如何在nestjs中return自定义状态码？

Question

我的系统有这样的自定义错误：

import { ExtendableError } from './extandable.error'

export const customError = {
  EMAIL_EXIST: () => new ExtendableError({
    message: 'USER WITH SUCH EMAIL ALREADY EXIST',
    code: 403
  }),

  INVALID_EMAIL: () => new ExtendableError({
    message: 'INVALID EMAIL',
    code: 400
  }),

  INVALID_PASSWORD: () => new ExtendableError({
    message: 'INVALID EMAIL OR PASSWORD',
    code: 403
  }),

  EMAIL_DOES_NOT_EXIST: () => new ExtendableError({
    message: 'EMAIL DOES NOT EXIST',
    code: 404
  }),

  TOKEN_DOES_NOT_EXIST: () => new ExtendableError({
    message: 'TOKEN DOES NOT EXIST',
    code: 404
  }),

  DIFFERENT_PASSWORDS: () => new ExtendableError({
    message: 'PASSWORDS ARE NOT SAME',
    code: 400
  }),

  CURRENT_PASSWORD_ERR0R: () => new ExtendableError({
    message: 'CURRENT PASSWORD IS INCORRECT',
    code: 400
  }),

  SAME_PASSWORDS_ERROR: () => new ExtendableError({
    message: 'CANNOT CHANGE SET NEW PASSWORD AS OLD PASSWORD',
    code: 403
  })
}

在这里我可以写我自己的错误响应当我请求某些东西时，例如电子邮件存在，它会抛出一个错误，即注册时此类电子邮件已经存在。

这里写着：

async createAccount (doc: RegisterDto, verificationLink: string) {
      if (!isValidEmail(doc.email)) {
        return customError.INVALID_EMAIL()
      }

      const user = await this.existByEmail(doc.email)

      if (!user) {
        return customError.EMAIL_EXIST()
      }// HERE I RETURNING AN ERROR TO CONTROLLER
      doc.password = await bcrypt.hash(doc.password, SALT_ROUNDS)
      const created = await this.repository.create(this.registerMapper.toDomain(doc))
      await this.emailService.sendVerificationEmail(created, verificationLink)
      return created
    }

这是我在控制器中的功能：

@Post('/api/register')
    async register(@Body() registerDTO: RegisterDto, @Request() request, @Response() response) {
      const verificationLink = `${request.protocol}://${request.header.host}/api/verify-account/`
      return await this.service.createAccount(registerDTO, verificationLink)
    }

在邮递员中，它显示了正文和响应，但状态代码的实际结果有 201 代码我该如何解决？

Answer 1

而不是 return customError.INVALID_EMAIL() 你应该 throw 一个错误。来自 npm docs:

let ExtendableError = require('extendable-error');

class MyCustomError extends ExtendableError {};

throw new MyCustomError('A custom error ocurred!');

如何在nestjs中return自定义状态码？

How to return custom status code in nestjs?

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