yii2 query的使用

yii2继承mongodb的模块

在使用查询的模块中：

可以使用Query模块查询

Query类似于mongo里面的db.col              

			$query = new Query; 
			$query = Yii::$app->mongodbquery;
			$query->limit = 10;
			$query->offset = 0;
		<span style="white-space:pre">	</span>$query->select = array("name","sku");
			$query->where = array("$where"=>"this.sku=="1111"","name"=>"1111");
			$query->orderBy = array("_id"=>SORT_ASC);
			$query->from("catalog_product");
			$product_coll = $query->all(); 
			return $product_coll;

 一定需要注意的是：在where中查询如果涉及到$where等这些字符，一定需要在前面加入$where，反斜杠的转译字符，不然会报错的！         

public function getProductCollection($from,$where=array(),$limit=10,$offset=0,$orderBy=array(),$select=array()){
			
			$query = new Query; 
			//$query = Yii::$app->mongodbquery;
			$query->limit = $limit;
			$query->offset = $offset;
			
			// array("_id"=>SORT_ASC)
			if(!empty( $orderBy)){
				$query->orderBy = $orderBy;
			}
			//$query->where = array("$where"=>"this.sku=="1111"","name"=>"1111");
			if(!empty( $where)){
				$query->where = $where;
			}
			//$query->select = array("name","sku");
			if(!empty( $select)){
				$query->select = $select;
			}
			$query->from($from);
			$product_coll = $query->all(); 
			return $product_coll;
		
		
	}