node.js 使用 findOneAndRemove Mongoose 删除文档
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Delete document using findOneAndRemove Mongoose
提问by user2175731
I am receiving this error when trying to delete a document from the database:
尝试从数据库中删除文档时收到此错误：
Cannot GET /delete/532fa5e56f885c7fec5223b1fds
无法获取 /delete/532fa5e56f885c7fec5223b1fds
How can I successfully delete the document?
如何成功删除文档？
app.js
应用程序.js
//Delete
app.del('/delete/:id', routes.delete_offer);
routes/index.js
路线/ index.js
//Delete
exports.delete_offer = function (req,res){
Offer.findOneAndRemove({'_id' : req.params.id}, function (err,offer){
res.redirect('/newsfeed');
});
};
views/dashboard.jade
视图/dashboard.jade
- each offer in offers
div.offer.row
a(href="/offer/" + offer._id)
div.columns
div.sell_type
p=offer.type
div.small-8.columns.sell_info
p.sell_price="$" + offer.fixedPrice() + " "
p.sell_location="@ " + offer.location + " ?"
div.small-4.columns.sell_pic
p=offer.user_id
a.delete(href="/delete/" + offer._id)="Delete Offer"
回答by John Waweru
The HTTP verb your using is not correct
use app.delete("/delete/:id", routes.delete_offer);
您使用的 HTTP 动词使用不当 app.delete("/delete/:id", routes.delete_offer);
I think that should work. Cause I don't think there is no delmethod in the HTTP verb for express.js framework it mostly GET, POST, PUT, DELETEplus a few others.
我认为这应该有效。因为我认为express.js 框架的 HTTP 动词中没有del方法，它主要是GET、POST、PUT、DELETE以及其他一些方法。
回答by Duy Nguyen
If you using mongoose. You can fix file routes/index.js.
如果你使用猫鼬。您可以修复文件 routes/index.js。
//Delete
exports.delete_offer = function (req,res){
Offer.findOneAndRemove({_id : new mongoose.mongo.ObjectID(req.params.id)}, function (err,offer){
res.redirect('/newsfeed');
});
};
回答by ie2020
Notice if you use the Mongoose findByIdAndRemovefunction to retrieve and delete the object from the Model.
请注意，如果您使用 MongoosefindByIdAndRemove函数从Model.
exports.delete_offer = function(req, res) {
Offer.findByIdAndRemove(req.params.id, function(err) {
if (err)
res.send(err);
else
res.json({ message: 'Offer Deleted!'});
});
}
回答by Neil Lunn
So you have a route set up for a DELETEverb in a RESTful sense. You don't seem to be calling it that way or using it in a RESTful way.
因此，您在 RESTful 意义上为DELETE动词设置了一个路由。您似乎没有这样称呼它或以 RESTful 方式使用它。
You application should reallybe handling this as a RESTrequest, and issue status and content back as the response appropriate to what happened. Right now you are re-directing to another URL. That is not the correct approach. But If you just do not understand REST, then do it that way, but change your routeto use GETinstead.
您的应用程序应该真正将其作为REST请求处理，并将状态和内容作为对发生的事情的响应发回。现在您正在重定向到另一个 URL。这不是正确的做法。但是，如果您只是不了解 REST，那么就这样做，但更改您的路线以使用GET。
For what it is worth, once you have sorted out your usage and testing, possibly using curl or similar as was shown. Then perhaps consider using .findByIdAndRemove()instead.
对于它的价值，一旦你整理了你的使用和测试，可能使用 curl 或类似的，如图所示。那么也许可以考虑使用.findByIdAndRemove()代替。
Offer.findByIdAndRemove(req.params.id, function (err,offer){
if(err) { throw err; }
// ...
}
And then actually checking the response is what you expect before just forwarding or sending a valid or error response. Which is what you should be doing.
然后在转发或发送有效或错误响应之前实际检查响应是您所期望的。这是你应该做的。
