Angular2 doesn't work Custom Reuse Strategy with Lazy module loading

Question

I tried to use custom reuse strategy in my angular2 project, but I found it doesn\'t work with lazy module loading. Anyone who know about this? My project i

Answer 1

Use this one. It use component name as the key to store and retrieve the Handles.

import {ActivatedRouteSnapshot, DetachedRouteHandle, RouteReuseStrategy} from '@angular/router';

export class CustomReuseStrategy implements RouteReuseStrategy {


  handlers: { [key: string]: DetachedRouteHandle } = {};


  shouldDetach(route: ActivatedRouteSnapshot): boolean {
    return true;
  }

  store(route: ActivatedRouteSnapshot, handle: DetachedRouteHandle): void {
    this.handlers[this.getKey(route)] = handle;
  }

  shouldAttach(route: ActivatedRouteSnapshot): boolean {
    return !!route.routeConfig && !!this.handlers[this.getKey(route)];
  }

  retrieve(route: ActivatedRouteSnapshot): DetachedRouteHandle {
    if (!route.routeConfig) {
      return null;
    }
    return this.handlers[this.getKey(route)];
  }

  shouldReuseRoute(future: ActivatedRouteSnapshot, curr: ActivatedRouteSnapshot): boolean {
    return curr.routeConfig === future.routeConfig;
  }

  private getKey(route: ActivatedRouteSnapshot) {
    let key: string;
    if (route.component) {
      key = route.component['name'];
    } else {
      key = route.firstChild.component['name'];
    }
    return key;
  }

}