CODEWITHSUNDEEP
node.jsmongoose
Michael
Michael

Reputation: 721

Mongoose find/findOne always returns null when filter is added

I have problem which has seriously been bothering for the past few days. I have mongoose setup for a nodejs project I have defined all the schemas and models as shown below

var studentSchema = new Schema({
    fullname: {type: String, required: true},
    student_id: {type: String, required: true, unique: true},
    votingNo: {type: Number, required: true, unique: true},
    voted: {type: Boolean, required: true, default: false}
});
var Student = mongoose.model('Student', studentSchema, 'student');

I have exported the model and i'm using it in another module. whenever I try query for results like so:

 model.Student.find({}, function (err, students) {
    console.log(err);
    console.log(students);
});

I get results. But the moment I add a filter, like so:

model.Student.find({student_id: studentId}, function (err, students) {
    console.log(err);
    console.log(students);
});

The result is always an empty array.

I've tried using findOne() but it's always returning null.

Upvotes: 3

Views: 2212

Answers (1)

QoP
QoP

Reputation: 28397

Try to call the queries like this

var Student = mongoose.model('Student');
Student.find({}, function (err, students) {
     console.log(err);
     console.log(students);
});

If it doesn't work, add this before your call to be sure that the database is open.

var mongoose = require('mongoose');
console.log(mongoose.connection.readyState); // Should not return 0

Hope it helps!

Upvotes: 1

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