The data in DataTables is loading correctly, however, the buttons and sorting features are not operating as intended within Angular 4

I am currently working on an Angular 4 project where I need to display data in a table format using the DataTables library. While I have successfully implemented the hardcoded examples provided by DataTables with all the buttons functioning as expected, I am encountering issues when trying to display dynamic data fetched from an SQL database via a service.

Here is a snippet of my HTML code:

<table id="example" class="display nowrap" style="width:100%">
  <thead>
    <tr>
        <th>Name</th>
        <th>Age</th>
        <th>Zip Code</th>
        <th>Submitted Date/Time</th>
        <th>Submission Status</th>
        <th>Extra</th>
    </tr>
</thead>
<tbody>
  <tr *ngFor="let p of participants">
      <td>{{ p.firstName }} {{ p.middleName }} {{ p.lastName }}</td>
      <td>{{ p.age }}</td>
      <td>{{ p.zip }}</td>
      <td>{{ p.createdDateTime | date:'short' }}</td>
      <td>{{ p.projectStatus }}</td>
      <td>Ask</td>
   </tr>
</tbody>

In addition, this is an excerpt from my component.ts file:

import { ParticipantService } from './../../_services/participant.service';
import { Component, OnInit } from '@angular/core';
declare const $;

@Component({
  selector: 'app-participant-list-demo',
  templateUrl: './participant-list-demo.component.html',
  styleUrls: ['./participant-list-demo.component.css']
})
export class ParticipantListDemoComponent implements OnInit {
  participants: any[];

  constructor(
    private participantService: ParticipantService
  ) { }

  ngOnInit() {
    this.loadStyles();
    this.loadParticipants();
  }

  loadParticipants() {
    this.participantService.getAll().subscribe(participants => {
      this.participants = participants;
    });
  }

  loadStyles() {
    $(function () {
      $('#example').DataTable( {
        dom: 'Bfrtip',
        buttons: [
            'copy', 'csv', 'excel', 'pdf', 'print'
        ]
    } );
    });
  }
}

Despite attempting to use various techniques such as Zones, I have not been able to achieve functionality for the DataTables buttons with dynamic data. How can I properly integrate my dynamically loaded data into DataTables to ensure the buttons work as intended?

Answer №1

After some investigation, I discovered that the datatables styles and the list of participants are being loaded simultaneously within the ngOnInit method. This simultaneous loading is causing issues for me. One temporary workaround I found was to use the setTimeOut() function to ensure that the participants load first before the datatables styles, with a delay of around 300 ms. However, this solution is not ideal and I am still in search of a more effective approach.

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