Angular 服务事件不会正确影响模板
在google中进行身份验证,使用Angular2 首先,在HTML中,我加载google api库:Angular 服务事件不会正确影响模板,angular,angular2-template,angular2-services,Angular,Angular2 Template,Angular2 Services,在google中进行身份验证,使用Angular2 首先,在HTML中,我加载google api库: //index.html //... <script> var googleApiClientReady = function() { ng2Gauth.googleApiClientReady(gapi); } </script> <script src="https://apis.goog
//index.html
//...
<script>
var googleApiClientReady = function() {
ng2Gauth.googleApiClientReady(gapi);
}
</script>
<script src="https://apis.google.com/js/client.js?onload=googleApiClientReady"></script>
//...
//index.html
//...
var googleapiclientraday=函数(){
ng2Gauth.googleapiclientrady(gapi);
}
//...
在使用Angular2服务后,我处理google auth数据并发出事件,以通知组件google api是否准备就绪:
//google auth service .ts
import {Injectable, EventEmitter} from 'angular2/core';
@Injectable()
export class GoogleAuthService {
isGoogleApiReady: EventEmitter<boolean>;
constructor() {
window['ng2Gauth'] = this; //is it correct way?
this.isGoogleApiReady = new EventEmitter;
}
//it fires from outside of Angular scope
public googleApiClientReady(gapi){
this.gapi.auth.init( () => {
this.isGapiReady.emit(true);
})
};
//...
//google auth service.ts
从'angular2/core'导入{Injectable,EventEmitter};
@可注射()
出口类服务{
isGoogleApiReady:EventEmitter;
构造函数(){
window['ng2Gauth']=this;//这是正确的方式吗?
this.isGoogleAppReady=新事件发射器;
}
//它从角度范围外发射
公共公共图书馆(gapi){
this.gapi.auth.init(()=>{
this.isGapiReady.emit(true);
})
};
//...
在这里,在组件中,我选中复选框,或禁用按钮,并执行其他模板操作
//gauth component
import {Component} from 'angular2/core';
import {GauthService} from './gauth.service';
@Component({
selector: 'gauth',
template: `<input type="checkbox" [(ngModel)]="isReady"> Api ready
export class GauthComponent {
constructor (private _gauthService:GauthService) {
_gauthService.isGoogleApiReady.subscribe( (flag) => this.gapiOnReady(flag) )
public isReady = false
gapiOnReady(flag: boolean) { //it fires,
this.isReady = true; //but not affect on template correctly
console.log('gapi loaded')
this._gauthService.checkAuth();
}
}
//高斯分量
从'angular2/core'导入{Component};
从“./gauth.service”导入{GauthService};
@组成部分({
选择器:“gauth”,
模板:`Api就绪
导出类GauthComponent{
建造商(私人_gauthService:gauthService){
_gauthService.isGoogleApiReady.subscribe((标志)=>this.gapiOnReady(标志))
public isReady=false
gapiOnReady(标志:boolean){//it激发,
this.isReady=true;//但不正确影响模板
console.log('gapi-loaded')
这个._gauthService.checkAuth();
}
}
看起来一切都应该正常,但浏览器(Chrome,FF)中有一个奇怪的错误-如果页面加载到活动浏览器的选项卡上-看起来什么都没有发生-复选框没有选中,如果我在浏览器加载页面时及时打开其他选项卡,一切都正常
如何修复它?是Angular bug还是我做得不对?将
NgZone
注入组件中,并使用zone.run()
初始化库代码,这样库代码使用经过修补的区域异步API,Angular知道何时需要运行更改检测
var googleApiClientReady;
constructor(private zone: NgZone) {
}
public googleApiClientReady(gapi){
zone.run(function () {
this.gapi.auth.init( () => {
this.isGapiReady.emit(true);
})
});
}
及
同样,它没有帮助,谢谢,因为gapi.auth.init它可以工作,但是有gapi.auth.authorize。它在回调中返回auth结果,在回调中我需要发出事件。这里我仍然有同样的问题。我需要查看代码。我自己不使用这个库。
gapiOnReady(flag: boolean) {
zone.run(function() {
this.isReady = true; //but not affect on template correctly
console.log('gapi loaded')
this._gauthService.checkAuth();
});
}