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我有一个表单，它包含一个表单控件作为日期选择器和一个垫子日期选择器。当我使用日期纠察队选择日期时，表单控件正在使用日期类。我需要将其转换为字符串。请在此 html 代码中帮助我：

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

当我选择一个日期时，它应该转换为 11-05-2020(dd-mm-yyyy) 用于提交时的表单控件。请帮助我

编辑：

 import { Component, OnInit } from '@angular/core';
    import { ProductsService } from '../products/products.service';
    import { forkJoin } from 'rxjs';
    import { FormControl, Validators, FormBuilder, FormArray } from '@angular/forms';
    import { Router } from '@angular/router';
    import {DateAdapter, MAT_DATE_FORMATS, MAT_DATE_LOCALE} from '@angular/material/core';

    @Component({
      selector: 'app-orders',
      templateUrl: './orders.component.html',
      styleUrls: ['./orders.component.scss'],
      providers: [ProductsService, {provide: MAT_DATE_LOCALE, useValue: 'en-GB'}]
    })
    export class OrdersComponent implements OnInit {
       paginationPageSize:any;
       getRowHeight:any;
    statusList=['open','closed'];
    form = this.fb.group({

      city: new FormControl('', Validators.required),
      date: new FormControl('', Validators.required),
      status: new FormControl('', Validators.required),
      pageNum:0,
      pageSize:10,
      preOrders: new FormControl(false, Validators.required),
     });
     constructor(private productsService: ProductsService, private fb: FormBuilder, private router: Router) { }

      ngOnInit() {
      }

      onSubmit() {
        if (this.form.valid) {
          const value = this.form.value;
        }
    }


    }

我已经添加了提供程序，但它仍然无法正常工作。

4

1 回答 1

1

您可以使用国际化区域设置更改日期格式

在组件 TS 中设置区域设置...

@Component({
  selector: ...,
  templateUrl: ...,
  styleUrls: ...,
  providers: [
    {provide: MAT_DATE_LOCALE, useValue: 'en-GB'},
  ],
  ...
})
export class Component ...

如果要全局更改它，请在您的app.module.ts

@NgModule({
  providers: [
    {provide: MAT_DATE_LOCALE, useValue: 'en-GB'},
  ],
})
export class AppModule {}

参考：https ://material.angular.io/components/datepicker/overview#internationalization

希望能帮助到你！

于 2020-05-12T22:21:28.823 回答