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How to create a dynamic html template with template literals and *ngFor in Angular


By : Malypko
Date : September 05 2020, 01:00 PM
like below fixes the issue I have been working on a toast component which will accept html tags as string. Hence I need to loop through below errorMsgs array and build a list dynamically, but the problem is I have a *ngFor inside that and it's looping the array, but I'm not able to print "msg" in the template. , Finally I solved it using ES6 only.
code :
const errorMsgs = ['Not Found', 'Server Error'];

private getMessagesAsHtml(errorMsgs: string[]){
     return `
           <ul>
              ${errorMsgs.map(msg => `
                  <li> ${msg} </li>
                `)}
           </ul>
        `;
     }


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Accessing local variable in HTML template using *ngFor in Angular 2


By : Longder
Date : March 29 2020, 07:55 AM
To fix the issue you can do I am trying to use ngFor in Angular 2, sample code below , *ngFor and *ngIf on the same tag is not supported.
Use instead:
code :
  <ng-container *ngFor="let facet of facet_data">
    <a class="collection-item" (click)="setToSearchBarWithFilter(facet.category)" *ngIf="facet.count > 0">
    {{facet.category}}<span class="badge">{{facet.count}}</span> 
    </a>
  </ng-container>
  <template ngFor let-facet [ngForOf]="facet_data">
    <a class="collection-item" (click)="setToSearchBarWithFilter(facet.category)" *ngIf="facet.count > 0">
    {{facet.category}}<span class="badge">{{facet.count}}</span> 
    </a>
  </template>

Angular 6: Making events equally dynamic on *ngFor-dynamically-generated-template-elements


By : Anand Kumar
Date : March 29 2020, 07:55 AM
it should still fix some issue Normally in Angular to show and hide things I create a variable in the component, create a mouseover-mouseout event on the element that toggles that variable, and place an ngIf on any element that I want effected by that event (display/hide). , Try something like this
create empty array
code :
tooltipHover=[]

<tr *ngFor="let object of this.data.arrayOfObjects; let i = index">
    <td (mouseenter)="tooltipHover[i]=!tooltipHover[i]" (mouseleave)="tooltipHover[i]=!tooltipHover[i]" class="id-pointer">
      {{object.friends.length}}
        <div *ngIf="this.tooltipHover[i]" class="tooltip">
Tooltip:
more info here    
  </div>
    </td>
    <td>{{object.name}}</td>
    <td>{{object.gender}}</td> 
  </tr>

Angular dynamic template rendering like ui grid cell template (template declared in colDefs of parent)


By : user2415031
Date : March 29 2020, 07:55 AM
To fix this issue Check out StackBlitz demo that I created for you. It's leverage the render function cellFn in which you can customize template as you please. Also notice the usage of safeHtml pipe to render html inside template.
EDIT: As the OP stated in comments, he also wants to use Angular directives etc. in template. So here is the StackBlitz demo for this purpose.

How to nest html when looping through array using Angular + ngFor / ng-template?


By : Anton
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I'm trying to output html in the following format for an array , Create a matrix from your array
code :
private weekDaysHeaderArr = [ /*Your elements here*/ ]
private groupSize: number = 7;
get matrix(){ 
  return this.weekDaysHeaderArr.map((item, index, arr)=>{
    return index % this.groupSize === 0 ? arr.slice(index, index + this.groupSize) : null; 
  })
  .filter((item) => { return item; });
}
<div class="row" *ngFor="let week of matrix">
    <div class="col-md-auto" *ngFor="let day of week">
    </div>
</div>

Dynamic template reference variable inside ngFor (Angular 2)


By : Infotech
Date : March 29 2020, 07:55 AM
I wish this helpful for you Template reference variables are scoped to the template they are defined in. A structural directive creates a nested template and, therefore, introduces a separate scope.
So you can just use one variable for your template reference
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