如何对 Mongo 数据库对象数组进行批量更新,其中 json 与 id 匹配
How to do a bulk update to a Mongo DB array of objects with json matched by id
我需要使用具有 id 的对象数组更新 MongoDB 字段,需要在 JSON 对象
中使用相同的 id 更新
如果我在 MongoDB
中有这样的东西
{
_id: "adqeer32423twefds",
books : [
{
id : 111,
name: "ABC"
},
{
id : 123,
name: "ABCD"
}
]
}
我有这样的 JSON 数据要插入 Mongo
{
_id: "adqeer32423twefds",
books : [
{
id : 111,
author: "ccc"
},
{
id : 123,
author: "dddd"
}
]
}
更新后我需要 Mongo 集合中这样的最终数据
{
_id: "adqeer32423twefds",
books : [
{
id : 111,
name: "ABC",
author: "ccc"
},
{
id : 123,
name: "ABCD",
author: "dddd"
}
]
}
您可以使用 positional update to do it one by one, and batch those updates using bulkWrite
.
const data = [
{ _id: 'id1', books: [{ id: 'id1_1', author: 'author1_1' }, /* ... */] },
/* ... */
];
const bulk = [];
for (const { _id, books } of data) {
for (const { id, author } of books) {
bulk.push({
updateOne: {
filter: { _id, 'books.id': id },
update: { $set: { 'books.$.author': author } }
}
});
}
}
// Check if bulk is not empty - it will throw otherwise.
if (bulk.length > 0) db.collection.bulkWrite(bulk);
我需要使用具有 id 的对象数组更新 MongoDB 字段,需要在 JSON 对象
中使用相同的 id 更新如果我在 MongoDB
中有这样的东西{
_id: "adqeer32423twefds",
books : [
{
id : 111,
name: "ABC"
},
{
id : 123,
name: "ABCD"
}
]
}
我有这样的 JSON 数据要插入 Mongo
{
_id: "adqeer32423twefds",
books : [
{
id : 111,
author: "ccc"
},
{
id : 123,
author: "dddd"
}
]
}
更新后我需要 Mongo 集合中这样的最终数据
{
_id: "adqeer32423twefds",
books : [
{
id : 111,
name: "ABC",
author: "ccc"
},
{
id : 123,
name: "ABCD",
author: "dddd"
}
]
}
您可以使用 positional update to do it one by one, and batch those updates using bulkWrite
.
const data = [
{ _id: 'id1', books: [{ id: 'id1_1', author: 'author1_1' }, /* ... */] },
/* ... */
];
const bulk = [];
for (const { _id, books } of data) {
for (const { id, author } of books) {
bulk.push({
updateOne: {
filter: { _id, 'books.id': id },
update: { $set: { 'books.$.author': author } }
}
});
}
}
// Check if bulk is not empty - it will throw otherwise.
if (bulk.length > 0) db.collection.bulkWrite(bulk);