Change "id" to "pk" in Serializers and add "pk" QuestionListSerializer

unisportomat/quiz/serializers.py

@@ -12,7 +12,7 @@ class SportListSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Sport
-        fields = ("id", "name", "url", "criteria_ratings")
+        fields = ("pk", "name", "url", "criteria_ratings")
 
 
 class QuestionListSerializer(serializers.ModelSerializer):
@@ -23,7 +23,7 @@ class QuestionListSerializer(serializers.ModelSerializer):
     class Meta:
         model = Question
 
-        fields = ("text", "criterion")
+        fields = ("pk", "text", "criterion")
 
 
 class CriterionListSerializer(serializers.ModelSerializer):
@@ -33,4 +33,4 @@ class CriterionListSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = Criterion
-        fields = ("id", "name")
+        fields = ("pk", "name")