Bootstrap NgbDate Date Range Calendar - “TypeError: Cannot read property 'equals' of undefined”












1















I'm using Angular Bootstrap to create a date range picker and although the code is exactly what's in their example, I get several errors, all stating "TypeError: Cannot read property 'equals' of undefined".



This is the code I have: https://stackblitz.com/angular/ggxrvppdjeq



The only real difference is that I'm importing NgbDate from another folder:
import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';



If I try to do it from @ng-bootstrap/ng-bootstrap as the example had, I get an error in VSCode: node_modules/@ng-bootstrap/ng-bootstrap"' has no exported member. Switching it to what I have above makes the error go away... but perhaps this is causing the issue?



Template:



<ngb-datepicker #dp (select)="onDateSelection($event)" [displayMonths]="2" [dayTemplate]="t" outsideDays="hidden">
</ngb-datepicker>

<ng-template #t let-date let-focused="focused">
<span class="custom-day"
[class.focused]="focused"
[class.range]="isRange(date)"
[class.faded]="isHovered(date) || isInside(date)"
(mouseenter)="hoveredDate = date"
(mouseleave)="hoveredDate = null">
{{ date.day }}
</span>
</ng-template>

<hr>

<pre>From: {{ fromDate | json }} </pre>
<pre>To: {{ toDate | json }} </pre>


Component:



import { Component, OnInit } from '@angular/core';
import { NgbCalendar } from '@ng-bootstrap/ng-bootstrap';
import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';

@Component({
selector: 'ngbd-datepicker-range',
templateUrl: './datepicker-range.html',
styles: [`
.custom-day {
text-align: center;
padding: 0.185rem 0.25rem;
display: inline-block;
height: 2rem;
width: 2rem;
}
.custom-day.focused {
background-color: #e6e6e6;
}
.custom-day.range, .custom-day:hover {
background-color: rgb(2, 117, 216);
color: white;
}
.custom-day.faded {
background-color: rgba(2, 117, 216, 0.5);
}
`]
})
export class NgbdDatepickerRange {

hoveredDate: NgbDate;

fromDate: NgbDate;
toDate: NgbDate;

constructor(calendar: NgbCalendar) {
this.fromDate = calendar.getToday();
this.toDate = calendar.getNext(calendar.getToday(), 'd', 10);
}

onDateSelection(date: NgbDate) {
if (!this.fromDate && !this.toDate) {
this.fromDate = date;
} else if (this.fromDate && !this.toDate && date.after(this.fromDate)) {
this.toDate = date;
} else {
this.toDate = null;
this.fromDate = date;
}
}

isHovered(date: NgbDate) {
return this.fromDate && !this.toDate && this.hoveredDate && date.after(this.fromDate) && date.before(this.hoveredDate);
}

isInside(date: NgbDate) {
return date.after(this.fromDate) && date.before(this.toDate);
}

isRange(date: NgbDate) {
return date.equals(this.fromDate) || date.equals(this.toDate) || this.isInside(date) || this.isHovered(date);
}
}


I was able to implement this successfully in an outside project but when I inserted into this existing project I'm having issues. Any help would be much appreciated, I can't figure it out.










share|improve this question



























    1















    I'm using Angular Bootstrap to create a date range picker and although the code is exactly what's in their example, I get several errors, all stating "TypeError: Cannot read property 'equals' of undefined".



    This is the code I have: https://stackblitz.com/angular/ggxrvppdjeq



    The only real difference is that I'm importing NgbDate from another folder:
    import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';



    If I try to do it from @ng-bootstrap/ng-bootstrap as the example had, I get an error in VSCode: node_modules/@ng-bootstrap/ng-bootstrap"' has no exported member. Switching it to what I have above makes the error go away... but perhaps this is causing the issue?



    Template:



    <ngb-datepicker #dp (select)="onDateSelection($event)" [displayMonths]="2" [dayTemplate]="t" outsideDays="hidden">
    </ngb-datepicker>

    <ng-template #t let-date let-focused="focused">
    <span class="custom-day"
    [class.focused]="focused"
    [class.range]="isRange(date)"
    [class.faded]="isHovered(date) || isInside(date)"
    (mouseenter)="hoveredDate = date"
    (mouseleave)="hoveredDate = null">
    {{ date.day }}
    </span>
    </ng-template>

    <hr>

    <pre>From: {{ fromDate | json }} </pre>
    <pre>To: {{ toDate | json }} </pre>


    Component:



    import { Component, OnInit } from '@angular/core';
    import { NgbCalendar } from '@ng-bootstrap/ng-bootstrap';
    import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';

