如何更改角形材料日期选择器中的日期格式？

Question

I want to change the default date format (YYYY-MM-DD) to some other format like (MM-DD-YYYY).

This is my calendar HTML structure.

 <mat-form-field class="full-width">
                        <input matInput [matDatepicker]="picker"
                               [(ngModel)]="currentDay"
                               (dateChange)="currentDayChanged()"
                               required
                               placeholder="date"
                               name="currentDay">
                        <mat-datepicker-toggle matSuffix
                                               [for]="picker">
                        </mat-datepicker-toggle>
                        <mat-datepicker #picker></mat-datepicker>
                    </mat-form-field>

Answer 1

There is a blog about it: https://blog.angular.io/taking-advantage-of-the-angular-material-datepicker-237e80fa14b3

(in case the URL becomes invalid), For example, say you're already using Moment.js throughout your app, you can create a MomentDateAdapter:

Inherit a class

class MomentDateAdapter extends DateAdapter<Moment> {
  parse(value: any, parseFormat: any): Moment {
    return moment(value, parseFormat);
  }

  // Implementation for remaining abstract methods of DateAdapter.
}

Create a const like this, fe in a separate typescript file:

const MOMENT_FORMATS = {
  parse: {
    dateInput: 'LL',
  },
  display: {
    monthYearLabel: 'MMM YYYY',
    // See DateFormats for other required formats.
  },
};

finally provide both of these things in your application module

@NgModule({
  imports: [MdDatepickerModule, ...],
  providers: [
    {provide: DateAdapter, useClass: MomentDateAdapter},
    {provide: MD_DATE_FORMATS, useValue: MOMENT_FORMATS},
  ],
})
class AppModule {}

I appreciate if you let us know your results.

Answer 2

Set in AppModule your locale!

Example for Brazil,

 import { LOCALE_ID } from '@angular/core'; import localePt from '@angular/common/locales/pt'; registerLocaleData(localePt, 'pt-BR'); @NgModule({ declarations: [ AppComponent ], imports: [], providers: [ { provide: LOCALE_ID, useValue: 'pt-BR' } ], bootstrap: [AppComponent] }) export class AppModule { }