How to create a mongoose schema to accept only some discreet values

Question

Lets say I have this schema.

const mongoose = require("mongoose");
const Schema = mongoose.Schema;

const TestSchema = new Schema({
  language: {
  required: true,
  default: 'eng',
  },
});

// Compile model from schema
const TestModel = mongoose.model("Test", TestSchema);

How can I configure this schema so that language field will only accept its value as eng or hbrw. If it recievs some other value it would return an error.

I know it can be done explicitly with if else but I want to know if it can be built into the schema.

you can use `enum` property, see this question [How to Create and Use Enum in Mongoose](https://stackoverflow.com/questions/29299477/how-to-create-and-use-enum-in-mongoose) — turivishal, Sep 19 '21 at 10:36

score 0 · Accepted Answer · answered Sep 19 '21 at 11:15

This is how its done:

const mongoose = require("mongoose");
const Schema = mongoose.Schema;

const TestSchema = new Schema({
  language: {
    required: true,
    enum: ['eng', 'hbrw']
    default: 'eng',
  },
});

// Compile model from schema
const TestModel = mongoose.model("Test", TestSchema);

Enum field validates the coming data against the array of data given in enum field.

Thanks @turivishal for this solution

How to create a mongoose schema to accept only some discreet values

1 Answers1