Utilizing a custom function declared within the component to handle changes in Angular's ngOnChanges

Although it may seem like a simple question, I'm struggling to find a solution. Here's the issue at hand:

In my Angular Component, there's a function that I need help with.

export class RolesListComponent implements OnInit, OnChanges {

    @ViewChild(DxDataGridComponent) dataGrid: DxDataGridComponent;

    ngOnChanges(changes: SimpleChanges): void {
        this.refresh();
    }

    refresh(){
        this.dataGrid.instance.refresh();
    }

}

Unfortunately, calling this.refresh() inside ngOnChanges doesn't work and throws an error stating that refresh is undefined.

Is there a way to either directly execute the code within the function in ngOnChanges, or fix the function itself?

Answer №1

As stated in the documentation

ngOnChanges is used to respond when Angular resets data-bound input properties.

In simple terms, if you have any @input properties and you want to detect changes to those properties, you can utilize ngOnChanges. If there are no input properties in your component, this may explain why ngOnChanges is not being executed.

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