Question

我正在使用jenssegers与Laravel合作开发mongoDB。我试图总结基于Abonos.price。我有一个像这样的MongoDb文档：

`{ 
"_id" : ObjectId("594a89358b85112444002924"), 
"cliente" : "blabla", 
"tipo" : "bla bla", 
"paquete" : "bla bla", 
"date" : "2017-06-14", 
"content" : "picture", 
"cost" : NumberInt(200), 
"status" : NumberInt(2), 
"Abonos" : [
    {
        "price" : "200", `enter code here`
        "date" : "2017-06-21"
    }, 
    {
        "price" : "300", 
        "date" : null
    }
], }`

我想总结Abonos.price以获得＆＃34; 500＆＃34; （200 + 300）我在laravel控制器中有这个功能：

$result = Work::raw(function($collection){
    return $collection->aggregate(array(
       array('$unwind' => '$Abonos'),
       array('$group' => array(
           "_id" => '$_id',
            "total" => array('$sum' => '$Abonos.price')
       )),
  ));});
return $result;

但是我得到了

[{"_id":"594a95cc8b85112444002925","total":0}

而不是

[{"_id":"594a95cc8b85112444002925","total":500}"

我想$return = 500

在laravel mongodb中对数组对象求和

0 个答案: