From 7aa8c50360a720a25ac9be399fe204264665cc17 Mon Sep 17 00:00:00 2001
From: AndrzejMorawski00 <plsp181lo@gmail.com>
Date: Wed, 27 Nov 2024 21:54:23 +0100
Subject: [PATCH] change queryset to prevent duplicates

---
 zapisy/apps/theses/models.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/zapisy/apps/theses/models.py b/zapisy/apps/theses/models.py
index bc421bfa19..a045114667 100644
--- a/zapisy/apps/theses/models.py
+++ b/zapisy/apps/theses/models.py
@@ -45,11 +45,12 @@ class ThesesQuerySet(models.QuerySet):
     def visible(self, user):
         if user.is_staff or is_theses_board_member(user):
             return self
+        student_theses = self.filter(students__user=user)
         return self.filter(
             (~Q(status=ThesisStatus.BEING_EVALUATED) & ~Q(status=ThesisStatus.RETURNED_FOR_CORRECTIONS)) |
             Q(advisor__user=user) |
             Q(supporting_advisor__user=user) |
-            Q(students__user=user)).distinct()
+            Q(id__in=student_theses))
 
 
 class Thesis(models.Model):