forms/gravity-forms-how-to-automatically-add-http-to-submitted-website-field-values-before-validation/
add_filter( 'gform_pre_render', 'itsg_check_website_field_value' );
add_filter( 'gform_pre_validation', 'itsg_check_website_field_value' );
function itsg_check_website_field_value( $form ) {
    foreach ( $form['fields'] as &$field ) {  // for all form fields
        if ( 'website' == $field['type'] || ( isset( $field['inputType'] ) && 'website' == $field['inputType']) ) {  // select the fields that are 'website' type
            $value = RGFormsModel::get_field_value($field);  // get the value of the field
            if (! empty($value) ) { // if value not empty
                $field_id = $field['id'];  // get the field id
                if (! preg_match("~^(?:f|ht)tps?://~i", $value) ) {  // if value does not start with ftp:// http:// or https://
                    $value = "http://" . $value;  // add http:// to start of value
                }

                $_POST['input_' . $field_id] = $value; // update post with new value
            }
        }
    }
    return $form;
}