更新用户配置文件时,某些信息会从db、mongodb中删除。

当我更新我的用户配置文件时,我的用户模型上位置内的字段邻近区域将被删除,这是我的用户模型,在这里您可以看到位置内的邻近区域:

const userSchema = new Schema({

  name: {
    type: String,
    required: 'Please supply a name',
    trim: true
  },
   location: {
    type: {
      type: String,
      default: 'Point'
    },
    coordinates: [{
      type: Number,
      required: 'You must supply coordinates!'
    }],
    address: {
      type: String,
      required: 'You must supply an address!'
    },
    vicinity: {
      type: String,
    },
  },
});

然后我有一个控制器来更新用户,在那里我有一个更新对象,并且附近不是三个,因为我不想更新它,我只想在寄存器上保存附近,而不是更新它:

exports.updateAccount = async (req, res) => {
  req.body.location.type = 'Point';

  const updates = {
    email: req.body.email,
    name: req.body.name,
    photo: req.body.photo,
    genres: req.body.genres,
    musicLinks: req.body.musicLinks,
    location: {
      type: req.body.location.type,
      coordinates: [
        req.body.location.coordinates[0],
        req.body.location.coordinates[1],
      ],
      address: req.body.location.address,
      // vicinity: req.body.location.vicinity,
    }
  };

  if(!updates.photo) delete updates.photo

  const user = await User.findOneAndUpdate(
    { _id: req.user._id },
    { $set: updates },
    { new: true, runValidators: true, context: 'query' }
  );
  req.flash('success', 'Updated the profile!');
  res.redirect('back');
};

但每次更新用户配置文件时,邻近字段都会被删除,同时请注意,在我为用户提交更新的表单中,邻近字段没有字段,因此它不会发送任何要更新的数据。

我猜是因为在控制器上我有一个更新对象,比如:

 location: {
      type: req.body.location.type,
      coordinates: [
        req.body.location.coordinates[0],
        req.body.location.coordinates[1],
      ],
      address: req.body.location.address,
      // vicinity: req.body.location.vicinity,
    }

以及它缺失的向量性。数据库试图保存整个location对象,因为它不在附近,所以会被删除。

如果是这样的话……我怎么跟mongo db说保留db上的值而不删除它?谢谢