    @Component({
    selector: 'ngbd-datepicker-range',
    templateUrl: './datepicker-range.html',
    styles: [`
    .custom-day {
    text-align: center;
    padding: 0.185rem 0.25rem;
    display: inline-block;
    height: 2rem;
    width: 2rem;
    }
    .custom-day.focused {
    background-color: #e6e6e6;
    }
    .custom-day.range, .custom-day:hover {
    background-color: rgb(2, 117, 216);
    color: white;
    }
    .custom-day.faded {
    background-color: rgba(2, 117, 216, 0.5);
    }
    `]
    })
    export class NgbdDatepickerRange {

    hoveredDate: NgbDate;

    fromDate: NgbDate;
    toDate: NgbDate;

    constructor(calendar: NgbCalendar) {
    this.fromDate = calendar.getToday();
    this.toDate = calendar.getNext(calendar.getToday(), 'd', 10);
    }

    onDateSelection(date: NgbDate) {
    if (!this.fromDate && !this.toDate) {
    this.fromDate = date;
    } else if (this.fromDate && !this.toDate && date.after(this.fromDate)) {
    this.toDate = date;
    } else {
    this.toDate = null;
    this.fromDate = date;
    }
    }

    isHovered(date: NgbDate) {
    return this.fromDate && !this.toDate && this.hoveredDate && date.after(this.fromDate) && date.before(this.hoveredDate);
    }

    isInside(date: NgbDate) {
    return date.after(this.fromDate) && date.before(this.toDate);
    }

    isRange(date: NgbDate) {
    return date.equals(this.fromDate) || date.equals(this.toDate) || this.isInside(date) || this.isHovered(date);
    }
    }


    I was able to implement this successfully in an outside project but when I inserted into this existing project I'm having issues. Any help would be much appreciated, I can't figure it out.










    share|improve this question

























      1












      1








      1








      I'm using Angular Bootstrap to create a date range picker and although the code is exactly what's in their example, I get several errors, all stating "TypeError: Cannot read property 'equals' of undefined".



      This is the code I have: https://stackblitz.com/angular/ggxrvppdjeq



      The only real difference is that I'm importing NgbDate from another folder:
      import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';



      If I try to do it from @ng-bootstrap/ng-bootstrap as the example had, I get an error in VSCode: node_modules/@ng-bootstrap/ng-bootstrap"' has no exported member. Switching it to what I have above makes the error go away... but perhaps this is causing the issue?



      Template:



      <ngb-datepicker #dp (select)="onDateSelection($event)" [displayMonths]="2" [dayTemplate]="t" outsideDays="hidden">
      </ngb-datepicker>

      <ng-template #t let-date let-focused="focused">
      <span class="custom-day"
      [class.focused]="focused"
      [class.range]="isRange(date)"
      [class.faded]="isHovered(date) || isInside(date)"
      (mouseenter)="hoveredDate = date"
      (mouseleave)="hoveredDate = null">
      {{ date.day }}
      </span>
      </ng-template>

      <hr>

      <pre>From: {{ fromDate | json }} </pre>
      <pre>To: {{ toDate | json }} </pre>


      Component:



      import { Component, OnInit } from '@angular/core';
      import { NgbCalendar } from '@ng-bootstrap/ng-bootstrap';
      import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';

      @Component({
      selector: 'ngbd-datepicker-range',
      templateUrl: './datepicker-range.html',
      styles: [`
      .custom-day {
      text-align: center;
      padding: 0.185rem 0.25rem;
      display: inline-block;
      height: 2rem;
      width: 2rem;
      }
      .custom-day.focused {
      background-color: #e6e6e6;
      }
      .custom-day.range, .custom-day:hover {
      background-color: rgb(2, 117, 216);
      color: white;
      }
      .custom-day.faded {
      background-color: rgba(2, 117, 216, 0.5);
      }
      `]
      })
      export class NgbdDatepickerRange {

      hoveredDate: NgbDate;

      fromDate: NgbDate;
      toDate: NgbDate;

      constructor(calendar: NgbCalendar) {
      this.fromDate = calendar.getToday();
      this.toDate = calendar.getNext(calendar.getToday(), 'd', 10);
      }

      onDateSelection(date: NgbDate) {
      if (!this.fromDate && !this.toDate) {
      this.fromDate = date;
      } else if (this.fromDate && !this.toDate && date.after(this.fromDate)) {
      this.toDate = date;
      } else {
      this.toDate = null;
      this.fromDate = date;
      }
      }

      isHovered(date: NgbDate) {
      return this.fromDate && !this.toDate && this.hoveredDate && date.after(this.fromDate) && date.before(this.hoveredDate);
      }

      isInside(date: NgbDate) {
      return date.after(this.fromDate) && date.before(this.toDate);
      }

      isRange(date: NgbDate) {
      return date.equals(this.fromDate) || date.equals(this.toDate) || this.isInside(date) || this.isHovered(date);
      }
      }


      I was able to implement this successfully in an outside project but when I inserted into this existing project I'm having issues. Any help would be much appreciated, I can't figure it out.










      share|improve this question














      I'm using Angular Bootstrap to create a date range picker and although the code is exactly what's in their example, I get several errors, all stating "TypeError: Cannot read property 'equals' of undefined".



