Nestjs - What is the correct way to create a DTO file to transform a nested json object?

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I am trying to create a DTO file to transform the values and save a Document. 

export class CreateProductDto {
  readonly pricing: {
    readonly list: number;
  } 
}

async create(@Body() createProductDto: CreateProductDto) {
  console.log(createProductDto);
  console.log(createProductDto.pricing.list); 
}

import * as mongoose from 'mongoose';

export const ProductSchema = new mongoose.Schema({
  pricing: {
    list: {
      type: Number,
    },
  },
});

But the value of princing.list is undefined.

What is the correct way to do this in NestJS?

nestjs node.js dto javascript
1 Answers

Please go through this documentation in your case your dto is going to be

import { IsNumber, IsObject } from 'class-validator';
import { Type } from 'class-transformer';
export class ListDto {
  @IsNumber()
  readonly list: number
}

export class CreateProductDto {
  @IsObject()
  @ValidateNested() @Type(() => ListDto)
  readonly pricing: ListDto
}

in your main.ts

import { ValidationPipe } from '@nestjs/common';
app.useGlobalPipes(new ValidationPipe());
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