我有一组日期,我只想在<mat-datepicker>
中启用这些日期。
"ListOfDates": [
{
"startDate": "2018-01-01T08:00:00"
},
{
"startDate": "2018-01-02T08:00:00"
},
{
"startDate": "2018-01-03T09:00:00",
}]
这是我的HTML代码:
<mat-form-field>
<input matInput
[matDatepicker]="picker"
[matDatepickerFilter]="dateFilter"
placeholder="Choose a date">
<mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
<mat-datepicker #picker></mat-datepicker>
</mat-form-field>
在我的Component.ts
文件中:
@Component({...})
export class SomeComponent.ts {
dateFilter = (date: Date) => date.getDate()
}
有人可以为此提供帮助吗?
答案 0 :(得分:2)
您将需要一个自定义验证器。更多细节可以在这里找到:https://material.angular.io/components/datepicker/overview#date-validation
基本上,您提供一个接受日期并返回一个布尔值的函数,该布尔值指示该日期是否有效。在您的情况下,您希望在控制器中检查给定日期是否是列表的成员。这是一个基本的实现:
HTML:
<mat-form-field class="example-full-width">
<input matInput [matDatepickerFilter]="myFilter" [matDatepicker]="picker" placeholder="Choose a date">
<mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
<mat-datepicker #picker></mat-datepicker>
</mat-form-field>
TS:
import {Component} from '@angular/core';
/** @title Datepicker with filter validation */
@Component({
selector: 'datepicker-filter-example',
templateUrl: 'datepicker-filter-example.html',
styleUrls: ['datepicker-filter-example.css'],
})
export class DatepickerFilterExample {
validDates = {
"2018-01-01T08:00:00": true,
"2018-01-02T08:00:00": true
}
myFilter = (d: Date): boolean => {
// Using a JS Object as a lookup table of valid dates
// Undefined will be falsy.
return validDates[d.toISOString()];
}
}
答案 1 :(得分:1)
myFilter = (d: Date): boolean => {
let enableFlag = false;
this.ListOfDates.some((date) => {
if (date.startDate === d) { // You can use any other comparison operator used by date object
enableFlag = true;
return true;
}
})
return enableFlag;
}
注意:您将必须将ListOfDates中的d和日期格式化为您选择的标准格式