material datepicker 需要用到模板变量，如果需要在循环出来datepicker可以这么干
- 直接把 *ngFor 中的index传给[matDatepicker]，用来引用组件
-
*ngFor="let editItem of budget.edits; index as j;index as k;"j是组件的引用，k是循环索引。支持这种写法，把k传到方法里，方便操作哪一个日期组件。
实例
看代码
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-muldatepicker',
templateUrl: './muldatepicker.component.html',
styleUrls: ['./muldatepicker.component.styl']
})
export class MuldatepickerComponent implements OnInit {
result = {
budgets: []
};
constructor() {
}
ngOnInit() {
this.result = {
'budgets': [{
id: 1,
edits: [
{
'id': 10,
'date': new Date('2019-01-01 00:00:00'),
amount: 100,
},
{
'id': 11,
'date': new Date('2019-01-18 00:00:00'),
amount: 150,
}
]
},
{
id: 2,
edits: [
{
'id': 21,
'date': new Date('2019-02-10 00:00:00'),
amount: 0,
}
]
}
]
}
}
onAddOrUpdate() {
console.log(arguments);
}
}
模板
<pre>{{result.budgets|json}}</pre>
<mat-list *ngFor="let budget of result.budgets;index as i;">
<div *ngFor="let editItem of budget.edits; index as j;index as k;">
<mat-form-field>
<input matInput [matDatepicker]="j" [(ngModel)]="editItem.date" placeholder="Choose a date">
<mat-datepicker-toggle matSuffix [for]="j"></mat-datepicker-toggle>
<mat-datepicker #j></mat-datepicker>
</mat-form-field>
<mat-form-field>
<input type="number" min="0" matInput placeholder="amount" [(ngModel)]="editItem.amount">
</mat-form-field>
<button mat-icon-button color="primary" (click)="onAddOrUpdate(budget.id, editItem, i, k)">
<mat-icon>edit</mat-icon>
</button>
</div>
</mat-list>
