JSON to Mongoose schema

How to use it

1. Enter json input and root type name.
2. The result appears straight away and updates as you edit.
3. Copy the result, or copy a link that keeps the same values to share it.

How it is calculated

String, Number, Boolean, [T] and Mixed, with a sub-schema per nested object declared before use. A field always present and never null gets required: true; arrays do not, because Mongoose defaults them to []. Every field uses { type: X } so a key named type is not misread.

Example

Inputs: Root type name = User. Result: Generated code: import mongoose from "mongoose"; const orderSchema = new mongoose.Schema({ order_id: { type: String, required: true }, total: { type: Number, required: true }, coupon: { type: String }, }); const addressSchema = new mongoose.Schema({ city: { type: String, required: true }, postal_code: { type: String, required: true }, }); const userSchema = new mongoose.Schema({ id: { type: Number, required: true }, name: { type: String, required: true }, email: { type: String, required: true }, is_active: { type: Boolean, required: true }, balance: { type: Number, required: true }, tags: { type: [String] }, address: { type: addressSchema, required: true }, orders: { type: [orderSchema] }, }); export const User = mongoose.model("User", userSchema);; Types generated: 3; Fields: 13.

{
  "id": 1024,
  "name": "Sara Ahmed",
  "email": "sara@example.com",
  "is_active": true,
  "balance": 1520.75,
  "tags": ["vip", "riyadh"],
  "address": { "city": "Riyadh", "postal_code": "12211" },
  "orders": [
    { "order_id": "A-1", "total": 99.5, "coupon": "EID10" },
    { "order_id": "A-2", "total": 120, "coupon": null }
  ]
}

import mongoose from "mongoose";

const orderSchema = new mongoose.Schema({
  order_id: { type: String, required: true },
  total: { type: Number, required: true },
  coupon: { type: String },
});

const addressSchema = new mongoose.Schema({
  city: { type: String, required: true },
  postal_code: { type: String, required: true },
});

const userSchema = new mongoose.Schema({
  id: { type: Number, required: true },
  name: { type: String, required: true },
  email: { type: String, required: true },
  is_active: { type: Boolean, required: true },
  balance: { type: Number, required: true },
  tags: { type: [String] },
  address: { type: addressSchema, required: true },
  orders: { type: [orderSchema] },
});

export const User = mongoose.model("User", userSchema);

Limits and caveats

• Number covers whole and decimal numbers; add min or validate where needed.
• Mongoose adds _id automatically to each document and each sub-schema.