I have a Reactive Form with FormArray (like an Game Roster with basic information like Start At, Prize, Duration and also with a Roster (array of players)
I display array of players like this:
<input
class="form-control"
formControlName="prize"
type="number"
/>
<table>
<tr
*ngFor="let player of form.players"
[form]="player"
appPlayer
>
</tr>
<table>
And custom component
@Component({
selector: 'tr[appPlayer]',
templateUrl: './player.component.html',
changeDetection: ChangeDetectionStrategy.Default,
providers: [
ReceiptItemReactiveService
]
})
export class AppPlayerRow {
@Input()
player: FormGroup;
...
So far so good. Inside AppPlayerRow I need display cells, indeed. Though, they must be wrapped inside an element with [FormGroup] directive. As far as I know HTML5 allows only td/th element inside TR. So I did it with this workaround:
player.component.html:
<ng-container [formGroup]="player" >
<td class="order" >
{{ plater.controls.order?.value }}
</td>
<td class="desc" >
<input
class="form-control"
formControlName="name"
/>
....
In browser all is rednered good, ng-container is not rendered, everything seems to be valid. I am just trying to confirm if I am not missing some caveat.
Thansk!
It is totally okay to use the <ng-container>
, however, the container just helps you to increase the context in which you use Angular directives. More like you could have a *ngFor
directive in the outer context and still use *ngIf
in the looped *ngFor
by using the ng-container to group elements when there is no suitable host element for the directive. Refer to the Angular Guide .
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