我无法从中获得价值mat-datepicker。它说undefined。我用过ngForm，ngModel但我不知道我错在哪里。
<form #f="ngForm" (ngSubmit)="registerClient(f.value)">
<div class="" style="width: 50%; margin:auto;">
<!-- ... Other fields -->
<!-- ... -->
<div class="form-group">
<mat-form-field id="date">
<input matInput [matDatepicker]="picker" placeholder="Choose a date" [(ngModel)]="date">
<mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
<mat-datepicker id="datePicked" #picker></mat-datepicker>
</mat-form-field>
</div>
<div>
</div>
<button class="btn btn-success mt-2">Add new client</button>
</div>
</form>
客户端form.ts
export class ClientFormComponent {
date: Date;
// ...
// ...
registerClient(crediantials) {
let client: Client = {
firstName: crediantials.firstName,
lastName: crediantials.lastName,
phone: crediantials.phone,
doctorsName: this.selectedD.username,
procedure: this.selectedP,
registrationDate: this.date
};
console.log(client), 'client';
console.log(crediantials)
console.log(this.date, ' date);
this.clientService.addClient(client);
}
}
这些是我在控制台中遇到的错误。
ClientFormComponent.html:41 ERROR 错误：如果在表单标签中使用 ngModel，则必须设置 name 属性或必须在 ngModelOptions 中将表单控件定义为“独立”。
示例 1：
<input [(ngModel)]="person.firstName" name="first">示例 2：
<input [(ngModel)]="person.firstName" [ngModelOptions]="{standalone: true}">错误上下文 DebugContext_ {view: {…}, nodeIndex: 69, nodeDef: {…}, elDef: {…}, elView: {…}}
ERROR 错误：ViewDestroyedError：尝试使用已破坏的视图：detectChanges
这是发生错误的行。
<input matInput [matDatepicker]="picker" placeholder="Choose a date" [(ngModel)]="date">