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How to change date format in ngbDatepicker input field in angular bootstrap?


By : user2176175
Date : October 14 2020, 02:22 PM
will help you To use a class that extends a NbgDateParserFormat you must include it in app.module in providers,
code :
@NgModule({
  declarations: [
    AppComponent,
    ...  
  ],
  imports: [
    BrowserModule,
    NgbModule,
    ...
  ],
  providers: [
    { provide: NgbDateParserFormatter, useClass: DateParserFormatter },
    ...

  ],
  bootstrap: [AppComponent]
})


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How to show custom date format in angular-bootstrap-datetimepicker input field?


By : Radhika Goel
Date : March 29 2020, 07:55 AM
Hope that helps As per the documentation here
You can pass configuration options as a function or an object.
code :
Selected Date: {{ data.date | date:'MMMM Do YYYY, h:mm a' }}

<datetimepicker data-ng-model="data.embeddedDate"
    data-datetimepicker-config="{ startView:'day', minView:'day' }" />

How to change ngbDatepicker date format from JSON to YYYY/MM/DD


By : qwertzlcoatl
Date : March 29 2020, 07:55 AM
seems to work fine There two important class to manage ngbDate. one it's for formatting the date: a DateParserFormater, and another to change the value you get/send from/to a ngb-datepicker: a DateAdapter.
So, you can create a customDateAdapter and a customDateParserFormatter. But, don't worry about the names. ist only two injectable class like, e.g.
code :
@Injectable()
export class CustomDateAdapter {
  fromModel(value: string): NgbDateStruct
  {
     if (!value)
      return null
     let parts=value.split('/');
     return {year:+parts[0],month:+parts[1],day:+parts[2]}
  }

  toModel(date: NgbDateStruct): string // from internal model -> your mode
  {
    return date?date.year+"/"+('0'+date.month).slice(-2)
           +"/"+('0'+date.day).slice(-2):null
  }
}
@Injectable()
export class CustomDateParserFormatter {
  parse(value: string): NgbDateStruct
  {
    if (!value)
      return null
     let parts=value.split('/');
     return {year:+parts[0],month:+parts[1],day:+parts[2]} as NgbDateStruct

  }
  format(date: NgbDateStruct): string
  {
    return date?date.year+"/"+('0'+date.month).slice(-2)+"/"+('0'+date.day).slice(-2):null
  }
}
  providers: [{provide: NgbDateAdapter, useClass: CustomDateAdapter},
              {provide: NgbDateParserFormatter, useClass: CustomDateParserFormatter}]
@Component({
  selector: 'ngbd-datepicker-adapter',
  templateUrl: './datepicker-adapter.html',
  providers: [{provide: NgbDateAdapter, useClass: NgbDateNativeAdapter}]
})
@Component({
  selector: 'ngbd-datepicker-adapter',
  templateUrl: './datepicker-adapter.html',
  providers: [{provide: NgbDateAdapter, useClass: CustomDateAdapter},
          {provide: NgbDateParserFormatter, useClass: CustomDateParserFormatter}]
})
@Component({
  selector: 'ngbd-datepicker-adapter',
  templateUrl: './datepicker-adapter.html',
  providers: [{provide: NgbDateParserFormatter, useClass: CustomDateParserFormatter}]
})

Angular Bootstrap - ngbDatepicker - Convert selected Date into Date Object


By : user3473134
Date : March 29 2020, 07:55 AM
With these it helps In Date() indexing of month is 0 based you whatever number you want to enter like december(12th month) will have value 11. So try putting (month-1) in new Date().
Like shown below:
code :
let oDob = new Date(employeeToSave.dob['year'], employeeToSave.dob['month']-1,  employeeToSave.dob['day']);
let month=12;
let year = 2019;
let day = 12;
dob = new Date(year,month,day);
console.log("wrong Date : "+dob);

dob2 = new Date(year,month-1,day);
console.log("correct Date : "+dob2);

Format the date which is selected through Bootstrap ngbDatepicker in angular 2


By : Divya Priyanka
Date : March 29 2020, 07:55 AM
should help you out HTML code , You can use the date pipe like in this example:

How to change model structure of angular powered bootstrap ngbDatepicker


By : Gold Group
Date : March 29 2020, 07:55 AM
Any of those help So I think the easiest way to solve your problem is to provide your own implementation of NgbDateAdapter and inject that into you component. You will need to add
code :
{provide: NgbDateAdapter, useClass: NgbUTCStringAdapter}
@Injectable()
export class NgbUTCStringAdapter extends NgbDateAdapter<string> {

  fromModel(date: string): NgbDateStruct {
    return (date && Number(date.substring(0, 4)) && Number(date.substring(5, 7) + 1) && Number(date.substring(8, 10))) ?
                {year: Number(date.substring(0, 4)),
                    month: Number(date.substring(5, 7)),
                    day: Number(date.substring(8, 10))} : null;
  }

  toModel(date: NgbDateStruct): string {
    return date ? date.year.toString() + '-' + String('00' + date.month).slice(-2)
                            + '-' + String('00' + date.day).slice(-2) : null;
  }
}
@Component({
selector: 'app-date',
templateUrl: './date.component.html',
providers: [
    {
        provide: NG_VALUE_ACCESSOR,
        useExisting: forwardRef(() => DateComponent),
        multi: true
    },
    {provide: NgbDateParserFormatter, useClass: NgbDateOmniParserFormatter}]
})

export class DateComponent implements ControlValueAccessor {

  model;

  writeValue(value: any) {
    this.model =  (value && Number(value.substring(0, 4)) && 
                        Number(value.substring(5, 7) + 1) &&
                        Number(value.substring(8, 10))) ?
                            {year: Number(value.substring(0, 4)),
                             month: Number(value.substring(5, 7)),
                             day: Number(value.substring(8, 10))} : null;
  }

  propagateChange = (_: any) => {};

  registerOnChange(fn) {
    this.propagateChange = fn;
  }

  registerOnTouched() {}

  change() {
    const date = this.model ? this.model.year.toString() + '-' + 
                   String('00' + this.model.month).slice(-2) + '-' +
                   String('00' + this.model.day).slice(-2) : null;

    this.propagateChange(date);
  }
}
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