Question

I have a tables called users, countries, and countries_users.

The documentation states that to delete a simple relationship you perform:

// Get user foo
$u = new User();
$u->where('username', 'foo')->get();

// Get country object for Australia
$c = new Country();
$c->where('name', 'Australia')->get();

// Delete relation between user foo and country Australia
$u->delete($c);

This would remove the corresponding row from the countries_users table.

My question is, what if I have no relevant Country() object to construct?

If countries and users are a one-to-many relationship, then certainly knowing the username attribute is enough to disassociate him with a country.

All the delete functions seem to require at least two objects… What is the best way to accomplish the deletion of this type of relation using the DataMapper ORM functions?

Answer 1

Believe it or not, I was unable to remove the relationship using the code Wesley has provided.

However, this seemed to work:

$u = new User();
$u->where('id', $id)->include_related('country', 'id', TRUE, TRUE)->get();

$c = new Country();
$c->where('id', $u->country->id)->get();
$c->delete($u);