wip event mapper

app/Models/CompetitionGroup.php

@@ -14,6 +14,11 @@ class CompetitionGroup extends Model
         'level',
     ];
 
+    public function event()
+    {
+        return $this->belongsTo(Event::class, 'id', 'competition_group_id');
+    }
+
     public function sport()
     {
         return $this->belongsTo(Sport::class);