javascript - Node Js findByIdAndUpdate 函数未在数据库中更新

Question

我通过创建 API 并在 Angular 2 服务中调用它们，根据 Nodejs 中的 id 更新产品。

routes/products.js

router.post('/:id', function(req, res, next) {

Products.findByIdAndUpdate(req.params.id, req.body, function (err, post) {
if(err){
    res.json({success: false, msg:'Failed updating products'});
  } else {
    res.json({success: true, msg:'success updating products'});

  }
});
});

这就是我传递 postman 的方式:POST 请求

{
"id":"596df0ffcb429a586ef6c0bf",
"category_id": "596ddb165314d15618795826",
"product_name":"Laysssss masala",
"product_price":5,
"product_image":"image1ddd",
"product_desc":"Yummyddsd",
"product_status":"Activedddd"
}

产品似乎保存在数据库中。

同样，当我在 Angular 下调用服务并在浏览器中尝试时，我在 broswer 中得到“产品更新成功”，但没有反射(reflect)在数据库中。

组件.ts

onSaveConfirm(event) {
if (window.confirm('Are you sure you want to save?')) {
 // var prodId = event.newData['_id']
  //console.log(event.newData)
  this.productService.productUpdate(event.newData).subscribe(data => {
    if (data.success) {
      console.log('Edited success')
      this.flashMessage.show('Product updated successfully', { cssClass: 'alert-success', timeout: 3000 });
      this.router.navigate(['/category-items']);
    } else {
      console.log('failure edited...')
      this.flashMessage.show('Something went wrong', { cssClass: 'alert-danger', timeout: 3000 });
      this.router.navigate(['/category-items']);
    }
  });
  event.confirm.resolve(event.newData);
} else {
  event.confirm.reject();
}

}

产品.service.ts

 productUpdate(products) {
var prodId = products['_id'];
console.log(products)
let prodUrl = "http://localhost:8080/products/" + prodId
let headers = new Headers();
headers.append('Content-Type', 'application/json');
let prodIdObj = JSON.stringify({ products: products })
return this.http.post(prodUrl, prodIdObj, { headers: headers })
  .map((response: Response) => response.json())
  .do(data => JSON.stringify(data))
  .catch(this.handleError);
}

Answer 1

也许你的问题在这里:

在product.service.ts中:

productUpdate(products) {
//skipped
let prodUrl = "http://localhost:8080/products/" + prodId
//skipped
}

和products.js

router.post('/:id', function(req, res, next) {

    Products.findByIdAndUpdate(req.params.id, req.body, function (err, post) {
       if(err){
           res.json({success: false, msg:'Failed updating products'});
       } else {
       res.json({success: true, msg:'success updating products'});

       }
   });
});

将其更改为:

router.post('products/:id', function(req, res, next) {

    //do something
});