How do you get a certain value from the mongodb?nodejs base?

[Saumya]

Hello, everyone. I've got some data in mongodb:

{
   "_id": "56647d86d9742e5c1cce4023",
   "longurl": "http://mongoosejs.com/docs/index.html",
   "shorturl": "KoQrG",
   "__v": 0
}

And there's a ghet's request:

app.get('/url/:url', function(req,res){
    urls.find({shorturl : req.params.url}, function(err,result){ //urls - это сама база с данными.
        if (err) res.json(err);
        else res.redirect(result.longurl); //вот тут я хочу перейти на другую страницу
    });
});

So that's how I'm trying to get there, I'm writing.

Cyclical cross-referencing on this page

Just trying to do that. res.send(result.longurl)♪ but it doesn't turn anything away ♪ res.send(result)it removes all the values of this field (_id, longurl,shorturl,_v). But I have to turn to the longurl and take his meaning. How do you do that? Thank you.

[nishika]

Reason

What's that?

result - the mass,
result[0] - The first document found,
result[0].longurl - full web page of the first document

Where the cycling is from

result.longurl = undefined♪ it turns into a change ♪ '', treated as a browser as a relative address, and understood as a " front page " . Brauser's asking for the current page and getting a recount on it. It's a cyclical resection.

Which helped to get confused.

You've been misrepresented by design. res.send(result)♪

result - a mass of one element, res.send() leads him to the line. {}by deleting the square brackets of the mass. If they were used res.json() - He'd be bringing him in. [{}] And you'd find a mistake right away.

Decision

User https://ru.stackoverflow.com/questions/472407/%d0%9a%d0%b0%d0%ba-%d0%b2%d0%b7%d1%8f%d1%82%d1%8c-%d0%be%d0%bf%d1%80%d0%b5%d0%b4%d0%b5%d0%bb%d0%b5%d0%bd%d0%bd%d0%be%d0%b5-%d0%b7%d0%bd%d0%b0%d1%87%d0%b5%d0%bd%d0%b8%d0%b5-%d0%b8%d0%b7-%d0%b1%d0%b0%d0%b7%d1%8b-mongodbnodejs#comment531186_472407 You're right. In your place:

res.redirect(result.longurl);// = undefined

You have to do this:

res.redirect(result[0].longurl);// = "http://mongoo..."