Angular Master Detail Grid
A technical challenge, not a big of interest
Example online
https://av-components.scapp.io
Source code
https://github.com/marco76/av-components
Autoconfigurable Data Grid with detail
In one project I had the opportunity to develop a Data Grid with expandable rows. We used the standard Angular Material as base for the development.
The original DataTable don't support expandable rows, with a bit of research and many trial and error we succeeded to build a pretty good component.

With a very ambitious approach we decided to automatically generate the forms of the grid (dates, booleans, selects, texts) using an optional JSON configuration object.
The component don't seem to attract a lot of interest outside of the project. I think that not many projects are based on Angular Material. Material is not easy to implement compared to other frameworks/guidelines/libraries and don't give a lot of freedom to the developer.
I personally enjoy using it for company solutions but I'm not sure I would choose Material for a public website.
If somebody is blocked trying to solve the same problem here he can find some code fragments.
Call on the cell that open the template:
``` javascript onDetailGrid(row: any, data: string, column: AvTableColumnConfig) {
row.selectedTemplate = this.gridTemplate; if (typeof row.isExpanded === 'undefined') { row.isExpanded = false; }
row.isExpanded = !row.isExpanded; row.selectedColumn = data; }
Definition of the template in the html:
``` html
<ng-template #panelTemplate let-element>
<div class="mat-row mat-row-detail" [@detailExpand] style="overflow: hidden">
<av-table-detail-panel [data]="dataColumns" [item]="element" *ngIf="detailData">
</av-table-detail-panel>
</div>
</ng-template>``` html
[configuration]="getDetailConfiguration(element.selectedColumn)" *ngIf="detailData">