Custom HTML binding in expanding rows of Angular 2 DataTables

I am currently working on implementing a data table feature that allows for an extended child row to be displayed when clicking the + icon. This row will show additional data along with some buttons that are bound via AJAX before transitioning to Angular 2.

Each row will have a child row for additional actions and information.

Below is the code snippet for the component:

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

declare var $: any;

@Component({

  selector: 'sa-datatable',
  template: `
      <table class="dataTable {{tableClass}}" width="{{width}}">
        <ng-content></ng-content>
      </table>
`,
  styles: [
    require('smartadmin-plugins/datatables-bundle/datatables.min.css')
  ]
})
export class DatatableComponent implements OnInit {

  @Input() public options:any;
  @Input() public filter:any;
  @Input() public detailsFormat:any;

  @Input() public paginationLength: boolean;
  @Input() public columnsHide: boolean;
  @Input() public tableClass: string;
  @Input() public width: string = '100%';

  constructor(private el: ElementRef) {
  }

  ngOnInit() {
    Promise.all([
      System.import('script-loader!smartadmin-plugins/datatables-bundle/datatables.min.js'),
    ]).then(()=>{
      this.render()

    })
  }

  render() {
    let element = $(this.el.nativeElement.children[0]);
    let options = this.options || {}
    
    // Rest of the component logic...

}

To use the component in another template HTML file:

<div  class="well">

    <h1>Store Items</h1>
    <sa-datatable [options]="options"
                  [detailsFormat]="detailsFormat"
                  tableClass="display projects-table table table-striped table-bordered table-hover"
                  width="100%">
        <thead>
        <tr>
            <th data-hide="phone"></th>
            <th data-hide="phone">Item</th>
            <th data-class="expand"><i
                    class="fa fa-fw fa-user text-muted hidden-md hidden-sm hidden-xs"></i>
                UUID
            </th>
            <th data-hide="phone"><i
                    class="fa fa-fw fa-phone text-muted hidden-md hidden-sm hidden-xs"></i>
                Item ID
            </th>
            <th>Profit</th>
            <th data-hide="phone,tablet"><i
                    class="fa fa-fw fa-map-marker txt-color-blue hidden-md hidden-sm hidden-xs"></i>
                FTP Status
            </th>            
        </tr>
        </thead>

    </sa-datatable>


</div>

The problem arises when trying to bind the button action within the detailsFormat method after expanding the row by clicking the + icon. The end goal is to have the button binding work as expected even after expanding the row. Any suggestions on how to achieve this functionality?

Answer №1

We encountered the same issue and after much trial and error, we found a solution.

The trick was to work with the detailsFormat, which only references the HTML. By creating a tag and inserting the component inside it, then returning the div to be attached to the datatable, we were able to resolve the problem effectively. It may seem simple, but it required some effort. The results are impressive!

Within the dataTable.component, there is an Input() detailComponent that you can send from your HTML page as [detailComponent]="details".

In the section where detailsFormat is called, use the following code:

 row.child(detailComponent.location.nativeElement).show();

Next, in the file containing the detailFormats function, implement the following:

public detailFormats () {

    var componentFactory = this.resolver.resolveComponentFactory(ProjectDetailsComponent);
    var newNode = document.createElement('div');
    newNode.id = 'detailHolder';
    var ref = componentFactory.create(this.injector, [], newNode);
    this.app.attachView(ref.hostView);
    return ref;

}

"YourComponent" should contain the HTML that will be displayed when the user clicks the + button.

If you need to pass data to the component, add the following line before the row in the DataTable.component:

(detailComponent.instance).model = row.data();

A similar approach can be found at: https://angular.io/guide/dynamic-component-loader

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