Remove an object by an id in mongodb and mongoose

Question

I'm getting an error on robots.remove stating robots is not defined, But I can't possibly figure out exactly why. Please help. thank you.

mongoose.connect('mongodb://localhost/robots'); //connecting to localdb

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

    var id = req.params.id;
    console.log(id);

    robots.remove({_id:ObjectId(id)}, function(err, result){ //undefined??
        if (err) return res.status(500).send({err: 'Error: Could not delete robot'});
        if(!result) return res.status(400).send({err: 'Robot bot deleted from firebase database'});
        console.log('deleted!!!');
        res.send(result); 
    });
});

Well it's a pretty consice error as I don't need robots being "declared" anywhere. Surely you have more code than this. You should be calling somthing like robots = mongoose.model("robots"), and also after an initial declaration of that model as well. — Blakes Seven
– Blakes Seven, Commented Sep 9, 2015 at 7:09
I do have a model, which contains a schema, But where can I declare it so it links to my db, I don't precisely understand where I can declare my db on the route or server. — James Lopez
– James Lopez, Commented Sep 9, 2015 at 7:15
First you "need to " declare the model, which you seemingly already have somewhere. But the specific problem here is that you have declared this in another module and therefore "must" require that module to import the model definition or alternately call mongoose.model "again" with the same model name as defined in your local scope. The error being reported is because their is no object declared in the local scope. — Blakes Seven
– Blakes Seven, Commented Sep 9, 2015 at 7:21
That fixed the robot undefined error, but not I get an error on the same line, Robot.remove({_id: mongoose.ObjectId(id)}).exec(function(err, result) Will something like this execute the code or how would I reword it. btw thanks you've been helpful. — James Lopez
– James Lopez, Commented Sep 9, 2015 at 7:25

shan1024 · Accepted Answer · 2015-09-09 07:21:16Z

4

You have to load the user model first.

var robots  = require('../app/models/robots');//Load the model

robots.js file should look like this:

var mongoose = require('mongoose');

var robotSchema = mongoose.Schema({
//Your schema here
});

module.exports = mongoose.model('robots', robotSchema);

answered Sep 9, 2015 at 7:21

shan1024

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