无法对apollo中“array of objects”类型的属性执行变异

我正在使用graphql compose mongoose生成我的graphql模式,下面是我的mongoose模式:

const ComplainSchema = new Schema({
    entityId: {type: String, required: true},
    user: {type: UserInfoSchema, required: true},
    title: String, // standard types
    desc: String,
    state: {required: true, type: String, enum: ["DRAFT", "MODERATION", "PUBLIC", "SOLVED"]},
    attachments: [{
        url: {type: String, required: true},
        name: String,
        mimeType: String,
        attachmentId: Schema.Types.ObjectId
    }],

    createdAt: {type: Date, index: true},
    updatedAt: {type: Date, index: true},

}, {timestamps: {}})
export default mongoose.model('Complaint', ComplainSchema)

如果我在graphiql中尝试下面的突变,它可以正常工作

mutation {
  complaintUpdateById(record:{_id:"5bdd9350fe144227042e6a20", title:"ok", desc:"updated", attachments:[{name:"zied", url:"http://zied.com"}]}){
        recordId, 
        record{
            _id, 
                entityId,
                user {
                    userId,
                    userName,
                    roleInShop
                },
                title,
                desc,
                createdAt,
                updatedAt,
        attachments{
            name,
            url
        }
            }
        }

}

{
  "data": {
    "complaintUpdateById": {
      "recordId": "5bdd9350fe144227042e6a20",
      "record": {
        "_id": "5bdd9350fe144227042e6a20",
        "entityId": "5bd9b1858788f51f44ab678a",
        "user": {
          "userId": "5bd9ac078788f51f44ab6785",
          "userName": "Zied Hamdi",
          "roleInShop": "ASA"
        },
        "title": "ok",
        "desc": "updated",
        "createdAt": "2018-11-03T12:23:44.565Z",
        "updatedAt": "2018-11-05T09:02:51.494Z",
        "attachments": [
          {
            "name": "zied",
            "url": "http://zied.com"
          }
        ]
      }
    }
  }
}

如果我想把附件传给阿波罗,我不知道该怎么做,我不知道该提供哪种类型( 附件 显然不是正确的类型):

const UPDATE_COMPLAINT = gql `mutation complaintUpdateById($_id:MongoID!, $title: String!, $desc: String!, $attachments: [Attachment]
        )
    {
    complaintUpdateById(record:{_id:$_id, title:$title, desc:$desc, attachments:$attachments}){
        recordId, 
        record{
            _id, 
                entityId,
                user {
                    userId,
                    userName,
                    roleInShop
                },
                title,
                desc,
                createdAt,
                updatedAt
            }
        }
  }`

因此,在搜索正确的类型时,我对我的对象进行了一次自省,问题是,对于这个查询,我得到的附件类型为null:

{
  __type(name: "Complaint") {
    kind
    name
    fields {
      name
      description
      type {
        name
      }
    }
  }
}

以下是回应:

{
  "data": {
    "__type": {
      "kind": "OBJECT",
      "name": "Complaint",
      "fields": [
        {
          "name": "entityId",
          "description": null,
          "type": {
            "name": "String"
          }
        },
        {
          "name": "user",
          "description": null,
          "type": {
            "name": "ComplaintUser"
          }
        },
        {
          "name": "title",
          "description": null,
          "type": {
            "name": "String"
          }
        },
        {
          "name": "desc",
          "description": null,
          "type": {
            "name": "String"
          }
        },
        {
          "name": "state",
          "description": null,
          "type": {
            "name": "EnumComplaintState"
          }
        },
        {
          "name": "attachments",
          "description": null,
          "type": {
            "name": null
          }
        },
        {
          "name": "createdAt",
          "description": null,
          "type": {
            "name": "Date"
          }
        },
        {
          "name": "updatedAt",
          "description": null,
          "type": {
            "name": "Date"
          }
        },
        {
          "name": "_id",
          "description": null,
          "type": {
            "name": null
          }
        }
      ]
    }
  }
}

谷歌没有帮助,因为我不知道这个操作叫什么,我不认为这是从我发现的嵌套突变。。。