FEATURE: add relationship methods to categories and content

app/Models/Content.php

@@ -8,6 +8,7 @@ use Illuminate\Database\Eloquent\Model;
 use Illuminate\Support\Facades\App;
 use Illuminate\Support\Facades\DB;
 use Mcamara\LaravelLocalization\Facades\LaravelLocalization;
+use Modules\Categories\Entities\Category;
 
 /**
  * Class Content
@@ -407,6 +408,11 @@ class Content extends Model
         return $this->belongsToMany(File::class, 'contents_has_files');
     }
 
+    public function category()
+    {
+        return $this->belongsTo(Category::class);
+    }
+
     /**
      * Save history entry into database
      *