mongoose callback is not an array

Question

In my models I have this

module.exports.getPhotosById = function(userId,callback){
    Photos.findOne({userId:userId},callback);
}

Then in route I do

 Photo.getPhotosById(req.user._id,function(err,result){

    console.log(result);
    console.log(result.length);
  });

The first console output this

{ _id: 325657865435643245,
  userId: '32443564',
  photo: 'abc.jpg',
  caption: 'abc'
}

but why it's not an array? because the second console's output is undefined.

JohnnyHK · Accepted Answer · 2016-08-07 15:54:11Z

2

result is a single document instead of an array because you're calling findOne, not find.

To get all of a user's photo docs, change your method to:

module.exports.getPhotosById = function(userId, callback){
    Photos.find({userId: userId}, callback);
}

answered Aug 7, 2016 at 15:54

JohnnyHK

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Comments

Meena · Accepted Answer · 2016-08-07 15:55:37Z

0

findone Returns one document(JSON) that satisfies the specified query criteria

find Returns the array of Objects.

answered Aug 7, 2016 at 15:55

Meena

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