Angular路由守衛 canDeactivate

目的

離開頁面時,作出邏輯判斷
以ng-alain的項目爲基礎作演示
效果如圖:
test3git

關鍵代碼

定義一個CanDeactivateGuardServicegithub

export class CanDeactivateGuardService implements CanDeactivate<CanDeactivateComponent> {

    canDeactivate(component: CanDeactivateComponent,
                  route: ActivatedRouteSnapshot,
                  state: RouterStateSnapshot): Observable<boolean> | boolean {
        return component.leaveTip();
    }
}

在component中完成leaveTip方法typescript

leaveTip() {
  return Observable.create((observer) => {
    if(!this.isSave){
      this.modalService.confirm({
        nzTitle: '頁面離開提示',
        nzContent: '數據還沒有保存,是否離開該頁面?',
        nzOnOk: async () => {
            observer.next(true);
        },
        nzOnCancel: () => {
            observer.next(false);
        }
      });
    }
    else{
      observer.next(true);
    }
  });
}

設置ng-alain的ReuseTabMatchMode,排除can-deactivate這個目標路由app

this.reuseTabService.mode = ReuseTabMatchMode.URL;
const excludes = new Array<RegExp>();
excludes.push(new RegExp('/can-deactivate'));
this.reuseTabService.excludes = excludes;

示例代碼

示例代碼async

參考資料

feat(abc: reuse-tab): new reuse-tab component plans!this

拓展閱讀

Angular路由守衛code

相關文章
相關標籤/搜索