public function __get($key)
{
if (isset(SalamaData::$c[$key])) {
// $model->RelatedModel (disallowed for now)
throw new Exception("Unknown relation");
} elseif ($this->isRelation($key)) {
// $model->relation
if (!($model = $this->hasRelationData($this->getQuery()->model, $key))) {
throw new Exception("No relation found for {$model} AND {$this->getQuery()->model}->{$key}");
}
$this->evaluateLazyCall($this->getQuery());
$pk = $this->getPk();
$salama = $this->getModelInstance($model);
SalamaQuery::add($salama, $model, $key);
$map = SalamaRelation::getMap($this->getQuery()->model, $key, $salama->getQuery()->model);
$salama = $salama->where(q::$map['localkey']($this->{$map}['foreignkey']));
} else {
// $model->field
$query = $this->getQuery();
if (!isset(SalamaData::$c[$query->model][$key])) {
throw new Exception("Invalid model field/relation {$query->model}->{$key}");
}
$this->evaluateLazyCall($query);
return $query->getItem($key);
}
return $salama;
}
function setupJoin($args, $query)
{
if (count($args) == 1) {
$from = $query->model;
} else {
$from = $args[1];
}
$from_alias = $this->builder->getAlias($from, $query);
$type = 'LEFT';
foreach ($args as $key => $model) {
$model_alias = $this->builder->getAlias($model, $query);
$map = SalamaRelation::getMap($model, $from);
$model_fk = $map['foreignkey'];
$from_pk = SalamaBuild::getPk($from);
$result[] = "{$type} JOIN {$model} {$model_alias} ON {$from_alias}.{$from_pk}={$model_alias}.{$model_fk}";
$query->_involved_tables[] = array('table' => $model, 'alias' => $model_alias);
}
return $result;
}
