DMZ 1.7.1 (DataMapper OverZealous Edition)

[eluser]anaxamaxan[/eluser]
To add to what TheJim has already accurately pointed out, your code could be explained like this:

Code:

$b = new Buyer();
$b->order_by('updated', 'desc')->get($limit, $offset);
$b->user->get(); //gets the user for only the first record returned by the get() above
$b->place->get(); // gets the the place for only the first record,
$b->objtype->get();  // etc

Using a simple include_related will likely do the trick in this case, e.g.:

Code:

$b = new Buyer();
$b->order_by('updated', 'desc')
  ->include_related('user',null,true,true)
  ->include_related('place',null,true,true)
  ->include_related('objtype',null,true,true)
  ->get($limit, $offset);

See also the docs section about auto-populating related objects, Setting Up Relationships in the DMZ docs.