public function loadModels(Models $models, $flags = null)
{
$models = $models->filter(function ($model) {
return $model->{$this->classKey};
});
$groups = Arr::groupBy($models->toArray(), function ($model) {
return $model->{$this->classKey};
});
foreach ($groups as $modelClass => &$models) {
$keys = Arr::pluckUniqueProperty($models, $this->key);
if ($keys) {
$models = $modelClass::whereIn($this->getForeignKey(), $keys)->setFlags($flags)->loadRaw();
} else {
$models = [];
}
}
return Arr::flatten($groups);
}
/**
* @dataProvider dataGroupBy
*/
public function testGroupBy($array, $callback, $preserveKeys, $expected)
{
$this->assertSame($expected, Arr::groupBy($array, $callback, $preserveKeys));
}
