Angular: A Guide to Displaying HTML Content from a TypeScript File

Question

Angular: A Guide to Displaying HTML Content from a TypeScript File

I implemented jQuery dataTable to showcase data on a list view. In my attempt to populate data into the dataTable, I used the following approach.

Within users.component.ts:

getUsers() {
    this.UserService.getUsersList()
        .subscribe(
        success => {
            this.userList = success;
            $("#userTable").find('tbody').empty();
            var dataClaims = this.userList;
            for (let i = 0; i < dataClaims.length; i++) {
                $('#userTable').dataTable().fnAddData([
                    (i + 1),
                    dataClaims[i].name,
                    dataClaims[i].email,
                    dataClaims[i].contact_number,
                    dataClaims[i].address,
                    '<a [routerLink]="[' +"'"+"../../user/update" +"'" +']"' + ' class="fa fa-1x fa-pencil-square-o"></a>',
                ]);
            }
        }
        );
}

The above function performs correctly, and the dataTable operates without any problems.

However, [routerLink] does not get converted to HTML as expected. It displays this way in the output:

<a [routerlink]="['../../user/update']" class="fa fa-1x fa-pencil-square-o"></a>

Ideally, it should be transformed into the following format:

<a _ngcontent-c0="" ng-reflect-router-link="user/update" href="/user/update" class="fa fa-1x fa-pencil-square-o"></a>

Could anyone offer guidance on how to convert [routerLink] to a standard link when rendering HTML data from a .ts file? Thank you.

angular typescript angular2-template

Answer 1

Answer №1

If you're interested in utilizing the power of dataTable in your project, the following tip might come in handy:

The key is to develop a Directive that contains all your dataTable logic.

import {Directive, ElementRef} from '@angular/core';
import {Input, OnInit}         from '@angular/core';


import { JqueryDataTableEvent } from './jquery-datable-event';
import 'jquery.dataTables';

declare var jQuery:any;

@Directive({
    selector: '[jqueryDatatable]'
})

export class JqueryDatatableDirective implements OnInit {
    private _datatable : any;

    @Input()
    jqueryDatatable: any;

    @Input()
    dataTableEvents: JqueryDataTableEvent[];

    constructor(private _element: ElementRef) {}

    ngOnInit() {
        this.applyOptions();
        this.applyEvents();
    }

    applyOptions()
    {
        if (!this.jqueryDatatable)
            console.error("Empty options array was passed to initialize jqueryDatatable.");

        this._datatable = jQuery(this._element.nativeElement).DataTable( this.jqueryDatatable || {} );

    }

    applyEvents() {
        this.dataTableEvents.map((event)=> {
            this._datatable.on(event.eventName, event.selector, event.callback)
        });
    }
}

Check out this example created by @DarioN1:

https://plnkr.co/edit/t0Zwc3AtQTt98XvIirZ9?p=preview

Answer 2

If you're interested in utilizing the power of dataTable in your project, the following tip might come in handy:

The key is to develop a Directive that contains all your dataTable logic.

import {Directive, ElementRef} from '@angular/core';
import {Input, OnInit}         from '@angular/core';


import { JqueryDataTableEvent } from './jquery-datable-event';
import 'jquery.dataTables';

declare var jQuery:any;

@Directive({
    selector: '[jqueryDatatable]'
})

export class JqueryDatatableDirective implements OnInit {
    private _datatable : any;

    @Input()
    jqueryDatatable: any;

    @Input()
    dataTableEvents: JqueryDataTableEvent[];

    constructor(private _element: ElementRef) {}

    ngOnInit() {
        this.applyOptions();
        this.applyEvents();
    }

    applyOptions()
    {
        if (!this.jqueryDatatable)
            console.error("Empty options array was passed to initialize jqueryDatatable.");

        this._datatable = jQuery(this._element.nativeElement).DataTable( this.jqueryDatatable || {} );

    }

    applyEvents() {
        this.dataTableEvents.map((event)=> {
            this._datatable.on(event.eventName, event.selector, event.callback)
        });
    }
}

Check out this example created by @DarioN1:

https://plnkr.co/edit/t0Zwc3AtQTt98XvIirZ9?p=preview

Answer 3

Answer №2

The [routerLink] attribute is not functioning properly. To handle this, you should utilize the innerHTML feature.

In the ts file:-

 tool = '<a href="../../user/update" class="fa fa-1x fa-pencil-square-o">View</a>';

Within the html file:-

<div [innerHTML]="tool"></div>

Resulting Output:-

<div _ngcontent-c1=""><a href="../../user/update" class="fa fa-1x fa-pencil-square-o">View</a></div>

Answer 4

The [routerLink] attribute is not functioning properly. To handle this, you should utilize the innerHTML feature.

In the ts file:-

 tool = '<a href="../../user/update" class="fa fa-1x fa-pencil-square-o">View</a>';

Within the html file:-

<div [innerHTML]="tool"></div>

Resulting Output:-

<div _ngcontent-c1=""><a href="../../user/update" class="fa fa-1x fa-pencil-square-o">View</a></div>

Answer 5

Answer №3

In order to ensure the safety of your HTML in Angular, you need to follow these steps:

First, import the DomSanitizer module from Angular documentation;
Then, inject DomSanitizer in the constructor of your Component;
Lastly, make sure to wrap your link using the bypassSecurityTrustHtml function.

 import { DomSanitizer } from '@angular/platform-browser';
 
 export class UserComponent {
   constructor(private sanitizer: DomSanitizer) {}

   getUsers() {
     this.UserService.getUsersList()
      .subscribe(
        success => {
          this.userList = success;
          $("#userTable").find('tbody').empty();
          var dataClaims = this.userList;
          for (let i = 0; i < dataClaims.length; i++) {
              $('#userTable').dataTable().fnAddData([
                  (i + 1),
                  dataClaims[i].name,
                  dataClaims[i].email,
                  dataClaims[i].contact_number,
                  dataClaims[i].address,
                  this.sanitizer.bypassSecurityTrustHtml('<a [routerLink]="[' +"'"+"../../user/update" +"'" +']"' + ' class="fa fa-1x fa-pencil-square-o"></a>'),
              ]);
          }
      }
      );
   } 
 }

Answer 6

In order to ensure the safety of your HTML in Angular, you need to follow these steps:

First, import the DomSanitizer module from Angular documentation;
Then, inject DomSanitizer in the constructor of your Component;
Lastly, make sure to wrap your link using the bypassSecurityTrustHtml function.

 import { DomSanitizer } from '@angular/platform-browser';
 
 export class UserComponent {
   constructor(private sanitizer: DomSanitizer) {}

   getUsers() {
     this.UserService.getUsersList()
      .subscribe(
        success => {
          this.userList = success;
          $("#userTable").find('tbody').empty();
          var dataClaims = this.userList;
          for (let i = 0; i < dataClaims.length; i++) {
              $('#userTable').dataTable().fnAddData([
                  (i + 1),
                  dataClaims[i].name,
                  dataClaims[i].email,
                  dataClaims[i].contact_number,
                  dataClaims[i].address,
                  this.sanitizer.bypassSecurityTrustHtml('<a [routerLink]="[' +"'"+"../../user/update" +"'" +']"' + ' class="fa fa-1x fa-pencil-square-o"></a>'),
              ]);
          }
      }
      );
   } 
 }

Angular: A Guide to Displaying HTML Content from a TypeScript File

Answer №1

Answer №2

Answer №3

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