package.json dependencies
"dependencies": {
"@angular/cli": "1.0.0",
"@angular/compiler-cli": "^4.0.0",
"@angular/common": "^4.0.0",
"@angular/compiler": "^4.0.0",
"@angular/core": "^4.0.0",
"@angular/forms": "^4.0.0",
"@angular/http": "^4.0.0",
"@angular/platform-browser": "^4.0.0",
"@angular/platform-browser-dynamic": "^4.0.0",
"@angular/router": "^4.0.0",
"core-js": "^2.4.1",
"rxjs": "^5.1.0",
"zone.js": "^0.8.4"
}
In component post-show.component.ts I've import 'ActivatedRoute' and use-
import {Component, OnInit, Input } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { Post } from './post';
import { PostService } from './post.service';
@Component({
selector: 'post-show',
templateUrl: 'post-show.component.html',
styleUrls: ['post-list.component.css']
})
export class PostShowComponent implements OnInit {
id: number;
routerId: any;
constructor(private http: Http, private route: ActivatedRoute, private postService: PostService ) {}
@Input() post: Post;
ngOnInit(){
this.routerId = this.route.params.subscribe(
params => {
this.id = +params['id'];
})
let postRequest = this.route.params
.flatMap((params: Params) =>
this.postService.getPost(+params['id']));
postRequest.subscribe(response => this.post = response.json());
}
}
When I try to use 'ActivatedRoute' it through the error-
ERROR Error: Uncaught (in promise): Error: No provider for ActivatedRoute! Error: No provider for ActivatedRoute!
You need add: providers : [ActivatedRoute], in @Component , like that:
@Component({
selector: 'post-show',
templateUrl: 'post-show.component.html',
styleUrls: ['post-list.component.css'],
providers: [ ActivatedRoute ]
})
What worked for me was:
import { RouterTestingModule } from '@angular/router/testing';
Then importing RouterTestingModule
in the .spec
file:
imports: [
RouterTestingModule,
],
请在您的主模块中导入RouterModule。
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