MatDatepickerFilter - 过滤器函数无法访问类变量 [英] MatDatepickerFilter - Filter function can't access class variable

问题描述

一个带有过滤器的 MatDatePicker 定义如下:

A MatDatePicker with a filter defined as followed:

<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>

export class DatepickerFilterExample {
  someDateToBlock: number = 3;
  myFilter = (d: Date): boolean => {
    const day = d.getDay();
    // THIS FUNCTION CANNOT ACCESS THE VARIABLE 'someDateToBlock'
    return day !== 0 && day !== 6;
  }
}

我想访问过滤器函数中的变量 someDateToBlock(或任何其他).是否有解决方法可以使这种情况成为可能?

I would like to access the variable someDateToBlock (or any other) in the filter function. Is there a workaround to make this possbile?

推荐答案

这是有效的，这里是 plunkr 链接:https://plnkr.co/edit/oRGfxLSrn6GdfRhYO1rr?p=preview

This is working, here is plunkr link: https://plnkr.co/edit/oRGfxLSrn6GdfRhYO1rr?p=preview

export class DatepickerOverviewExample {
  someDateToBlock: number = 3;
  myFilter = (d: Date): boolean => {
    const day = d.getDay();
    // THIS FUNCTION CANNOT ACCESS THE VARIABLE 'someDateToBlock'
    return this.someDateToBlock;
  }
}

我也检查了 alert(this.someDateToBlock)

I checked with alert(this.someDateToBlock) also

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