Question

当我尝试用新的对象（从xml文件解析）中插入我的对象时，我遇到了一些问题，但是我收到了以下错误：

 MongoError: exception: After applying the update to the document {_id: ObjectId('55be3c8f79bae4f80c6b17f8') , ...}, the (immutable) field '_id' was found to have been altered to _id: ObjectId('55be5f15ae
5597401724aab3')

这是我的代码：

xmlFile.product_list.product.forEach(function (product) {

                    var productEntity = new Product({
                        product_id: parseInt(product.id),
                        parent_id: parseInt(product.parent_id),
                        sku: product.sku,
                        title: product.title,
                        pricenormal: parseFloat(product.price_normal),
                        pricewholesale: parseFloat(product.price_wholesale),
                        pricewholesalelarge: parseFloat(product.price_wholesale_large),
                        pricesale: parseFloat(product.price_sale),
                        weight: parseFloat(product.weight),
                        volume: parseFloat(product.volume),
                        unittype: product.unit_type,
                        status: product.status,
                        datecreating: product.datecreating,
                        sp: product.sp,
                        guaranteeext: product.guarantee_ext,
                        used: product.used,
                        statusfull: product.status_full,
                        description: null,
                        url: null
                    });
                    items.push(productEntity);

                });


items.forEach(function (product) { //update or create new products

                    Product.findOneAndUpdate({product_id: product.product_id}, product, {upsert: true}, function (err) {
                        if (err)  return updateDBCallback(err);
                        updateDBCallback(null, 'saved');

                    });

                });

我尝试使用以下提示：

                //product._id = mongoose.Types.ObjectId(); //doesn't work
                //delete product._id // doesn't delete _id from product

但他们没有帮助。所以我不想更新我的product._id，我只是想更新其他字段。

Answer 1

尝试使用

const product = productEntity.toObject();
...
delete product._id;
...
Product.findOneAndUpdate({product_id: product.product_id}, product)

Answer 2

您可以使用此：

Product.replaceOne({ _id: 55be3c8f79bae4f80c6b17f8}, {                         
   product_id: parseInt(product.id),
   parent_id: parseInt(product.parent_id),
   sku: product.sku,
   title: product.title,
   pricenormal: parseFloat(product.price_normal),
   pricewholesale: parseFloat(product.price_wholesale),
   pricewholesalelarge: parseFloat(product.price_wholesale_large),
   pricesale: parseFloat(product.price_sale),
   weight: parseFloat(product.weight),
   volume: parseFloat(product.volume),
   unittype: product.unit_type,
   status: product.status,
   datecreating: product.datecreating,
   sp: product.sp,
   guaranteeext: product.guarantee_ext,
   used: product.used,
   statusfull: product.status_full,
   description: null,
   url: null});

node.js mongodb ..发现（不可变）字段'_id'已被更改

2 个答案: