我目前正在将nodeJS与mongoose一起使用 我有这样的患者模式
var patientSchema = mongoose.Schema({
name: {
type: String,
required: true,
},
contact: {
type: String,
required: true
},
dob: {
type: Date
},
id: {
type: String,
required: true
},
gender: {
type: String
},
email: {
type: String
},
payments: {
},
diagnoses: {
},
prescriptions: {
},
appointments: {
},
job: {
type: String,
default: "Unknown"
},
address: {
type: String,
default: ""
},
images: [{
name: String,
gPatientFolderId: String,
treatment: String,
gTreatmentId: String,
childFolder: [{ //<- i would like this to output
name: String,
googleDriveChildFolderId: String
}]
}],
oldID: {
type: Number,
unique: true
},
created: {
type: Date
},
lastestEdit: {
type: Date
},
lastestAppointment: {
type: Appointment.schema
},
defaultLocation: {
type: String,
},
lastestRecord: {
type: mongoose.Schema.Types.ObjectId
}
}, {
usePushEach: true,
});
var Patient = mongoose.model('patients', patientSchema);
im尝试在此函数中将childFolder数组打印为json类型的数组
exports.addGChildFolderId = (patientId, folderNameID, childFolderName, childFolderId) => {
Patient.find(
{
'_id': patientId,
'images.gPatientFolderId': folderNameID,
}
).select('images.$.childFolder -_id').lean().exec(function (err, docs) {
console.log('%j', docs)
});
}
输入的是患者_id（患者ID）和图像gPatientFolderId（folderNameID）
我想console.log一个特定的childFolder json数组，所以我将find（）与select（）和lean（）一起使用
当前正在使用的文档为例：
{
"_id":"5cc26b81ea0b841b2a8723a1",
"lastestEdit":"2019-05-03T07:02:53.251Z",
"name":"linh",
"contact":"0923123",
"dob":"2019-04-11T17:00:00.000Z",
"gender":"M",
"id":"PW3933059352",
"oldID":1004144,
"email":"linh@gmail.com",
"created":"2019-04-26T02:22:56.978Z",
"images":[
{
"name":"PW3933059352-20190503-linh-0923123-1556866574",
"treatment":"beauty",
"_id":"5ccbe60e47dcfc3b110236fd",
"childFolder":[
{
"name":"Trước",
"_id":"5ccbe60e47dcfc3b11023700"
},
{
"name":"Sau",
"_id":"5ccbe60e47dcfc3b110236ff"
},
{
"name":"X-Quang",
"_id":"5ccbe60e47dcfc3b110236fe"
}
],
"gTreatmentId":"15Rs5Sj3TlfWG3cdPQXe8RwKLtJEJYyMG",
"gPatientFolderId":"1B9xGcl3JjesaIch2IH9paAMZ2H_I1Y2d"
},
{
"name":"PW3933059352-20190503-linh-0923123-1556866603",
"treatment":"tooth_removal",
"_id":"5ccbe62b8d5de53b3ddb8973",
"childFolder":[
{
"name":"Trước",
"_id":"5ccbe62b8d5de53b3ddb8976"
},
{
"name":"Sau",
"_id":"5ccbe62b8d5de53b3ddb8975"
},
{
"name":"X-Quang",
"_id":"5ccbe62b8d5de53b3ddb8974"
}
],
"gTreatmentId":"1ZcVv5mwDPtQBnbrUCSVPnv3U3vcN0wF6",
"gPatientFolderId":"1yVUFmQfR3suEBcJFmeNbbZIjSJJzoYsE"
},
{
"name":"PW3933059352-20190503-linh-0923123-1556866628",
"treatment":"invisalign_invitechnager",
"_id":"5ccbe644b6ad703b69cb01cc",
"childFolder":[
{
"name":"Trước",
"_id":"5ccbe644b6ad703b69cb01cf"
},
{
"name":"Sau",
"_id":"5ccbe644b6ad703b69cb01ce"
},
{
"name":"X-Quang",
"_id":"5ccbe644b6ad703b69cb01cd"
}
],
"gTreatmentId":"1GGiWRylvJ-QE3c1sIWupg8DQr8p1ktaP",
"gPatientFolderId":"1RA_KeAQDmeUYWbpx1kcBvOcr8xiaxXmn"
},
{
"name":"PW3933059352-20190503-linh-0923123-1556866676",
"treatment":"gummy_smile_surgery",
"_id":"5ccbe674472b0b3b9a221cd7",
"childFolder":[
{
"name":"Trước",
"_id":"5ccbe674472b0b3b9a221cda"
},
{
"name":"Sau",
"_id":"5ccbe674472b0b3b9a221cd9"
},
{
"name":"X-Quang",
"_id":"5ccbe674472b0b3b9a221cd8"
}
],
"gTreatmentId":"1UQoz3fvsPcOKl-rt_k5KHOw_hG00rmAO",
"gPatientFolderId":"12mNoT2m3IEpU8C7_dqbw9icrynjO12fH"
},
{
"name":"PW3933059352-20190503-linh-0923123-1556866972",
"treatment":"orthodontic",
"_id":"5ccbe79cde26d23c7f15abde",
"childFolder":[
{
"name":"Trước",
"_id":"5ccbe79cde26d23c7f15abe1"
},
{
"name":"Sau",
"_id":"5ccbe79cde26d23c7f15abe0"
},
{
"name":"X-Quang",
"_id":"5ccbe79cde26d23c7f15abdf"
}
],
"gTreatmentId":"1v9WE4Z_C9WK-o3FGghLVn-Nju7RkHtd2",
"gPatientFolderId":"133NoFIFyA9M71HlefynRTfuxTd3rsE1H"
}
],
"address":"hanoi",
"job":"Sinh viên",
"__v":142,
"lastestAppointment":null
}
我目前从该函数获得的输出：
[
{
"images":[
{
"name":"PW3933059352-20190503-linh-0923123-1556866972",
"treatment":"orthodontic",
"_id":"5ccbe79cde26d23c7f15abde",
"childFolder":[
{
"name":"Trước",
"_id":"5ccbe79cde26d23c7f15abe1"
},
{
"name":"Sau",
"_id":"5ccbe79cde26d23c7f15abe0"
},
{
"name":"X-Quang",
"_id":"5ccbe79cde26d23c7f15abdf"
}
],
"gTreatmentId":"1v9WE4Z_C9WK-o3FGghLVn-Nju7RkHtd2",
"gPatientFolderId":"133NoFIFyA9M71HlefynRTfuxTd3rsE1H"
}
]
}
]
它仍然可以打印出具有所有属性的图像，但是我只想要childFolder数组。
我应该如何修复该功能？