How disable all the dates before a particular date in angular?

Question

I am building a component (html, css, spec.ts, ts) in angular in which I always want endDate > startDate. I have followed this link https://material.angular.io/components/datepicker/overview in order make multiple datepickers.

Below is my HTML for startDate and endDate:

startDate:

<div class="start-date" fxFlex="50%" fxFlexOrder="1">
          <mat-form-field>
            <input matInput [matDatepicker]="picker1" placeholder="{{'PORTAL.STARTDATE' | translate}}" type="text" formControlName="startDate" [(ngModel)]="unavailability.startDate" [readonly]="!componentPermission.writePermission">
            <mat-datepicker-toggle matSuffix [for]="picker1"></mat-datepicker-toggle>
            <mat-datepicker #picker1></mat-datepicker>
          </mat-form-field>
        </div>

endDate:

<div class="end-date" fxFlex="50%" fxFlexOrder="2">
           <mat-form-field>
      <input matInput [matDatepicker]="picker2" placeholder="{{'PORTAL.ENDDATE' | translate}}" type="text" formControlName="endDate" [(ngModel)]="unavailability.endDate" [readonly]="!componentPermission.writePermission">
      <mat-datepicker-toggle matSuffix [for]="picker2"></mat-datepicker-toggle>
      <mat-datepicker #picker2></mat-datepicker>
   </mat-form-field>
        </div>

Now below is my angular code (ts) where I am calling validateForm method on the page load.

ngOnInit() {
    ....
    this.validateForm();
}

validateForm() {
    this.unavailabilityForm = this.formBuilder.group({
     'startDate': ['', Validators.required],
     'endDate': ['', Validators.required],
     'unavailabilityReason': ['']
    });
}

ProblemStatement:

Now what I need to do is - if I have selected any date in startDate (for example 23rd Nov), then in the endDate datepicker all the dates before and including 23rd Nov should be disabled so that I can only select dates after 23rd Nov only. Is this possible to do in Angular?

Can we achieve that by placing minDate and maxDate somewhere in HTML or TS ?

Answer 1

Binding with [min] works perfect for any date

.ts file

//today's date
todayDate:Date = new Date();

//any date
someDate: Date = new Date(anydate);

.html file

 <mat-form-field>
        <input matInput [matDatepicker]="picker" [min]="todayDate" placeholder="Appointment date" formControlName="appointment_date"> 
        <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
        <mat-datepicker #picker></mat-datepicker>
  </mat-form-field>