(front) Another way to get toSort boolean at Service

dashboard/src/app/album/album.component.html

@@ -2,7 +2,8 @@
   <h1>{{albumName}}</h1>
 
   <div *ngIf="toSort" class="alert alert-danger">
-    To sort filter applyed. Songs are filter on location.
+    To sort filter applyed. Songs are filter on location. <br/>
+    Album folder: {{album['Location']}}
   </div>
 
   <div class="alert alert-warning">

dashboard/src/app/els-album.service.ts

@@ -6,6 +6,7 @@ import { map, catchError } from 'rxjs/operators';
 
 import { Album } from './model/album';
 import { ElsService } from './els.service';
+import { ActivatedRoute } from '@angular/router';
 
 @Injectable()
 export class ElsAlbumService extends ElsService {
@@ -36,8 +37,10 @@ export class ElsAlbumService extends ElsService {
     'size': 500
   }
 
-  constructor(protected http: HttpClient) {
-    super(http);
+  constructor(
+    protected http: HttpClient,
+    protected route: ActivatedRoute) {
+    super(http, route);
   }
 
   getAlbums(query: any): Observable<Album[]> {

dashboard/src/app/els-sort.service.ts

@@ -1,5 +1,6 @@
 import { HttpClient } from '@angular/common/http';
 import { Injectable } from '@angular/core';
+import { ActivatedRoute } from '@angular/router';
 import { Observable } from 'rxjs';
 import { map, catchError } from 'rxjs/operators';
 import { ElsService } from './els.service';
@@ -12,8 +13,10 @@ import { Song } from './model/song';
 })
 export class ElsSortService extends ElsService {
 
-  constructor(protected http: HttpClient) {
-    super(http);
+  constructor(
+    protected http: HttpClient,
+    protected route: ActivatedRoute) {
+    super(http, route);
   }
 
   getTime(): Promise<number> {

dashboard/src/app/els.service.ts

@@ -9,6 +9,7 @@ import { Album } from './model/album';
 import { Artist } from './model/artist';
 import { Bucket } from './model/bucket';
 import { Suggested } from './model/suggested';
+import { ActivatedRoute } from '@angular/router';
 
 @Injectable()
 export class ElsService {
@@ -25,7 +26,16 @@ export class ElsService {
   protected headers = new HttpHeaders({'Content-Type': 'application/json'});
   protected defaultLocation = "/F:/Musique" // TODO Use conf
 
-  constructor(protected http: HttpClient) { }
+  constructor(
+    protected http: HttpClient,
+    protected route: ActivatedRoute) { }
+
+  fetchToSortParam() {
+    const toSort = this.route.snapshot.queryParams['backend'] || 'defaultUrl';
+    console.log('fetchToSortParam return ' + toSort)
+    return toSort;
+    // ? Retrieve to sort on Service or on each component and add a parameter for each methods?
+  }
 
   getTime(): Promise<number> {
     return this.http