CODEWITHSUNDEEP
javascriptnode.jsmongodbexpress
Akash Pise
Akash Pise

Reputation: 98

how can we create autogenerated custom user id in Express js with mongodb

In my documents, I have 3 fields in that docs and now I want to create sequential user id which is auto-generated like we set joining_id as the prefix for all user id prefix then all user id start with that prefix like user 1 id is = joining_id1, user 2 id is = joining_id2 so on .... like this

my code is

const tourSchema = new mongoose.Schema({
    name: {
        type: String,
        required: [true, 'A User must have name'],
        unique: true
    },
    joining_id: {
        type: String
    },
    reffral_id: {
        type: Number,
        required: [true, 'A user must have a Reffral Id']
    }
});

Upvotes: 0

Views: 909

Answers (1)

Sandip Dhang
Sandip Dhang

Reputation: 285

My opinion is before store user query to your database and gets the length of your current collection then add 1 to that length.

const addUser = async () => {
   const totalUsers = await db.collection.count();
   
   const newUser = {
      _id: `joining_id${totalUsers + 1}`,
      ...other keys
   }

   const user = await db.collection.insertOne(newUser)

}

May be this will help.

Upvotes: 1

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