Array
The Array rule simply confirms that the field's value is a valid array — nothing more. It's the right check for fields like a multi-select list of tags, a set of checked checkboxes, or a list of recipient email addresses, wherever the input needs to be a collection rather than a single value. This rule never validates how many items the array contains; pair it with the min or max rules when you also need to enforce a minimum or maximum item count.
#Directive Code Snippet
<!DOCTYPE html>
<html lang="en">
...
<form (ngSubmit)="onSubmit(form)" #form="ngForm">
<input array type="text" name="<name>" [(ngModel)]="<name>" #<name>="ngModel">
<ng-absolute-validator [formInstance]="<name>"></ng-absolute-validator>
</form>
...
</html>
#Chain Rule Code Snippet
<!DOCTYPE html>
<html lang="en">
...
<form (ngSubmit)="onSubmit(form)" #form="ngForm">
<input [Rule]="array" type="text" name="<name>" [(ngModel)]="<name>" #<name>="ngModel">
<ng-absolute-validator [formInstance]="<name>"></ng-absolute-validator>
</form>
...
</html>
#Reactive Form Code Snippet
//component.ts
export class ReactiveComponent{
public form !: FormGroup;
constructor(
private fb : FormBuilder,
private rv : ReactiveValidator,
){this.generteForm()}
generteForm(){
this.form = this.fb.group({
<name> : ['',this.rv.map('array',<CUSTOM_MESSAGE>)],
})
}
}
//component.html
<!DOCTYPE html>
<html lang="en">
...
<form [formGroup]="form">
<input type="text" name="<name>" formControlName="<name>">
<ng-absolute-validator [formInstance]="form.get(<name>)"></ng-absolute-validator>
</form>
...
</html>