使用mongoose查询数组返回空

Question

我需要使用mongoose和mongodb在数组字段中搜索特定的ID。 我正在使用下一个代码，但结果总是一个空数组：

我做错了什么？

//模型

const mongoose=require('mongoose');
const ObjectId=mongoose.Types.ObjectId;
const modelosAnamneseSchema = new mongoose.Schema({
    nome:{type:String, unique:true},
    perguntasAtivas:[{type:mongoose.Schema.Types.ObjectId,ref:'Perguntadeanamnese'}],
});

// pergunta de anamnese model

const mongoose=require('mongoose');
const perguntasAnamneseSchema = new mongoose.Schema({
    nome:{type:String, unique:true},
    tipopergunta:{type:mongoose.Schema.Types.ObjectId, ref:'TipoPerguntaAnamnese'},
    ativo:{type:Boolean},
    temObservacao:{type:Boolean},
    observacao:{type:String},
    created_at:{type:Date,default:Date.now},
    altered_at:{type:Date,default:Date.now}
});

module.exports=mongoose.model('Perguntadeanamnese', perguntasAnamneseSchema,'perguntasdeanamnese' );

//数据样本：

{'name':'test',
'perguntasAtivas':[
{_id: "5915bec7813317eaabd9897e", id: 2, nome: "Diabetes"},
{_id: "5915bec7813317eaabd98981", id: 5, nome: "Remédio de uso contínuo"},
{_id: "5915bec7813317eaabd9897d", id: 1, nome: "Alergias"},
{_id: "5915bec7813317eaabd98984", id: 8, nome: "Etilismo"}
]

//查询id =“5915bec7813317eaabd9897d”

const query={'perguntasAtivas._id': new ObjectId(req.params.id)};
ModeloAnamnese.find(query)
.exec( (err,data) => {
   callback(err,data,res)
})

此处，查询返回空数组