angular2-services

问题 service file import { Observable } from 'rxjs/Rx'; import { Http,Response} from '@angular/http'; import { Injectable } from '@angular/core'; import 'rxjs/add/operator/Map'; @Injectable() export class VideoService { private geturl = '/api/videos'; constructor(private _http:Http) { } getvideos() { return this._http.get(this.geturl).map((response:Response) => { response.json() }); } } here is where the subscribe method showing this error import { VideoService } from '../video.service'; import {

问题 I know this has been asked before but I can't seem to find the answer, how to read status code from http..? this.bookingService.save(this.param) .subscribe( data => swal({ "title": "Succes!", "text": "Your data saved", "type": "success", "confirmButtonClass": "btn btn-secondary m-btn m-btn--wide" }), error => console.log('error'), () => this.router.navigate('Succes') ); 回答1: You can get the status code from the error, this.bookingService.save(this.param).subscribe( data =>{ console.log(data);

问题 I've just run into a problem with a lazy-loaded module where parent and child module both require the same service but create an instance each. The declaration is identical for both, that is import { MyService } from './my.service'; ... @NgModule({ ... providers: [ MyService, ... ] }); and here's the routing setup export parentRoutes: Routes = [ { path: ':id', component: ParentComponent, children: [ { path: '', component: ParentDetailsComponent }, { path: 'child', loadChildren: 'app/child

问题 As the title explains it, the router object become undefined when it's called inside a subscribe member. Let me show you some code: export class AuthComponent implements OnInit { password = ''; email = ''; constructor( private _router: Router, private authService: AuthService ) { } sendLogin(): void { this.authService.login(this.email, this.password) .subscribe(function(token){ console.log("Success Response" + token) this.token = token // TOKEN Here is good // now I want to change my page,

问题 In my Angular 2 project I have a custom function goToObject(objectType:string, objectID: number) that I use to navigate to different objects throughout a couple of different components in my application. The function looks as follows: goToObject(objectType:string, objectID: number) { this._router.navigate([type, id]); } I was wondering if there is a way to provide this function throughout my complete project, without having to define it in each component separately. What makes it harder I

问题 I Have Create a DB in that I am Having Multiple tables having Relationship between them. When a try to get data from my WEb app i get this error "'Self referencing loop detected with type 'System.Data.Entity.DynamicProxies.PrescriptionMaster_2C4C63F6E22DFF8E29DCAC8D06EBAE038831B58747056064834E80E41B5C4E4A'. Path '[0].Patient.PrescriptionMasters" I coudn't get why i am getting this error, and when i remove the relationships between tables i get proper data From it. I have Tried other solutions

问题 Hi I have stored the below data "permission": { "1000": "CREATE_DISBMT_WORKFLOW", "1001": "EDIT_DISBMT_WORKFLOW", "1002": "EDIT_UPLOAD_PHOTO_DISBMT_WORKFLOW", "1003": "EDIT_UPLOAD_CONFIRMED_DISBMT_WORKFLOW", "1004": "EDIT_VERIFIED_DISBMT_WORKFLOW", "1005": "VIEW_DISBMT_WORKFLOW", "1006": "DELETE_DISBMT_WORKFLOW" } in local storage now I want to create a function on which I will pass CREATE_DISBMT_WORKFLOW if it's there in above permission object that it should return true else false what is

问题 Is it possible to have multiple level nesting for angular routing. I am trying to achieve below but it says [Child routes are not allowed for "/cash/..". Use "..." on the parent's route path]. Intended route /storeselector /forms - shows all forms /forms/cash/ - user select cash form from list of forms and on load it will shows all orders /forms/cash/id:1/ shows order details /forms/cash/edit/1 edit order 1 below is my code. app component @Component({ selector : 'forms-app', templateUrl :

问题 Im building a dummy login for an app, and I need to check for an instance of the user logging in, within an array I have some mock data import { User } from './user'; export const USERS: User[] = [ {username: 'Seth', password: 'youwillneverknow'}, {username: 'Peter', password: 'iforgot'}, {username: 'Frank', password: 'test123'}, ]; Which I use in my user.service file import { Injectable } from '@angular/core'; import { User } from './user'; import { USERS } from './users.mock'; @Injectable()

问题 There are 2 services: DataService - gets data from the server CacheService - subscribes to DataService and holds mapped data and component ComponentA - Injects CacheService and has foo function that handles cached data My question is - How do I ensure that my CacheService is done with data when my foo function gets called . Current solution that I kinda like but am not sure if there isn't some better Angular 2 way. Done with Rx.Observables My solution (Code is simplified): export class