angular-promise

问题 I'm expecting some weird situations where "this" is null inside a component. SO far, I saw it in two situations: 1) When the promise is rejected: if (this.valForm.valid) { this.userService.login(value).then(result => { if(result.success){ this.toasterService.pop("success", "Exito", "Inicio de session correcto"); this.sessionService.setUser(result.data); this.router.navigateByUrl('home'); } else{ this.error = result.code; } },function(error){ console.log("ERROR: " + error); this.error = "ERROR

问题 Updated. I am Following Angular2 tutorial from https://angular.io/docs/ts/latest/tutorial/toh-pt4.html Here is the call to HeroService from heroes.component.ts, Heroes.component.ts import { Component , OnInit } from '@angular/core'; import { Hero } from './hero'; import { HeroService } from './hero.service'; @Component({ selector: 'my-heroes', template: ` <h2>My Heroes</h2> <ul class="heroes"> <li *ngFor="let hero of heroes"> <span class="badge">{{hero.id}}</span> {{hero.name}} </li> </ul> `,

问题 I have a list of records I want to process in sequence. A "root" promise needs to be passed back to be added as part of another parent chain. processCategories = function(categories) { var deferred = $q.defer(); var promise = deferred.promise; // Process each category in sequence angular.forEach(categories, function (data, classIndex) { promise = promise.then(doSomethingAndReturnAPromise(categories, data, classIndex)); if (classIndex === categories.length - 1) { // Last category has been

问题 This is the pseudo scenario | then (items) | then (items, actions) getItems() | getActions(for:items) | apply(actions -> items) :promise | :promise | model <= items | | :synchronous So in words: I need to get a list of global items. Fine. Items fetched. Make a request for actions that user has taken over previously fetched items. Fine. Actions fetched. Apply actions to items list. Put items on the model and display in view. This is somewhat the code I'm using return itemsResource .getItems

问题 I am facing a very strange issue with Ionic Storage. I have a method that reads a value from the storage and returns an a promise containing an object corresponding to that: private getAuthorizedOptions(): Promise<RequestOptions> { return this._storage.get('bdAccessToken') .then(v => { console.log("access token: ", v); let token = v; let header = new Headers({ 'Authorization': 'Bearer ' + token }); let ro = new RequestOptions({ headers: header }); let options = new RequestOptions(); if

问题 I use the following factory to fetch data from API and store it to local variable called apiData. app.factory('MyFactory', function($resource, $q) { var apiData = []; var service = {}; var resource = $resource('http://example.com/api/sampledata/'); service.getApiData=function() { var itemsDefer=$q.defer(); if(apiData.length >0) { itemsDefer.resolve(apiData); } else { resource.query({},function(data) { apiData=data; itemsDefer.resolve(data) }); } return itemsDefer.promise; }; service.add

问题 I want to return a $q instance so that if clients don't call 'then' with a reject handler, then a default one runs. E.g. assume the default is to alert(1) Then mypromise.then(function(result){...}) will alert 1 but mypromise.then(null, function(reason){alert(2)}) will alert 2 回答1: Let's assume there was a way to do that. So we have a magical machine that can always find out if .then is called with a function second argument for a specific promise or not. So what? So you can detect if someone

问题 My application has a number of synchronous and asynchronous (doing a $http call) methods. In the controllers I have code like this: $q.all([ asyncMethod1(), syncMethod1() ]) .then(function (results) { Even though I have no need to wait on the syncMethod1() I put this inside the $q.all to keep things simple and to allow me to change the method to async if I wanted in the future. For the sync functions I am calling them like this: var syncMethod1 = function () { var defer = $q.defer(); var abc

问题 Im sending a form to nodejs for authentication. Using $http.get in the following function and adding a promise > .then . In production, does this handle all the errors that I may get from the server? Do I need to add anything else to this function? MyApp.controller("Login", function($scope, $http){ $scope.checkuser = function(user){ $http.get('/login', user).then(function(response){ if(response.data){ console.log(response.data); //based on response.data create if else .. } else { console.log(

问题 Below is my code, I want login() and authenticated() functions to wait for getProfile() function to finish its execution. I tried several ways like promise etc. but I couldn't implement it. Please suggest me the solution. import { Injectable } from '@angular/core'; import { tokenNotExpired } from 'angular2-jwt'; import { myConfig } from './auth.config'; // Avoid name not found warnings declare var Auth0Lock: any; @Injectable() export class Auth { // Configure Auth0 lock = new Auth0Lock