Remove useless code

src/app/components/creator/content-create-page/content-create-page.component.html

@@ -3,22 +3,22 @@
     <mat-tab-group>
       <mat-tab label="Text">
         <div class="tab-container">
-          <app-content-creator [format]="'text'"></app-content-creator>
+          <app-content-creator [format]="'text'" [contentGroups]="contentGroups"></app-content-creator>
         </div>
       </mat-tab>
       <mat-tab label="Single / Multiple Choice">
         <div class="tab-container">
-          <app-content-creator [format]="'choice'"></app-content-creator>
+          <app-content-creator [format]="'choice'" [contentGroups]="contentGroups"></app-content-creator>
         </div>
       </mat-tab>
       <mat-tab label="Likert">
         <div class="tab-container">
-          <app-content-creator [format]="'likert'"></app-content-creator>
+          <app-content-creator [format]="'likert'" [contentGroups]="contentGroups"></app-content-creator>
         </div>
       </mat-tab>
       <mat-tab label="{{ 'content.yes' | translate }} / {{ 'content.no' | translate }}">
         <div class="tab-container">
-          <app-content-creator [format]="'yesno'"></app-content-creator>
+          <app-content-creator [format]="'yesno'" [contentGroups]="contentGroups"></app-content-creator>
         </div>
       </mat-tab>
     </mat-tab-group>

src/app/components/creator/content-create-page/content-create-page.component.ts

 import { Component, OnInit } from '@angular/core';
 import { TranslateService } from '@ngx-translate/core';
 import { LanguageService } from '../../../services/util/language.service';
+import { RoomService } from '../../../services/http/room.service';
+import { ActivatedRoute } from '@angular/router';
+import { ContentGroup } from '../../../models/content-group';
 
 @Component({
   selector: 'app-content-create-page',
@@ -9,12 +12,28 @@ import { LanguageService } from '../../../services/util/language.service';
 })
 export class ContentCreatePageComponent implements OnInit {
 
+  contentGroups: ContentGroup[];
+  lastCollection: string;
+
   constructor(private translateService: TranslateService,
-              protected langService: LanguageService) {
+              protected langService: LanguageService,
+              protected roomService: RoomService,
+              protected route: ActivatedRoute) {
     langService.langEmitter.subscribe(lang => translateService.use(lang));
   }
 
+
+
   ngOnInit() {
     this.translateService.use(sessionStorage.getItem('currentLang'));
+    this.route.params.subscribe(params => {
+      this.getGroups(params['roomId']);
+    });
+    this.lastCollection = sessionStorage.getItem('collection');
   }
+
+  getGroups(id: string): void {
+      this.roomService.getRoomByShortId(id).subscribe(room => {
+      this.contentGroups = room.contentGroups;
+    });
 }

src/app/components/creator/content-creator/content-creator.component.ts

@@ -4,19 +4,15 @@ import { FormControl } from '@angular/forms';
 import { MAT_DIALOG_DATA, MatDialog, MatDialogRef } from '@angular/material';
 import { ContentListComponent } from '../../shared/content-list/content-list.component';
 import { Room } from '../../../models/room';
-import { RoomService } from '../../../services/http/room.service';
-import { ActivatedRoute } from '@angular/router';
-import { ContentGroup } from '../../../models/content-group';
-import { RoomPageComponent } from '../../shared/room-page/room-page.component';
-import { Location } from '@angular/common';
 
 @Component({
   selector: 'app-content-creator',
   templateUrl: './content-creator.component.html',
   styleUrls: ['./content-creator.component.scss']
 })
-export class ContentCreatorComponent extends RoomPageComponent implements OnInit {
+export class ContentCreatorComponent implements OnInit {
   @Input() format;
+  @Input() contentGroups;
   room: Room;
 
   content: ContentText = new ContentText(
@@ -28,7 +24,7 @@ export class ContentCreatorComponent extends RoomPageComponent implements OnInit
     1,
     [],
   );
-  contentGroups: ContentGroup[];
+
   lastCollection: string;
   myControl = new FormControl();
 
@@ -36,25 +32,10 @@ export class ContentCreatorComponent extends RoomPageComponent implements OnInit
 
   constructor(public dialog: MatDialog,
               public dialogRef: MatDialogRef<ContentListComponent>,
-              protected roomService: RoomService,
-              protected route: ActivatedRoute,
-              protected location: Location,
               @Inject(MAT_DIALOG_DATA) public data: any) {
-    super(roomService, route, location);
   }
 
   ngOnInit() {
-    this.route.params.subscribe(params => {
-      this.getRoom(params['roomId']);
-    });
-    this.lastCollection = sessionStorage.getItem('collection');
-  }
-
-  getRoom(id: string): void {
-    this.roomService.getRoomByShortId(id).subscribe(room => {
-      this.contentGroups = room.contentGroups;
-    });
-
   }
 
   resetInputs() {

src/app/components/creator/room-creator-page/room-creator-page.component.ts

@@ -35,7 +35,9 @@ export class RoomCreatorPageComponent extends RoomPageComponent implements OnIni
     this.translateService.use(sessionStorage.getItem('currentLang'));
     this.route.params.subscribe(params => {
       this.getRoom(params['roomId']);
-      console.log(this.room.name);
+      if (this.room) {
+        console.log('room exists');
+      }
     });
   }
 

src/app/services/http/room.service.ts

@@ -65,14 +65,6 @@ export class RoomService extends BaseHttpService {
     );
   }
 
-  getContentGroups(id: string): Observable<ContentGroup[]> {
-    const connectionUrl = `${ this.apiUrl.base +  this.apiUrl.rooms }/${ id }`;
-    return this.http.get<ContentGroup[]>(connectionUrl).pipe(
-      tap(() => ''),
-      catchError(this.handleError<ContentGroup[]>(`getContentGroup keyword=${ id }`))
-    );
-  }
-
   getRoomByShortId(shortId: string): Observable<Room> {
     const connectionUrl = `${ this.apiUrl.base +  this.apiUrl.rooms }/~${ shortId }`;
     return this.http.get<Room>(connectionUrl).pipe(