The code snippet from my post above in a more readible format:
class PlacesController extends AppController
{
var $uses = array('Place', 'Photoset');
function view($id)
{
// Get all data of this place, with recursive depth 2. So we
// will get all events that belong to this place, and all
// photosets that belong to these events. Assume that
// we don't want any Place-data in our data array, so we
// unbind the association from Event to Place.
$this->Place->Event->unbindModel(array('belongsTo' =>
array('Place')));
$place = $this->Place->find("Place.id = $id", null, null, 2);
// After the find we did above we do a second find, resulting
// in basically the same information, but please ignore this
// for the sake of the example. Here we fetch all photosets
// that belong to this place (indirectly associated via
Event).
// Assume we do want Place-data in our data array, so
// recursive depth 2 again and no unbind this time.
$photosets = $this->Photoset->findAll("Photoset.event_id =
Event.id AND Event.place_id = $id",
null, null, null, null, 2);
}
}
On 8 okt, 02:09, Tim Molendijk <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I've got problems really understanding how models are instantiated.
>
> Consider the following models:
> - Place hasMany Event (and Event belongsTo Place)
> - Event hasMany Photoset (and Photoset belongsTo Event)
>
> Then consider PlacesController:
>
> class PlacesController extends AppController
> {
> var $uses = array('Place', 'Photoset');
>
> function view($id)
> {
> // Get all data of this place, with recursive depth 2. So we
> will get all events that belong to this place,
> // and all photosets that belong to these events. Assume that
> we don't want any Place-data in our data
> // array, so we unbind the association from Event to Place.
> $this->Place->Event->unbindModel(array('belongsTo' =>
> array('Place')));
> $place = $this->Place->find("Place.id = $id", null, null, 2);
>
> // After the find we did above we do a second find, resulting
> in basically the same information, but please
> // ignore this for the sake of the example.
> // Here we fetch all photosets that belong to this place
> (indirectly associated via Event). Assume we do
> // want Place-data in our data array, so recursive depth 2
> again and no unbind this time.
> $photosets = $this->Photoset->findAll("Photoset.event_id =
> Event.id AND Event.place_id = $id", null, null, null, null, 2);
> }
>
> }
>
> THE PROBLEM:
>
> Eventually the second find (findAll) tries to access the Place field
> on an instance of the Event model (this happens in
> dboSource::queryAssociation()). This field does not exist as a result
> of the first find operation, in which the association from Event to
> Place was unbinded.
>
> If the two find operations are switched (first the photosets query,
> then the place query), everything is fine. This behavior does not look
> very logical. I've studied the source code to comprehend how CakePHP
> constructs models and deals with associations internally, but I cannot
> really get a grasp on it.
>
> Can anyone shed some light on what is happening here?
>
> Tim
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