我有一个名为“problems”的服务，它处理CRUD操作。现在，在服务中，当我想保存一个文档时，我有这个错误：

ValidationError: Problem validation failed: creator: Path `creator` is required., description: Path `description` is required., title: Path `title` is required.

字符串
这是我的schema：

import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose';
import { HydratedDocument } from 'mongoose';

export type ProblemDocument = HydratedDocument<Problem>;

@Schema()
export class Problem {
  @Prop({ required: true })
  title: string;

  @Prop({ required: true })
  description: string;

  @Prop({ required: true })
  creator: string;

  @Prop()
  ideas: string[];

  @Prop()
  createdAt: Date;

  @Prop()
  updatedAt: Date;

  @Prop()
  deletedAt: Date;
}

export const ProblemSchema = SchemaFactory.createForClass(Problem);

型
在problems service中创建方法：

async create(createProblemDto: CreateProblemDto): Promise<any> {
    try {
      console.log(createProblemDto);
      const problem = new this.ProblemModel({ createProblemDto });
      return problem.save();
    } catch (error) {
      throw error;
    }
  }

型
故障问题DTO：

import { IsString, IsNotEmpty } from 'class-validator';

export class CreateProblemDto {
  @IsString({ message: 'Title must be a string' })
  @IsNotEmpty({ message: 'Title is required' })
  title: string;

  @IsString({ message: 'Description must be a string' })
  @IsNotEmpty({ message: 'Description is required' })
  description: string;

  @IsString({ message: 'Creator must be a string' })
  @IsNotEmpty({ message: 'Creator is required' })
  creator: string;
}

型
这是我的请求：
POST http：//localhost：3000/problems Content-Type：application/json
{“title”：“hello”，“description”：“world”，“creator”：“john_doe”}
这是控制台中的日志：

{
  createProblemDto: { title: 'hello', description: 'world', creator: 'john_doe' }
}
[Nest] 17591  - 01/02/2024, 6:00:27 PM   ERROR [RpcExceptionsHandler] Problem validation failed: creator: Path `creator` is required., description: Path `description` is required., title: Path `title` is required.
ValidationError: Problem validation failed: creator: Path `creator` is required., description: Path `description` is required., title: Path `title` is required.
    at model.Document.invalidate (/home/arta/project/vsCode/nestjs/devProblem/problems/node_modules/.pnpm/[email protected]/node_modules/mongoose/lib/document.js:3187:32)
    at /home/arta/project/vsCode/nestjs/devProblem/problems/node_modules/.pnpm/[email protected]/node_modules/mongoose/lib/document.js:2980:17
    at /home/arta/project/vsCode/nestjs/devProblem/problems/node_modules/.pnpm/[email protected]/node_modules/mongoose/lib/schemaType.js:1368:9
    at processTicksAndRejections (node:internal/process/task_queues:77:11)

型
如果你需要更多的信息，请让我知道。