Committing the modifications of saving student video with proper serilization validation.

FirstApp/api.py

@@ -165,13 +165,17 @@ class LectureVideoViewSet(APIView):
         #
         # }, status=status.HTTP_201_CREATED)
 
+        # serializer = LectureVideoSerializer(data=request.data, many=True)
         serializer = LectureVideoSerializer(data=request.data)
+        # serializer.create(validated_data=request.data)
+
+
+        if serializer.is_valid(raise_exception=ValueError):
+            print('valid')
             serializer.create(validated_data=request.data)
 
         return Response(serializer.data, status=status.HTTP_201_CREATED)
 
-        # if serializer.is_valid(raise_exception=ValueError):
-        #     serializer.create(validated_data=request.data)
 
         # return Response(serializer.error_messages,
         #                 status=status.HTTP_400_BAD_REQUEST)

FirstApp/logic/head_gaze_estimation.py

@@ -1007,6 +1007,7 @@ def get_gaze_correlations(individual_lec_gaze, lec_recorded_activity_data):
     # this variable will be used to store the correlations
     correlations = []
 
+
     # limit = 10
     limit = len(individual_lec_gaze)
 

FirstApp/serializers.py

@@ -194,6 +194,47 @@ class LectureVideoSerializer(serializers.ModelSerializer):
         model = LectureVideo
         fields = '__all__'
 
+    # this method will validate the input data
+    def to_internal_value(self, data):
+
+        lecturer = None
+        subject = None
+
+        lecturer_data = data.get('lecturer')
+        subject_data = data.get('subject')
+
+        # serialize the lecturer data
+        lecturer = Lecturer.objects.filter(id=lecturer_data)
+        subject = Subject.objects.filter(id=subject_data)
+
+        lecturer_ser_data = LecturerSerializer(lecturer, many=True).data[0]
+        subject_ser_data = SubjectSerializer(subject, many=True).data[0]
+
+        # retrieve the last lecture video details
+        last_lec_video = LectureVideo.objects.order_by('lecture_video_id').last()
+        # create the next lecture video id
+        new_lecture_video_id = ig.generate_new_id(last_lec_video.lecture_video_id)
+
+        # if both subject and lecturer details are available
+        if len(lecturer) == 1 & len(subject) == 1:
+            str_video_length = data.get('video_length')
+            video_length_parts = str_video_length.split(':')
+            video_length = datetime.timedelta(minutes=int(video_length_parts[0]), seconds=int(video_length_parts[1]),
+                                              milliseconds=int(video_length_parts[2]))
+
+        # this data will be passed as validated data
+        validated_data = {
+            'lecture_video_id': new_lecture_video_id,
+            'lecturer': lecturer_ser_data,
+            'subject': subject_ser_data,
+            'date': data.get('date'),
+            'video_name': data.get('video_name'),
+            'video_length': video_length
+        }
+
+        return super(LectureVideoSerializer, self).to_internal_value(validated_data)
+
+
 
 
     # this method will override the 'create' method
@@ -202,6 +243,8 @@ class LectureVideoSerializer(serializers.ModelSerializer):
         lecturer = None
         subject = None
 
+
+
         lecturer_data = validated_data.pop('lecturer')
         subject_data = validated_data.pop('subject')