Locate the positions in the array of objects that do not have any objects containing a specific value for a

Currently, I am utilizing Mongoose and my schema looks something like this:

var User = new mongoose.Schema({
    registrations:[{
        fieldA: String,
        fieldB: String,
    }]
});

var UserModel = mongoose.model('User', User);

My objective is to locate all users whose registrations array does not have objects with fieldA == 'specific value'.

Answer №1

To achieve this, utilize the $ne operator along with dot notation as shown below:

UserModel.find({'registrations.fieldA': {$ne: 'specific value'}}, cb);

When applied to an array field in this manner, $ne will specifically target documents where no element within the array contains the specified value.

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