Mongoose returns undefined for an existing field

Question

After a mongoose request I have my document doc which is the result of the query

Here is the schema used

var searchSchema = new mongoose.Schema({
    original : String,
    images : [String],
    image: String
});

The model :

var searchModel = mongoose.model('Search', searchSchema);

Code used:

searchModel.findOne({original : input}, function (err, doc) {
    if (err) {
        console.log(err);
    }
    if (typeof doc !== "undefined") {
        console.log(doc);
                    console.log(doc.image);
    }
});

The first console.log:

{ 
    _id: 531401bf714420359fd929c9,
    image: 'http://url.com/image.jpg',
    original: 'lorem ipsum dolor sit amet' 
}

The second returns undefined, but the previous one does show an existing image property, which means that it exists.

My schema doesn't have anything special so I don't understand what may be happening here..

score 9 · Accepted Answer · answered Mar 03 '14 at 13:34

9

You'll see this when you haven't added the field to your schema.

Add image to your schema and it should work:

image: String

answered Mar 03 '14 at 13:34

JohnnyHK

305,182
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It already is. I tried deleting all my documents, changing the field name and checking to be sure it is in the schema, then re adding everything, and while the property is there (and I can even select it in my queries) it is undefined when I try to access it, strangely – nialna2 Mar 03 '14 at 13:52
@Malharhak Can you update your question to include the code that defines the schema and model and performs the query that creates `doc`? – JohnnyHK Mar 03 '14 at 13:56
Ok never mind I have a versioning bug so my schema didn't have the right property. – nialna2 Mar 03 '14 at 17:37
I could kiss you (but I wont :) )! – tonyedwardspz Apr 08 '17 at 10:51

Aryeh Armon · Answer 2 · 2017-03-12T17:25:45.510

0

This is do to the fact that the toString() method of the object returns the _doc property. You can use: console.log(doc._doc.image);

edited Mar 12 '17 at 17:25

answered Mar 06 '17 at 10:37

Aryeh Armon

2,137
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score 0 · Answer 3 · answered Feb 16 '21 at 07:37

0

I had the same error, but accessing the property like this doc[0].image works fine.

answered Feb 16 '21 at 07:37

Justin Herrera

526
4
11

inwpitrust · Answer 4 · 2014-03-03T10:17:39.083

-1

Try to use the bracket notation like that:

doc['image']

If it works, I'm not able to explain you why, but maybe someone could shed some light on this?

edited Mar 03 '14 at 10:17

answered Mar 03 '14 at 09:29

inwpitrust

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Yes I did try that but it didn't change anything – nialna2 Mar 03 '14 at 13:02
Can you provide the query you're doing? – inwpitrust Mar 03 '14 at 13:33
I added informations about the schema/model/query in the question – nialna2 Mar 03 '14 at 16:49
doc.image and doc['image'] is the same thing. please see my answer explaining why this happens. – Aryeh Armon Mar 06 '17 at 10:38

Mongoose returns undefined for an existing field

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