In this lesson we are going to learn how to use AngularFire 2 to query objects, and read them from the Firebase realtime database. constcourse$: FirebaseObjectObservable<any> = af.database.object('courses/-KT0LsbuhHZGr5F4v7OV'); course$.subscribe((c)=>{ console.log("c", JSON.strin...
Angular does not use a Model view controller, instead, it uses a component-based architecture for development. This is why it is possible to split angular apps into independent functional components. Support from Google If you look at the documentation of Angular, you will find out how much fo...
In this lesson we are going to use AngularFire 2 for the first time. We are going to configure the AngularFire 2 module, inject the AngularFire service in our service layer and use it do our first Firebase query: we are going to retrieve a list of objects from the database. Install:...
The “Leveraging Salesforce Using a Client Written In Vue.js” article introduced a client application using the Vue.js framework to further interact with the Spring Boot service. Using Vue.js, the resulting client was not only able to read data from Salesforce but also processed and displayed...
Module not found: Error: Can't resolve 'rxjs/operator/toPromise' in 'C:\Users\gazala\Desktop\node_modules@angular\forms\src' ERROR in C:/Users/gazala/Desktop/node_modules/@angular/core/src/util/lang.js Module not found: Error: Can't resolve 'rxjs/symbol/observable' in 'C:\Users\gazala...
In this tutorial we are going to learn how we can to configure an exit guard in the Angular 2 Router. We are going to learn how to use a CanDeactivate route guard to ask the user if he really wants to exist the screen, giving the user to for example save data that was not yet pe...
Observable.interval(500) .map(x => this.getRandomData()) .subscribe(data => this.updateGraph(data)); When testing a page where this code is running, protractor will time out. It waits for the page to finish loading and thinks this script will exit sometime (when in fact it runs fore...
我添加了angular universal。现在,当我运行npm run dev:ssr或npm run build:ssr && npm run serve:ssr时,我的应用程序将拒绝打开,并在控制台中抛出NetworkError响应。我注意到这个错误发生在通过类'constructors(){..}‘发送的http请求的次数。我浏览了几个解决方案,但没有找到我做错了什么的线索。我的后台是...
import { Injectable } from "@angular/core"; import { Resolve, ActivatedRouteSnapshot, RouterStateSnapshot } from"@angular/router"; import { Observable } from"rxjs"; import { Store } from"@ngrx/store"; import { AppState } from"../reducers"; ...
Hi. I need to get a current presented page in Shell. I see a property PresentedPage in runtime. But can't see this property in code. How can I get this? Note: I don't need a route, I need real page objectAll replies (4)...