我正在构建一个应用程序,其中第一个url段代表界面的语言,例如:
/en/customer/3
/en/shop
我的路由器设置如下:
{ path: ':lang/customers/:id', component: CustomerComponent },
{ path: ':lang/shop', component: ShopComponent },
我想在引导的AppComponent或翻译服务中使用url(lang =' en'在本例中)中的语言参数。我可以在ShopComponent和CustomerComponent中访问此参数,但代码中没有其他地方。当我在AppComponent中输入它时:
constructor(private activatedRoute: ActivatedRoute, private router : Router) {
}
ngOnInit() {
this.router.routerState.root.params.subscribe((params: Params) => {
console.log('params: ',params);
}
this.activatedRoute.params.subscribe((params: Params) => {
console.log('params: ',params);
}
}
我得到两个空对象。网址参数仍然是空的。
我做错了什么?也许更重要的是,我显然缺少对路由器的一些概念性理解,但我在文档或其他地方找不到任何有用的信息。
感谢您的帮助!
答案 0 :(得分:8)
试着回答我自己的问题,我认为没有简单的方法按照我的想法去做。路由器设置如
{ path: ':lang/customers/:id', component: CustomerComponent }
将整个路径附加到CustomerComponent,使lang和id成为可用参数。从这个角度来看,很清楚为什么在CustomerComponent之外无法访问这些参数。
我最终做的是重新定义我的路由器:
import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';
import { LanguageComponent, CustomerComponent, ShopComponent } from "./";
@NgModule({
imports: [
RouterModule.forRoot([
{ path: ':lang', component: LanguageComponent ,
children: [
{ path: 'shop', component: ShopComponent },
{ path: 'customer/:id', component: CustomerComponent },
{ path: '**', redirectTo: '/shop', pathMatch: 'full' }
]
},
{ path: '**', redirectTo: '/en', pathMatch: 'full' }
])
],
exports: [
RouterModule
]
})
export class AppRoutingModule {}
然后我创建了一个LanguageComponent作为路由组件。
import { Component, OnInit } from '@angular/core';
import { ActivatedRoute, Params } from '@angular/router';
import { TranslateService } from './'
@Component({
template : '<router-outlet></router-outlet>'
})
export class LanguageComponent implements OnInit {
constructor( private activatedRoute : ActivatedRoute, private translateService: TranslateService) {
}
ngOnInit() {
this.activatedRoute.params.subscribe( (params : Params) => {
this.translateService.setLanguage( params['lang'] );
});
}
}
然后我将语言存储在全球可用的TranslateService中。
答案 1 :(得分:1)
查看有关获取路线参数的this帖子
从路线获取参数
this.subscription = this.activatedRoute.params.subscribe(
(param: any) => {
let language = param['lang'];
this.chosenLang = language; // Access to the lang
});
在您想要获取路线参数的组件中
<强> app.component.ts 强>
import { Component, OnInit } from '@angular/core';
import {Router, ActivatedRoute} from '@angular/router';
import {OnInit, OnDestroy} from '@angular/core';
import {Subscription } from 'rxjs';
@Component({
selector: 'my-app',
template: `<blah></blah>`,
styles: []
})
export class AppComponent implements OnInit, OnDestroy {
private subscription: Subscription;
chosenLang: string = "";
constructor(private activatedRoute: ActivatedRoute) { }
ngOnInit() {
// subscribe to router event
this.subscription = this.activatedRoute.params.subscribe(
(param: any) => {
let language = param['lang'];
this.chosenLang = language; // Access to the lang
});
}
ngOnDestroy() {
// prevent memory leak by unsubscribing
this.subscription.unsubscribe();
}
}
答案 2 :(得分:0)
这可能会做你想要的事情
constructor(router:Router) {
router.events.filter(e => e instanceof NavigationEnd).subscribe(e => {
console.log('lang', router.routerState.root.params['lang']);
});
}
它应该在服务和组件中起作用。