在Nestjs中使用class-validator验证嵌套对象

npm install class-validator class-transformer

import { IsNotEmpty, ValidateNested } from 'class-validator';
import { Type } from 'class-transformer';

class NestedObject {
  @IsNotEmpty()
  property1: string;

  @IsNotEmpty()
  property2: string;
}

export class MainObject {
  @ValidateNested()
  @Type(() => NestedObject)
  nestedObject: NestedObject;
}

import { Controller, Post, Body } from '@nestjs/common';
import { validate } from 'class-validator';
import { MainObject } from './your-dto-file';

@Controller('your-route')
export class YourController {
  @Post()
  async yourMethod(@Body() mainObject: MainObject) {
    const errors = await validate(mainObject);
    if (errors.length > 0) {
      // 处理验证失败的情况
    } else {
      // 验证通过，执行相应的逻辑
    }
  }
}