How to buld a nested schema working in mongoose?

Question

I want build an app on NodeJs which will analyze some information that i will input. Currently i can code for one schema. But i cant do nested. Can anybody help me through this. Thanks in advance.

var provinceSchema = new mongoose.Schema({ city: String });

Inside every city i want to put temparture, population.

Answer 1

You can create a schema for the city and add few fields that are required like as cityname, temparature, populations and so on as below.

const cityDetailsSchema = new Schema({
  cityname: {
    type: String,
    max: 24,
    required: [true, 'Please enter cityname']
  },
  temparature: {
    type: String,
    required: true
  },
  populations: {
    type: Number,
    required: true
  },
  nested: cityDetailsNestedSchema

  // you can create more fields like as above.

});

const cityDetailsNestedSchema = new Schema({
    keyName: { 
        type: String, 
        lowercase: true, 
        trim: true 
     } 
})