To delete a variable from req.body in NodeJS ExpressJS

Question

I receive a JSON with lot of information but I want to delete a particular data, for example, if I receive the variable name, I want to remove this variable before adding my JSON in my Database. This is my function POST:

app.post("/:coleccion", function (req, res, next) {
POST
    if(req.body.name)
            // Here I need delete "name" if I receive this variable <------
    req.collection.insert(req.body, {}, function (e, result) {
        if(e) return next(e);
        res.send(result);
    });
});

does your destination collection have the attribute too?¿ if not, it should not be saved by default. — Alejandro Teixeira Muñoz, May 12 '15 at 10:24
possible duplicate of [How to remove a property from a JavaScript object](http://stackoverflow.com/questions/208105/how-to-remove-a-property-from-a-javascript-object) — Alejandro Teixeira Muñoz, May 13 '15 at 08:11

score 11 · Accepted Answer · edited May 23 '17 at 12:14

11

delete req.body.name

should work in a javascript object

check How do I remove a property from a JavaScript object?

edited May 23 '17 at 12:14

Community

1
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answered May 12 '15 at 10:26

Alejandro Teixeira Muñoz

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score 5 · Answer 2 · answered May 13 '15 at 08:17

I would urge you to only pick the properties that you actually want instead of just removing the ones you don't. Otherwise the client could send in anything it wanted, including fields starting with $ which will get special treatment by MongoDB.

This is the easiest way to do this:

var data = {
  email: req.body.email,
  age: req.body.age,
  gender: req.body.gender
}

req.collection.insert(data, ...)

You could also use Underscore.js to do the job:

var data = _.pick(req.body, 'email', 'age', 'gender')

req.collection.insert(data, ...)

To delete a variable from req.body in NodeJS ExpressJS

2 Answers2