fix quiz is_complated

apps/quiz/serializers/quiz.py

@@ -10,11 +10,12 @@ from apps.course.models import Lesson, Participant
 
 
 class QuizListSerializer(serializers.ModelSerializer):
+    is_complated = serializers.SerializerMethodField()
     permission = serializers.SerializerMethodField()
 
     class Meta:
         model = Quiz
-        fields = ['id', 'title', 'description', 'permission', 'each_question_timing',]
+        fields = ['id', 'title', 'description', 'permission', 'each_question_timing', 'is_complated']
 
     def get_permission(self, obj):
         request = self.context.get('request')
@@ -35,6 +36,14 @@ class QuizListSerializer(serializers.ModelSerializer):
         """Helper method to check if a student is a participant in the given course."""
         return Participant.objects.filter(student=student, course=course).exists()
 
+    def get_is_complated(self, obj):
+        request = self.context.get('request')
+        if not request or not request.user.is_authenticated:
+            return False 
+        user = request.user
+        return QuizParticipant.objects.filter(user=user, quiz=obj).exists()
+        
+
 
 
 
@@ -71,5 +80,3 @@ class QuizSerializer(serializers.ModelSerializer):
         user = request.user
         participated = QuizParticipant.objects.filter(user=user, quiz=obj).exists()
         return not participated
-
-