Update on numeric inputs

bizmatch/src/app/pages/subscription/edit-business-listing/edit-business-listing.component.ts

@@ -146,4 +146,17 @@ export class EditBusinessListingComponent {
   changeListingCategory(value: 'business' | 'commercialProperty') {
     routeListingWithState(this.router, value, this.listing);
   }
+  onNumericInputChange(value: string, modelProperty: string): void {
+    const newValue = value === '' ? null : +value;
+    this.setPropertyByPath(this, modelProperty, newValue);
+  }
+
+  private setPropertyByPath(obj: any, path: string, value: any): void {
+    const keys = path.split('.');
+    let target = obj;
+    for (let i = 0; i < keys.length - 1; i++) {
+      target = target[keys[i]];
+    }
+    target[keys[keys.length - 1]] = value;
+  }
 }