Bind saved Date in Edit Form using Angular 17

June 26, 2024

I have a form where the date is entered and saved but the date is not binded when I go to edit the form.

JSON:

"checkOut": {
    "runDate": "2024-07-05T09:42:00.000Z",
}

The form is:

<input type="datetime-local" [(ngModel)]="checkOut.runDate">

Date is shown by binding like this:

{{source.room.checkOut?.runDate | date:"dd MMM, yyyy"}}

When I go to edit the form, I want the input field [(ngModel)]="checkOut.runDate" to be pre-filled if the date is already entered. How can I achieve this?

>Solution :

Datetime local excepts the input to be like 2024-07-05T09:42:00, So we can transform it to suit the requirement.

ngOnInit() {
    this.checkOut.runDate = this.checkOut?.runDate?.split('.')?.[0];
}

Full Code:

import { CommonModule } from '@angular/common';
import { Component } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { bootstrapApplication } from '@angular/platform-browser';
import 'zone.js';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [FormsModule, CommonModule],
  template: `
   <input type="datetime-local" [(ngModel)]="checkOut.runDate">
   <br/>
   {{checkOut.runDate | date:"long"}}
  `,
})
export class App {
  checkOut: any = {
    runDate: '2024-07-05T09:42:00.000Z',
  };

  ngOnInit() {
    this.checkOut.runDate = this.checkOut?.runDate?.split('.')?.[0];
  }
}

bootstrapApplication(App);