Merge pull request #129 from golony6449/feature/golony/session

누락 필드 추가 및 불필요 필드 삭제

Author: golony6449

session/serializers.py

@@ -8,8 +8,7 @@ class SessionSerializer(serializers.ModelSerializer):
     category_name = serializers.SerializerMethodField()
     accepted = serializers.BooleanField(read_only=True)
     day_of_week = serializers.SerializerMethodField()
-    created_at = serializers.DateTimeField(read_only=True)
-    updated_at = serializers.DateTimeField(read_only=True)
+    start_at = serializers.DateTimeField(read_only=True)
 
     class Meta:
         model = Session