Question

尝试创建（插入）包含数组的对象时出现此错误。

如果我删除＆＃34;停车＆＃34;包含阵列的字段一切正常！但有了它，它不起作用，我已经尝试了我能想到的一切，但我仍然不明白是什么导致了这个错误。

显然有一个问题是投射到一个数组，但它已经是一个arry，我不明白。

我插入的示例对象：

{
   "uid": "54654654",
   "firstName": "loo",
   "lastName": "laa",
   "to": "ok",
   "seat_no": "15",
   "date_departure": "2017-12-31T18:30:00.000Z",
   "date_return": "2017-12-31T18:30:00.000Z",
   "traveller": "svsbsf",
   "parking": [
      {
         "id": 1,
         "numberplate": "3554654",
         "brand": "bool",
         "model": "baa",
         "type": 1,
         "$$hashKey": "object:26"
      }
   ]
}

这是猫鼬模型

{
    uid: String,
    firstName: String,
    lastName: String,
    dob: Date,
    phone: String,
    address: String,
    profession: String,
    nationality: String,
    bloodgroup: String,

    parking: [ {
        numberplate: String,
        brand: String,
        model: String,
        type: String
    }],

我得到了这个错误：

     "errors": {
      "parking": {
         "message": "Cast to Array failed for value \"[ { numberplate: '', brand: '', model: '', type: '' },\n  { numberplate: '', brand: '', model: '', type: '' } ]\" at path \"parking\"",
         "name": "CastError",
         "stringValue": "\"[ { numberplate: '', brand: '', model: '', type: '' },\n  { numberplate: '', brand: '', model: '', type: '' } ]\"",
         "kind": "Array",
         "value": [
            {
               "numberplate": "",
               "brand": "",
               "model": "",
               "type": ""
            },
            {
               "numberplate": "",
               "brand": "",
               "model": "",
               "type": ""
            }
         ],
         "path": "parking",
         "reason": {
            "message": "Cast to string failed for value \"{ numberplate: '', brand: '', model: '', type: '' }\" at path \"parking\"",
            "name": "CastError",
            "stringValue": "\"{ numberplate: '', brand: '', model: '', type: '' }\"",
            "kind": "string",
            "value": {
               "numberplate": "",
               "brand": "",
               "model": "",
               "type": ""
            },
            "path": "parking"
         }
      }
   },
   "_message": "Ticket validation failed",
   "message": "Ticket validation failed: parking: Cast to Array failed for value \"[ { numberplate: '', brand: '', model: '', type: '' },\n  { numberplate: '', brand: '', model: '', type: '' } ]\" at path \"parking\"",
   "name": "ValidationError"
}

Answer 1

我建议您将数组项定义为单独的架构，然后定义parking字段，如下所示：

{
    uid: String,
    firstName: String,
    lastName: String,
    dob: Date,
    phone: String,
    address: String,
    profession: String,
    nationality: String,
    bloodgroup: String,
    parking: [ArrayItemTypeYouDefined]
}

有关详细信息，请参阅here。

Answer 2

请注意，当在数组中投射单个项目时出现错误时，Mongoose也可能会引发此错误。

就我而言，我使用的是正确的子方案

nestedSchema = Schema({label:String, count:{type:Number, default:Symbol()});
actualSchema = Schema({ items:[nestedSchema] });

modalOfActual.items.push({label:'hello'});

验证将失败，因为其中的项目未验证！！！！！什么都不会匹配默认值。就我而言，它是使用Symbol的默认值，但是可以是任何东西...

Mongoose错误：＆＃34;转换为数组失败，因为值＆＃34; ....＆＃34;

2 个答案: