我有一个简单的拦截器,用于检查传出请求是否属于特定端点类型,在本例中为events
和favoriteevents
。
这几乎按预期工作。它出错的一件事是this.dispatcher
在传出请求完成之前发送。
如何更改它以便首先运行传出请求,然后进行调度调用?
import {Injectable, Injector, Optional} from '@angular/core';
import {
HttpRequest,
HttpHandler,
HttpEvent,
HttpInterceptor
} from '@angular/common/http';
import {Observable} from 'rxjs/Observable';
import {AppConstants} from '@constants/app-constants.constant';
import {DispatcherService} from '@services/dispatcher.service';
@Injectable()
export class EventsInterceptor implements HttpInterceptor {
constructor(private dispatcher: DispatcherService) {}
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
const urls = [
{requestType: 'PUT', snippet: '/events/'},
{requestType: 'DELETE', snippet: '/events/'},
{requestType: 'PUT', snippet: '/favoriteevents'},
{requestType: 'DELETE', snippet: '/favoriteevents'}
];
for (const url of urls) {
if (req.method === url.requestType || url.requestType === null) {
if (req.url.indexOf(url.snippet) !== -1) {
this.dispatcher.dispatch({type: AppConstants.actions.refreshFavoriteEvents});
}
}
}
return next.handle(req);
}
}
答案 0 :(得分:3)
您可以尝试类似
的内容rowwise()