No with DataAssist, you need to do it manually.
Here is an easy trick though:
When you bind the checkboxs in the insert or update wizard, it will include the brackets at the end of the name:
<?php echo((isset($_POST["checkboxName[]"]))?$_POST["checkboxName[]"]:"") ?>
remove them:
<?php echo((isset($_POST["checkboxName"]))?$_POST["checkboxName"]:"") ?>
then add the following code at line 1 of the page:
<?php
if($_SERVER["REQUEST_METHOD"] == "POST") {
foreach($_POST as $key => $val) {
if(is_array($_POST[$key])) $_POST[$key] = implode(", ", $_POST[$key]);
}
}
?>