add clear cache to edu programs, fix relationships bugs

app/Observers/AdmissionCampaignObserver.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Observers;
+
+use App\Services\App\Cache\AdmissionCampaignCacheService;
+
+class AdmissionCampaignObserver
+{
+    public function __construct(
+        private readonly AdmissionCampaignCacheService $admissionCampaignCacheService
+    ){}
+
+    public function saved(): void
+    {
+        $this->admissionCampaignCacheService->clearAllCacheByModel();
+    }
+
+    /**
+     * Handle the Post "updated" event.
+     */
+    public function updated()
+    {
+        $this->admissionCampaignCacheService->clearAllCacheByModel();
+    }
+
+    /**
+     * Очистка кеша при удалении поста.
+     */
+    public function deleted()
+    {
+        $this->admissionCampaignCacheService->clearAllCacheByModel();
+    }
+
+    /**
+     * Handle the Post "restored" event.
+     */
+    public function restored(): void
+    {
+        //
+    }
+
+    /**
+     * Handle the Post "force deleted" event.
+     */
+    public function forceDeleted(): void
+    {
+        //
+    }
+}