[英]Mongoose, updated nested array
我的問題是:如何在嵌套的 arrays 中查詢? 我想更改嵌套在數組“usersWhoLiked”中的 object 中的鍵“likeUp”中的值。 “usersWhoLiked”嵌套在數組“comments”中我如何使用 mongoose 做到這一點?
我在下面寫的請求......不起作用,但與 StackOverflow 帖子中給出的答案非常相似: ZCCADCDEDB567ABAE643E15DCF0974E503Z update update update nested object inside an array
這是我對帶有 updateOne 的 db 的請求:
try {
const response = await Comments.updateOne(
{
productId,
comments: { $elemMatch: { usersWhoLiked: { $elemMatch: { userId } } } },
},
{
$set: { 'comments.$[outer].usersWhoLiked.$[inner].likeUp': likes.up },
},
{
arrayFilters: [{ 'outer._id': commentId }, { 'inner._userId': userId }],
}
).exec();
return res.status(201).json({ response });
} catch (err) {
console.log(err);
return res.send(err);
}
這是我正在嘗試更新的集合:
{
"_id": {
"$oid": "6307569d2308b78b378cc802"
},
"productId": "629da4b6634d5d11a859d729",
"comments": [
{
"userId": "62f29c2c324f4778dff443f6",
"userName": "User",
"date": "2022.08.25",
"confirmed": true,
"likes": {
"up": 0,
"down": 0
},
"content": {
"rating": 5,
"description": "Nowy komentarz"
},
"_id": {
"$oid": "630756b22308b78b378cc809"
},
"usersWhoLiked": [
{
"userId": "62f29c2c324f4778dff443f1",
"likeUp": true,
"_id": {
"$oid": "6307572d2308b78b378cc80e"
}
},
{
"userId": "62f29c2c324f4778dff443f2",
"likeUp": true,
"_id": {
"$oid": "6307572d2308b78b378cc80c"
}
}
]
}
],
"__v": 0
}
用於評論收集的 Mongooes 架構:
const commentSchema = new Schema({
productId: String,
comments: [
{
userId: String,
userName: String,
date: String,
confirmed: Boolean,
likes: {
up: {
type: Number,
default: 0,
},
down: {
type: Number,
default: 0,
},
},
content: {
rating: Number,
description: String,
},
usersWhoLiked: [{ userId: String, likeUp: Boolean }],
},
],
});
我想問題出在您的arrayFilters
運算符上,因為您試圖按不存在的字段_userId
進行過濾:
arrayFilters: [{ 'outer._id': commentId }, { 'inner._userId': userId }],
我設法使用以下查詢更新了likeUp
值:
db.collection.update({
_id: ObjectId("6307569d2308b78b378cc802")
},
{
$set: {
"comments.$[user].usersWhoLiked.$[like].likeUp": false
}
},
{
arrayFilters: [
{
"user._id": ObjectId("630756b22308b78b378cc809")
},
{
"like.userId": "62f29c2c324f4778dff443f1"
}
]
})
在 MongoDB 操場上試一試: https://mongoplayground.net/p/XhQMNBgEdhp
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