Initial commit for the Angular part. We are nowhere yet.

bookie/src/app/guest-book/guest-book-detail-resolver.service.ts

@@ -0,0 +1,19 @@
+import {Injectable} from '@angular/core';
+import {ActivatedRouteSnapshot, Resolve, Router, RouterStateSnapshot} from '@angular/router';
+import {GuestBookService} from './guest-book.service';
+import {GuestBook} from './guest-book';
+import {Observable} from 'rxjs/internal/Observable';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class GuestBookDetailResolver implements Resolve<GuestBook> {
+
+  constructor(private ser: GuestBookService, private router: Router) {
+  }
+
+  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<GuestBook> {
+    const id = route.paramMap.get('id');
+    return this.ser.get(id);
+  }
+}