Angular Material 6 datepicker在同一组件中具有不同的格式 [英] Angular Material 6 datepicker different formats in same component

问题描述

我需要在一个组件视图的两个mat datepicker字段中选择两种不同的日期格式(YYYY-MM-DD和YYYY-MM).

I need to select two different date formats (YYYY-MM-DD and YYYY-MM) in two mat datepicker fields in one component view.

我正在使用角度6.0.3和材料6.4.7.

I'm using angular 6.0.3 and material 6.4.7.

我在使用MAT_DATE_FORMATS的应用程序模块中将datepicker格式配置为YYYY-MM-DD，并且它可以全局工作，但如上所述，我需要在一些datepicker字段中将此格式覆盖为YYYY-MM.不幸的是，我不知道如何实现这一目标.

I configured datepicker format to YYYY-MM-DD in app module using MAT_DATE_FORMATS and it works globally but I need to override this format to YYYY-MM in a few datepicker fields as I wrote above. Unfortunatelly I have no idea how I can achieve this.

你能帮我吗?

我的代码的一部分:

        import { Component, OnInit, ViewChild } from '@angular/core';
    import { FormGroup, FormControl } from '@angular/forms';

    @Component({
      selector: 'app-invoice-list',
      templateUrl: './invoice-list.component.html',
      styleUrls: ['./invoice-list.component.css']
    })
    export class InvoiceListComponent {

      filterForm: FormGroup;

      @ViewChild('month_picker') month_picker;

      constructor() {
        this.filterForm = new FormGroup({
          assigned_date_from: new FormControl(),
          assigned_date_to: new FormControl(),
          assigned_month: new FormControl(),
        });
      }
    }

<div class="container" [formGroup]="filterForm">
  <div class="container" fxLayout="row" fxLayout.xs="column" fxLayoutWrap fxLayoutGap="0.5%" fxLayoutAlign="start">
      <div fxFlex="32%">
        <mat-form-field>
            <input matInput [matDatepicker]="date_from_picker" (focus)="date_from_picker.open()" formControlName="assigned_date_from" placeholder="Date from">
            <mat-datepicker-toggle matSuffix [for]="date_from_picker"></mat-datepicker-toggle>
            <mat-datepicker #date_from_picker></mat-datepicker>
        </mat-form-field>
      </div>
      <div fxFlex="32%">
        <mat-form-field>
            <input matInput [matDatepicker]="date_to_picker" (focus)="date_to_picker.open()" formControlName="assigned_date_to" placeholder="Date to">
            <mat-datepicker-toggle matSuffix [for]="date_to_picker"></mat-datepicker-toggle>
            <mat-datepicker #date_to_picker></mat-datepicker>
          </mat-form-field>
      </div>

      <!-- In below input I want month year format - YYYY-MM - so different than default format in above fields -->
      <div fxFlex="32%">
          <mat-form-field>
              <input matInput [matDatepicker]="month_picker" (focus)="month_picker.open()" formControlName="assigned_month" placeholder="Month">
              <mat-datepicker-toggle matSuffix [for]="month_picker"></mat-datepicker-toggle>
              <mat-datepicker #month_picker></mat-datepicker>
            </mat-form-field>
        </div>
    </div>
</div>

推荐答案

请尝试此操作.在您的HTML

Please try this. In your Html

        <mat-form-field>
          <input matInput [matDatepicker]="month_picker" (focus)="month_picker.open()" [value] = "selectedMonth" placeholder="Month">
          <mat-datepicker-toggle matSuffix [for]="month_picker"></mat-datepicker-toggle>
          <mat-datepicker #month_picker  
              startView="multi-year"
              (monthSelected)="chosenMonthHandler($event, month_picker)"></mat-datepicker>
        </mat-form-field>

在您的.ts

    selectedMonth = new Date();

    chosenMonthHandler(normlizedMonth, datepicker) {
        var tempDate = JSON.stringify(normlizedMonth).replace("\"",'').split("-")
        var month = parseInt(tempDate[1])
        var year = month == 12?parseInt(tempDate[0])+1:parseInt(tempDate[0])
        var year = month == 12?parseInt(tempDate[0])+1:parseInt(tempDate[0])
        month = month == 12?1:month+1;
        this.selectedMonth = new Date(year + "-" + month)
        console.log(year + " " + month)
        datepicker.close();
      }

这很好用，但是在选择一个月后将所选日期显示为1.但是我认为这符合您的要求.

This works well.but show the selected date as 1 after select a month.But I think this fulfills your requirements.

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