角度材料io MatDatePicker

Question

我是Angular/Angular Material的新手.

我有一个带有2个MatDatePicker输入字段的div:

<div class="docs-example-viewer-body">
  <mat-form-field>
    <mat-select placeholder="Employee" [(ngModel)]="selectedEmployeeId" name="employee_name" (ngModelChange)="setSelectedEmployee($event)">
      <mat-option *ngFor="let employee of employees" [value]="employee.id">
        {{employee.name}}
      </mat-option>
    </mat-select>
  </mat-form-field>

  <mat-form-field>
    <input matInput [matDatepicker]="picker" placeholder="Choose a start date" [(ngModel)]="inputStartDate">
    <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
    <mat-datepicker #picker [startAt]="startDate"></mat-datepicker>
  </mat-form-field>

  <mat-form-field>
    <input matInput [matDatepicker]="picker" placeholder="Choose an end date" [(ngModel)]="inputEndDate">
    <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
    <mat-datepicker #picker [startAt]="endDate"></mat-datepicker>
  </mat-form-field>


  <p *ngIf="selectedEmployeeId"> Selected value: {{selectedEmployeeId}} from {{inputStartDate}} until {{inputEndDate}}</p>
</div>

但是我在浏览器中收到以下错误:

MatDatepicker只能与单个输入相关联.at MatDatepicker.registerDatepicker(datepicker.es5.js:1560)的MatDatepicker._registerInput(datepicker.es5.js:1281)

感谢您的解决方案或反馈

Joost的

Answer 1

实例变量名称必须对每个实例都是唯一的.在这个例子中,我已经习惯了picker1,picker2但可以随意使用更好的名字.这是Material plunker的样本.

<mat-form-field>
  <input matInput [matDatepicker]="picker1" placeholder="Choose a start date" [(ngModel)]="inputStartDate">
  <mat-datepicker-toggle matSuffix [for]="picker1"></mat-datepicker-toggle>
  <mat-datepicker #picker1 [startAt]="startDate"></mat-datepicker>
</mat-form-field>

<mat-form-field>
  <input matInput [matDatepicker]="picker2" placeholder="Choose an end date" [(ngModel)]="inputEndDate">
  <mat-datepicker-toggle matSuffix [for]="picker2"></mat-datepicker-toggle>
  <mat-datepicker #picker2 [startAt]="endDate"></mat-datepicker>
</mat-form-field>