Question

我有一些这样的模型

export class ExpertOperational {
  comment: string;
  outOfService: Date;
  score: string;
  supplierNumber: string;
  useSlots: boolean;
  workingDay: ExpertWorkingDay[] = [];
  workSpeedSurvey: string;
  workSpeedVisit: string;
}

export class ExpertWorkingDay {
  constructor(
    public weekDay: WeekDays,
    public operationalAM: ExpertWorkingHours,
    public operationalPM: ExpertWorkingHours
  ) {}
}

export enum WeekDays {
  MONDAY = 'MONDAY',
  TUESDAY = 'TUESDAY',
  WEDNESDAY = 'WEDNESDAY',
  THURSDAY = 'THURSDAY',
  FRIDAY = 'FRIDAY',
  SATURDAY = 'SATURDAY',
  SUNDAY = 'SUNDAY'
}

export class ExpertWorkingHours {
  constructor(
    public fixed: boolean,
    public startTime: string,
    public endTime: string
  ) {}
}

我需要的是从枚举和模型中创建空对象

const expert = {
  comment: '',
  outOfService: '',
  score: '',
  supplierNumber: '',
  useSlots: false,
  workingDay: [
    {
      weekDay: 'MONDAY',
      operationalAM: {
        fixed: false,
        startTime: '',
        endTime: ''
      },
      operationalPM: {
        fixed: false,
        startTime: '',
        endTime: ''
      }
    },
    {
      weekDay: 'TUESDAY',
      operationalAM: {
        fixed: false,
        startTime: '',
        endTime: ''
      },
      operationalPM: {
        fixed: false,
        startTime: '',
        endTime: ''
      }
    },
    {
      weekDay: 'WEDNESDAY',
      operationalAM: {
        fixed: false,
        startTime: '',
        endTime: ''
      },
      operationalPM: {
        fixed: false,
        startTime: '',
        endTime: ''
      }
    },
    {
      weekDay: 'THURSDAY',
      operationalAM : {
        fixed: false,
        startTime: '',
        endTime: ''
      },
      operationalPM
        : {
        fixed: false,
        startTime: '',
        endTime: ''
      }
    },
    {
      weekDay: 'FRIDAY',
      operationalAM: {
        fixed: false,
        startTime: '',
        endTime: ''
      },
      operationalPM: {
        fixed: false,
        startTime: '',
        endTime: ''
      }
    },
    {
      weekDay: 'SATURDAY',
      operationalAM: {
        fixed: false,
        startTime: '',
        endTime: ''
      },
      operationalPM: {
        fixed: false,
        startTime: '',
        endTime: ''
      }
    }, {
      weekDay: 'SUNDAY',
      operationalAM: {
        fixed: false,
        startTime: '',
        endTime: '',
      },
      operationalPM: {
        fixed: false,
        startTime: '',
        endTime: ''
      }
    }
  ],
  workSpeedSurvey: '',
  workSpeedVisit: ''
}

我需要的是用模型中的空值创建对象，我不需要数据！我已经尝试过了，但是我没有运气

const data: ExpertWorkingDay[] = [];
const workingHours = Object.values(WeekDays);
workingHours.forEach(day => {
  data.push(
    new ExpertWorkingDay(
      WeekDays[day],
      new ExpertWorkingHours(
        fixed: false,
        startTime = '',
        endTime = ''
      ),
      new ExpertWorkingHours(
        fixed: false,
        startTime = '',
        endTime = ''
      )
    )
  );
});

谢谢

Answer 1

由于您的day是动态的，因此您必须指定day的类型为WeekDays。

为此，您可以使用WeekDays[day as keyof WeekDays]

下面的代码将帮助您：

workingHours.forEach(day => {
  data.push(
    new ExpertWorkingDay(
      WeekDays[day as keyof WeekDays],
      new ExpertWorkingHours(
        false,
        '',
        ''
      ),
      new ExpertWorkingHours(
        false,
        '',
        ''
      )
    )
  );
});

我已经修改了同一个例子，但有手头的问题。请参阅this。

我已将workingDays添加为['MONDAY' , 'TUESDAY']。

编辑：

由于OP尝试使用Object.values()获取枚举键，所以您无需执行任何操作，因为Object.values()将返回Array<WeekDays>。因此，将const workingHours的类型设置为Array<WeekDays>。

const data: ExpertWorkingDay[] = [];
// const workingHours : string[] = Object.keys(WeekDays); //If enum keys
// const workingHours : string[] = ['MONDAY' , 'TUESDAY']; //if day as array
const workingHours : WeekDays[] = Object.values(WeekDays);
workingHours.forEach(day => {
    data.push(
        new ExpertWorkingDay(
            WeekDays[day],
            new ExpertWorkingHours(
                false,
                '',
                ''
            ),
            new ExpertWorkingHours(
                false,
                '',
                ''
            )
        )
    );
});

console.log(data);

Answer 2

如果我正确理解它，则不希望使用数组的硬编码值，而应使用枚举。

如果有帮助，我添加了示例代码。

const data: ExpertWorkingDay[] = [];
const workingHours = Object.keys(WeekDays);

console.log(workingHours);

workingHours.forEach(day => {
  data.push(
    new ExpertWorkingDay(
      WeekDays[day as keyof WeekDays],
      new ExpertWorkingHours(
        false,
        '',
        ''
      ),
      new ExpertWorkingHours(
        false,
        '',
        ''
      )
    )
  );
});

从枚举打字稿创建空对象

2 个答案: