javascript - 对路径 '_id' 执行更新将修改不可变字段 '_id'

Question

这个问题已经有答案了:

node.js mongodb .. the (immutable) field '_id' was found to have been altered (5 个回答)

已关闭 4 年前。

我正在尝试更新 mongo 数据库中的字段。但是，我收到了空心错误。

MongoError: Performing an update on the path '_id' would modify the immutable field '_id'

我的代码要更新。

app.put("/api/inventory/:sku", (req, res, next) => {
  const inventory = new Inventory({
    _id: req.body.id,
    sku: req.body.sku,
    total_qty: req.body.total_qty,
    current_qty: req.body.current_qty
  });
  Inventory.updateOne({ sku: req.params.sku }, req.body).then(result => {
    res.status(200).json({ message: "Update successful!" });
  });
});

Answer 1

看来您只需要更新一条 Inventory 记录。您可以简单地执行以下操作:

app.put("/api/inventory/:sku", (req, res, next) => {
  return Inventory.updateOne(
    { sku: req.params.sku },  // <-- find stage
    { $set: {                // <-- set stage
       id: req.body.id,     // <-- id not _id
       sku: req.body.sku,
       total_qty: req.body.total_qty,
       current_qty: req.body.current_qty
      } 
    }   
  ).then(result => {
    res.status(200).json({ message: "Update successful!" });
  });
});

无需创建新的库存等，因为您只需根据sku更新现有库存即可

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