feat: add sub category

app/Models/MusicPlaylist.php

@@ -10,7 +10,7 @@ class MusicPlaylist extends Model
     protected $table = 'music_playlists';
     
     protected $fillable = [
-        'category_id', 'name', 'slug', 'description', 'image_id', 'order', 'is_active'
+        'category_id', 'subcategory_id','name', 'slug', 'description', 'image_id', 'order', 'is_active'
     ];
     
     protected $casts = [
@@ -23,6 +23,12 @@ public function category(): BelongsTo
         return $this->belongsTo(MusicCategory::class, 'category_id');
     }
     
+     public function subcategory(): BelongsTo
+    {
+        return $this->belongsTo(MusicSubcategory::class, 'subcategory_id');
+    }
+    
+    
     public function musics(): HasMany
     {
         return $this->hasMany(Music::class, 'playlist_id');