Angular: Stop additional input from being processed in Child Component and disable Change Detection

Is there a way to limit the number of inputs a child input in Angular receives before stopping further changes? For example, I want the child input to accept only 3 updates from ngOnChanges and then ignore any subsequent ones.

I am currently using an input count flag in the child component's ngOnChanges method. However, I am wondering if there is a better approach, either in the parent or in the child component itself, to achieve this limitation on input changes?

Potential Improvement

ngOnChanges() {
    if (inputCount < 3) { 
       this.customerName = ....
       this.product = ....
}
angulartypescriptangular8angular-componentsangular-changedetection

Answer №1

To achieve this functionality, you can utilize a setter and getter method as shown below:

@Input() 
get customInput() {return this._customInput;}
set customInput(value: any) {
  if(this._customInputCount >= 3) {
    return;
  }
  this._customInput = value;
  this._customInputCount++;
}
private _customInput: any;
private _customInputCount = 0;

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