## Active Record
### 列出全部Restaurant
~~~
$model = Restaurant::find()->orderBy('name')->all();
return $this->render('index', ['model' => $model]);
~~~
### 按Reviews数量排序
~~~
$query = Restaurant::find()
->select(['restaurant.*', 'COUNT(review.id) AS reviewsCount'])
->joinWith('reviews');
$model = $query->orderBy('reviewsCount DESC')->groupBy('restaurant.id')->all();
return $this->render('index', ['model' => $model]);
~~~
### 计算Total Rating和Average Rating
~~~
public function getTotalRating()
{
$totalRating = 0;
foreach ($this->reviews as $review) {
$totalRating += $review->rating;
}
return $totalRating;
}
public function getAverageRating()
{
return $this->totalRating / count($this->reviews);
}
~~~
### 搜索
~~~
public function actionIndex($search = null)
{
if ($search) {
//$query->where("restaurant.name like :name",[':name' => '%'.$search.'%']);
$query->where(['like', 'name', $search]);
}
}
~~~
