DMZ 1.7.1 (DataMapper OverZealous Edition)

[eluser]OverZealous[/eluser]
[quote author="macigniter" date="1273681608"]I got a question which I am sure was answered here before. But since the search function in this forum isn't that great *duck* I am asking it here:[/quote]

Did you try the search in the manual? It searches these forums as well. It's backed by Google™

Is there an easy way of detecting whether a dataset is related to any other table as defined in the models?

Why don't you just write an extension. All the relationships are stored in the $has_one and $has_many arrays. Simply loop through the keys on those arrays, and do your count checks. Note that is_related_to already exists, so it might be confusing to call it is_related.

Code:

function is_related_to_anything($object) {
    $result = FALSE;
    foreach(array($object->has_one, $object->has_many) as $arr) {
        foreach($arr as $rel => $props) {
            $result = $object->{$rel}->count() > 0;
            if($result) {
                break;
            }
        }
        if($result) {
            break;
        }
    }
    return $result;
}

Wrap that up in an extension, and you can share it with others, as well as use it on any model you want.