Redesign

src/app/boards/boards.component.html

@@ -2,11 +2,13 @@
 <img src="http://static.vdk2ch.ru:15555/test-public/16657431265390.png" alt="свiня" width="150">
 <app-send-post></app-send-post>,
   <h2> {{boardName}} </h2>
-<button (click)="refreshPosts('postgres')">Общий раздел</button>
+  <h3> {{displayed_thread_number}}</h3>
+<button (click)="refreshPosts(boardName , displayed_thread_number)">Обновить</button>
+  <input type="number" [(ngModel)]=displayed_thread_number>
 <post-single
   *ngFor="let post of postsToShow" [post]="post"
 ></post-single>
-<button (click)="refreshPosts('postgres')">Обновить</button>
+<button (click)="refreshPosts(boardName , displayed_thread_number)">Обновить</button>
 <br>
 <div class="hexagon">
   <div class="hexagon-inside">