Question

我已经尝试了一切，但没有成功。在我不执行反应形式而是ng-model的示例中，这对我来说非常容易：

deliveryDate: moment(this.startDate).format('Y-MM-DD')

但是在Angular形式的当前代码中，我无法更改任何内容。看我的代码：

   export const MY_FORMATS = {
  parse: {
    dateInput: 'MM/DD',
  },
  display: {
    dateInput: 'MM/DD',
    monthYearLabel: 'MMM YYYY',
    dateA11yLabel: 'LL',
    monthYearA11yLabel: 'MMMM YYYY',
  },
};


@Component({
  selector: 'app-my-order',
  templateUrl: './my-order.component.html',
  styleUrls: ['./my-order.component.scss'],
  providers: [
    // `MomentDateAdapter` can be automatically provided by importing `MomentDateModule` in your
    // application's root module. We provide it at the component level here, due to limitations of
    // our example generation script.
    {
      provide: DateAdapter,
      useClass: MomentDateAdapter,
      deps: [MAT_DATE_LOCALE, MAT_MOMENT_DATE_ADAPTER_OPTIONS]
    },

    {provide: MAT_DATE_FORMATS, useValue: MY_FORMATS},
  ],
})
 resultOfdate: any = MY_FORMATS;


this.getProducts();
this.form = this.fb.group({
  deliveryDate: [moment(this.resultOfdate).format('2020-MM-DD'), Validators.required],  //this is not work format is hard-code on 2020 because deliveryDate from form return current date like a new Date(). this.resultOfdata is
  address: [null, [Validators.required, Validators.minLength(5)]],
  phone: [null, [Validators.minLength(9),Validators.maxLength(19)]],
  city: [null, [Validators.required, Validators.minLength(5)]],
  data: this.fb.array([this.createContact()]),
  note: [null]
});

还有我的模板：

        <mat-form-field>
            <input formControlName="resultOfdate"  matInput [matDatepicker]="resultOfdate" placeholder="Choose a date" >
            <mat-datepicker-toggle matSuffix [for]="resultOfdate" ></mat-datepicker-toggle>
            <mat-datepicker #resultOfdate></mat-datepicker>
          </mat-form-field>

我想发送类似2019-10-10的示例

Answer 1

您可能在错误的地方使用了moment.format。

像这样尝试，像这样在dateChange上调用您的方法：

export const MY_FORMATS_ORG = {
  parse: {
    dateInput: 'MM/DD',
  },
  display: {
    dateInput: 'MM/DD',
    monthYearLabel: 'MMM YYYY',
    dateA11yLabel: 'LL',
    monthYearA11yLabel: 'MMMM YYYY',
  },
};

@Component({
  selector: 'datepicker-formats-example',
  templateUrl: 'datepicker-formats-example.component.html',
  styleUrls: ['datepicker-formats-example.component.css'],
  providers: [
    {provide: DateAdapter, useClass: MomentDateAdapter, deps: [MAT_DATE_LOCALE]},
    {provide: MAT_DATE_FORMATS, useValue: MY_FORMATS_ORG},
  ],
})
export class DatepickerFormatsExampleComponent {
  date = new FormControl(moment());
  dateData: string;

  public setDate(date: string) {
    this.dateData = date ? moment(date).format('Y-MM-DD') : '';
  }
}

在这里检查：https://stackblitz.com/edit/angular-material-datepicker-6hjuhq?file=src/app/app.component.ts

另外，这个：

deliveryDate: moment(this.startDate).format('Y-MM-DD')

将会是错误的，应该是这样的：

deliveryDate: string;

，分配将在方法中完成。

希望对您有帮助。

如何从日期选择器棱角材料中以格式（'Y-MM-DD'）格式化日期？反应形式

1 个答案: