restrict to store duplicate values in mongodb

Question

I am using mongodb for my application and i am facing a problem like a field is accepting duplicate values as well which i dont want

I want to know how to restrict it
I have followed an approach by specifying unique :true for a field quesListName

var mongoose = require('mongoose'),
Schema = mongoose.Schema;

var QuestionListSchema = new Schema({
    topicName: String,
    quesList: {
        quesListName: {
            type: String,
            unique: true
        },
        by: String
    }
});

but still it is accepting the duplicate value

Any help is highly appreciated

Your `quesList` is not a list, but just an object. What kind of duplicates do you actually get? Can you make an example? — str, Aug 04 '16 at 05:54
or refer this link: http://stackoverflow.com/questions/27354834/mongoose-unique-true-not-work — chirag, Aug 04 '16 at 06:03

score 1 · Answer 1 · answered Aug 04 '16 at 05:44

1

You need to define the unique for the index:

var QuestionListSchema = new Schema({
    topicName: String,
    quesList: {
        quesListName: {
            type: String,
            index: {
              unique: true
            }
        },
        by: String
    }
});

http://mongoosejs.com/docs/api.html#schematype_SchemaType-index

answered Aug 04 '16 at 05:44

Amiram Korach

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Thanks this worked for me With this i did another mistake i.e; i havent created index for that field btw it is fixed now :) – Shikha thakur Aug 04 '16 at 08:47

restrict to store duplicate values in mongodb

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