我有一个api上传一堆图像，我想要一个不同的api，我可以在其中通过multer编辑图像

Question

///我想制作一个可以在其中编辑图像数组的api。例如，我为特定字段上传了5张图像，然后我想要编辑该图像，例如从5张图像中删除3张图像并添加3张新图像，而前2张应保持不变。

///我尝试了传统方法来更新图像，但是所有图像都被覆盖。因此，之前的5张图片将被删除并获得新的3张图片，但是我希望保留新的3张图片和之前的2张图片。

//添加数据的功能。

const setData = (req, res) => {

  console.log(req.body);
  if (!req.files) res.send({ success: 0, msg: "Please upload a valid image" });

  const newProperty = {
    userid: req.body.userid,
    address: req.body.address,
    price: req.body.price,
    bedroom: req.body.bedroom,
    bathroom: req.body.bathroom,
    livingroom: req.body.livingroom,
    propertytype: req.body.propertytype,
    propertynumber: req.body.propertynumber,
    streetname: req.body.streetname,
    city: req.body.city,
    images: req.files.images,
    floorPlanImages: req.files.floorPlanImages,
    epcImages: req.files.epcImages,
    country: req.body.country,
    postalcode: req.body.postalcode,
    description: req.body.description
  };

  Property.create(newProperty, (err, property) => {
    if (err) sendError(req, res, err);
    else {
      sendData(req, res, property);
    }
  });
};

//以未决状态将属性存储在数据库中。

router.post(
  "/api/addProperty",

  upload.fields([
    {
      name: "images",
      maxCount: 10
    },
    {
      name: "floorPlanImages",
      maxCount: 10
    },
    {
      name: "epcImages",
      maxCount: 10
    }
  ]),
  (req, res) => {
    setData(req, res);
  }
);

//用于编辑数据的功能。

 const editData = (req, res, id) => {
      if (!req.files) res.send({ success: 0, msg: "Please upload a vaalid image" });
      Property.findOne({ _id: id }).then(Property => {
        Property.address = req.body.address;
        Property.price = req.body.price;
        Property.bedroom = req.body.bedroom;
        Property.bathroom = req.body.bathroom;
        Property.livingroom = req.body.livingroom;
        Property.propertytype = req.body.propertytype;
        Property.propertynumber = req.body.propertynumber;
        Property.streetname = req.body.streetname;
        Property.city = req.body.city;
        property.images = req.files.images;
        property.floorPlanImages = req.files.floorPlanImages;
        property.epcImages = req.files.epcImages;
        Property.country = req.body.country;
        Property.postalcode = req.body.postalcode;
        Property.description = req.body.description;

        Property.save()
          .then(updated => {
            res.send(200).json(updated);
          })
          .catch(err => {
            res.send(err);
          });
      });
    };

//编辑属性表单

router.post(
  "/api/editProperty",
  upload.fields([
    {
      name: "images",
      maxCount: 10
    },
    {
      name: "floorPlanImages",
      maxCount: 10
    },
    {
      name: "epcImages",
      maxCount: 10
    }
  ]),
  (req, res) => {
    editData(req, res, req.body.id);
  }
);

So , i want to to edit the images in such a way that if there is 5 images and i remove 3 image and add 3 new , the previous 2 should stay there.