create and fix code

app/Models/RoadItemsProject.php

@@ -3,11 +3,10 @@
 namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
-use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\MorphToMany;
 use Illuminate\Http\UploadedFile;
 use Illuminate\Database\Eloquent\Model;
-use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 
 class RoadItemsProject extends Model
 {
@@ -188,13 +187,8 @@ class RoadItemsProject extends Model
         );
     }
 
-    public function missions(): MorphToMany
+    public function mission(): BelongsTo
     {
-        return $this->morphToMany(Mission::class,
-            'missionable',
-            'missionables',
-            'missionable_id',
-            'mission_id',
-        );
+        return $this->belongsTo(Mission::class);
     }
 }