finish memos cover

app/Models/Memo.php

@@ -4,6 +4,8 @@ namespace App\Models;
 
 use App\User;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
+use Illuminate\Database\Eloquent\Relations\MorphOne;
 use Illuminate\Database\Eloquent\Relations\MorphToMany;
 
 class Memo extends Model
@@ -24,4 +26,19 @@ class Memo extends Model
 //    {
 //        return $this->morphToMany(Tag::class, 'taggable')->withTimestamps()->withPivot('user_id');
 //    }
+
+    public function images(): MorphMany
+    {
+        return $this->morphMany(Image::class, 'imageable');
+    }
+
+    public function coverImage(): MorphOne
+    {
+        return $this->morphOne(Image::class, 'imageable')
+            ->orderBy('id', 'desc')
+            ->where('location', 'cover')
+            ->withDefault(function ($userImage) {
+                $userImage->path = 'images/default-cover.jpg';
+            });
+    }
 }