      This is the code I have: https://stackblitz.com/angular/ggxrvppdjeq



      The only real difference is that I'm importing NgbDate from another folder:
      import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';



      If I try to do it from @ng-bootstrap/ng-bootstrap as the example had, I get an error in VSCode: node_modules/@ng-bootstrap/ng-bootstrap"' has no exported member. Switching it to what I have above makes the error go away... but perhaps this is causing the issue?



      Template:



      <ngb-datepicker #dp (select)="onDateSelection($event)" [displayMonths]="2" [dayTemplate]="t" outsideDays="hidden">
      </ngb-datepicker>

      <ng-template #t let-date let-focused="focused">
      <span class="custom-day"
      [class.focused]="focused"
      [class.range]="isRange(date)"
      [class.faded]="isHovered(date) || isInside(date)"
      (mouseenter)="hoveredDate = date"
      (mouseleave)="hoveredDate = null">
      {{ date.day }}
      </span>
      </ng-template>

      <hr>

      <pre>From: {{ fromDate | json }} </pre>
      <pre>To: {{ toDate | json }} </pre>


      Component:



      import { Component, OnInit } from '@angular/core';
      import { NgbCalendar } from '@ng-bootstrap/ng-bootstrap';
      import { NgbDate } from '@ng-bootstrap/ng-bootstrap/datepicker/ngb-date';

      @Component({
      selector: 'ngbd-datepicker-range',
      templateUrl: './datepicker-range.html',
      styles: [`
      .custom-day {
      text-align: center;
      padding: 0.185rem 0.25rem;
      display: inline-block;
      height: 2rem;
      width: 2rem;
      }
      .custom-day.focused {
      background-color: #e6e6e6;
      }
      .custom-day.range, .custom-day:hover {
      background-color: rgb(2, 117, 216);
      color: white;
      }
      .custom-day.faded {
      background-color: rgba(2, 117, 216, 0.5);
      }
      `]
      })
      export class NgbdDatepickerRange {

      hoveredDate: NgbDate;

      fromDate: NgbDate;
      toDate: NgbDate;

      constructor(calendar: NgbCalendar) {
      this.fromDate = calendar.getToday();
      this.toDate = calendar.getNext(calendar.getToday(), 'd', 10);
      }

      onDateSelection(date: NgbDate) {
      if (!this.fromDate && !this.toDate) {
      this.fromDate = date;
      } else if (this.fromDate && !this.toDate && date.after(this.fromDate)) {
      this.toDate = date;
      } else {
      this.toDate = null;
      this.fromDate = date;
      }
      }

      isHovered(date: NgbDate) {
      return this.fromDate && !this.toDate && this.hoveredDate && date.after(this.fromDate) && date.before(this.hoveredDate);
      }

      isInside(date: NgbDate) {
      return date.after(this.fromDate) && date.before(this.toDate);
      }

      isRange(date: NgbDate) {
      return date.equals(this.fromDate) || date.equals(this.toDate) || this.isInside(date) || this.isHovered(date);
      }
      }


      I was able to implement this successfully in an outside project but when I inserted into this existing project I'm having issues. Any help would be much appreciated, I can't figure it out.







      angular






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      asked Jan 2 at 23:37









      TimTim

      1279




      1279
























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          The issue I think is that the ng-bootstrap version you are using, is not compatible with your angular version.
          You can find the compatibles here.



          For Angular 6 I used the 3.3.1 version. Here is the command:




          npm install --save @ng-bootstrap/ng-bootstrap@3.3.1







          share|improve this answer
























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            1 Answer
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            active

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            active

            oldest

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            active

            oldest

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            0














            The issue I think is that the ng-bootstrap version you are using, is not compatible with your angular version.
            You can find the compatibles here.



            For Angular 6 I used the 3.3.1 version. Here is the command:




            npm install --save @ng-bootstrap/ng-bootstrap@3.3.1







            share|improve this answer




























              0














              The issue I think is that the ng-bootstrap version you are using, is not compatible with your angular version.
              You can find the compatibles here.



              For Angular 6 I used the 3.3.1 version. Here is the command:




              npm install --save @ng-bootstrap/ng-bootstrap@3.3.1







              share|improve this answer


























                0












                0








                0







                The issue I think is that the ng-bootstrap version you are using, is not compatible with your angular version.
                You can find the compatibles here.



                For Angular 6 I used the 3.3.1 version. Here is the command:




                npm install --save @ng-bootstrap/ng-bootstrap@3.3.1







                share|improve this answer













                The issue I think is that the ng-bootstrap version you are using, is not compatible with your angular version.
                You can find the compatibles here.



                For Angular 6 I used the 3.3.1 version. Here is the command:




                npm install --save @ng-bootstrap/ng-bootstrap@3.3.1








                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 4 hours ago









                Elias K.Elias K.

                264




                264
































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