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我创建了 3 个从另一个父 DTO 扩展的 DTO，然后在控制器中我使用类验证器库来验证用户传递给控制器​​的数据。

父.dto.ts

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

export class Parent {
  @IsNotEmpty()
  @IsMongoId()
  platform: string;
  @IsNotEmpty()
  @IsString({ each: true })
  admins: string[];
  @IsDateString()
  purchaseDate: Date;
  @IsDateString()
  validFrom: Date;
  @IsDateString()
  validTo: Date;
}

a.dto.ts

import { IsMongoId, IsNotEmpty, ValidateNested } from 'class-validator';
import { Type } from 'class-transformer';
import { Parent } from './parent.dto';

class A_options {
  @IsNotEmpty()
  @IsMongoId()
  dataA: string;
}

export class A extends Parent {
  @IsNotEmpty()
  testA: string;
  @ValidateNested()
  @Type(() => A_options)
  data: A_options;
}

b.dto.ts

import { IsMongoId, IsNotEmpty, ValidateNested } from 'class-validator';
import { Type } from 'class-transformer';
import { Parent } from './parent.dto';

class B_options {
  @IsNotEmpty()
  @IsMongoId()
  dataB: string;
}

export class B extends Parent {
  @IsNotEmpty()
  testB: string;
  @ValidateNested()
  @Type(() => B_options)
  data: B_options;
}

c.dto.ts

import { IsMongoId, IsNotEmpty, ValidateNested } from 'class-validator';
import { Type } from 'class-transformer';
import { Parent } from './parent.dto';

class C_options {
  @IsNotEmpty()
  @IsMongoId()
  dataC: string;
}

export class C extends Parent {
  @IsNotEmpty()
  testC: string;
  @ValidateNested()
  @Type(() => C_options)
  data: C_options;
}

在控制器中我正在使用ValidationPipe设置body: A

控制器.ts

@UsePipes(ValidationPipe)
  @Post()
  async createItem(@Res() res, @Body() body: A) {
    const result = await this.createTest.createObject(body);
    return res.status(HttpStatus.OK).json({
      message: 'Item has been created successfully',
      newLicense,
    });
  }
}

这也适用于body: B和body: C

但是当我这样做时它不起作用body: A | B | C

我怎样才能让它工作，所以代码会是这样的？

@UsePipes(ValidationPipe)
  @Post()
  async createItem(@Res() res, @Body() body: A | B | C) {
    const result = await this.createTest.createObject(body);
    return res.status(HttpStatus.OK).json({
      message: 'Item has been created successfully',
      newLicense,
    });
  }
}
4

1 回答 1

0

在您的情况下，我只是建议实现一个接口并在您的类IParent中扩展它。Parent

然后你可以IParent在你的控制器中使用，如下所示：

控制器.ts

@UsePipes(ValidationPipe)
@Post()
async createItem(@Res() res, @Body() body: IParent) {
  const result = await this.createTest.createObject(body);
  return res.status(HttpStatus.OK).json({
    message: 'Item has been created successfully',
    newLicense,
  });
}

父接口.ts

export interface IParent {
  platform: string;
  admins: string[];
  purchaseDate: Date;
  validFrom: Date;
  validTo: Date;
}

父类.ts

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

export class Parent implements IParent {
  @IsNotEmpty()
  @IsMongoId()
  platform: string;

  @IsNotEmpty()
  @IsString({ each: true })
  admins: string[];

  @IsDateString()
  purchaseDate: Date;

  @IsDateString()
  validFrom: Date;

  @IsDateString()
  validTo: Date;
}

让我知道是否有帮助；如果是，请验证答案，否则请提供指向具有最少复制的存储库的链接，以便我们进一步提供帮助。

于 2019-06-11T17:07:46.990 回答