diff --git a/file_link/serializers.py b/file_link/serializers.py
index 785c7a0..2f8711f 100644
--- a/file_link/serializers.py
+++ b/file_link/serializers.py
@@ -230,6 +230,7 @@ class CompleteFileLinkSerializer(serializers.ModelSerializer):
 					file_link.tags.add(tag)
 				
 				students = data["students"]
+				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
 
 				for student_data in students:
 					logs = student_data["get_items"]
@@ -274,11 +275,10 @@ class CompleteFileLinkSerializer(serializers.ModelSerializer):
 								Log.objects.create(**log)
 
 					file_link.students.add(student)
+					subject.students.add(student)
 
 				groups = data["groups"]
 
-				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
-
 				for group_data in groups:
 					g_exists = StudentsGroup.objects.filter(subject = subject, slug = group_data["slug"])
 
diff --git a/goals/serializers.py b/goals/serializers.py
index 68e88df..be9f254 100644
--- a/goals/serializers.py
+++ b/goals/serializers.py
@@ -185,6 +185,7 @@ class CompleteGoalSerializer(serializers.ModelSerializer):
 					goals.tags.add(tag)
 
 				students = data["students"]
+				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
 
 				for student_data in students:
 					logs = student_data["get_items"]
@@ -229,11 +230,10 @@ class CompleteGoalSerializer(serializers.ModelSerializer):
 								Log.objects.create(**log)
 
 					goals.students.add(student)
+					subject.students.add(student)
 
 				groups = data["groups"]
 
-				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
-
 				for group_data in groups:
 					g_exists = StudentsGroup.objects.filter(subject = subject, slug = group_data["slug"])
 
diff --git a/links/serializers.py b/links/serializers.py
index 0bdd473..27a102d 100644
--- a/links/serializers.py
+++ b/links/serializers.py
@@ -167,6 +167,7 @@ class CompleteLinkSerializer(serializers.ModelSerializer):
 					link.tags.add(tag)
 				
 				students = data["students"]
+				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
 
 				for student_data in students:
 					logs = student_data["get_items"]
@@ -211,11 +212,10 @@ class CompleteLinkSerializer(serializers.ModelSerializer):
 								Log.objects.create(**log)
 
 					links.students.add(student)
+					subject.students.add(student)
 
 				groups = data["groups"]
 
-				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
-
 				for group_data in groups:
 					g_exists = StudentsGroup.objects.filter(subject = subject, slug = group_data["slug"])
 
diff --git a/pdf_file/serializers.py b/pdf_file/serializers.py
index 7c5f240..5ad7c95 100644
--- a/pdf_file/serializers.py
+++ b/pdf_file/serializers.py
@@ -224,6 +224,7 @@ class CompletePDFFileSerializer(serializers.ModelSerializer):
 					pdf.tags.add(tag)
 				
 				students = data["students"]
+				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
 
 				for student_data in students:
 					logs = student_data["get_items"]
@@ -268,10 +269,10 @@ class CompletePDFFileSerializer(serializers.ModelSerializer):
 								Log.objects.create(**log)
 
 					pdf.students.add(student)
+					subject.students.add(student)
 
 				groups = data["groups"]
 
-				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
 
 				for group_data in groups:
 					g_exists = StudentsGroup.objects.filter(subject = subject, slug = group_data["slug"])
diff --git a/webpage/serializers.py b/webpage/serializers.py
index 2bfe96b..f041f12 100644
--- a/webpage/serializers.py
+++ b/webpage/serializers.py
@@ -167,6 +167,7 @@ class CompleteWebpageSerializer(serializers.ModelSerializer):
 					webpage.tags.add(tag)
 
 				students = data["students"]
+				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
 
 				for student_data in students:
 					logs = student_data["get_items"]
@@ -212,11 +213,10 @@ class CompleteWebpageSerializer(serializers.ModelSerializer):
 								Log.objects.create(**log)
 
 					webpage.students.add(student)
+					subject.students.add(student)
 
 				groups = data["groups"]
 
-				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
-
 				for group_data in groups:
 					g_exists = StudentsGroup.objects.filter(subject = subject, slug = group_data["slug"])
 
diff --git a/youtube_video/serializers.py b/youtube_video/serializers.py
index 84bfdf5..1233d4a 100644
--- a/youtube_video/serializers.py
+++ b/youtube_video/serializers.py
@@ -169,6 +169,7 @@ class CompleteYTVideoSerializer(serializers.ModelSerializer):
 					ytvideo.tags.add(tag)
 
 				students = data["students"]
+				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
 
 				for student_data in students:
 					logs = student_data["get_items"]
@@ -213,11 +214,10 @@ class CompleteYTVideoSerializer(serializers.ModelSerializer):
 								Log.objects.create(**log)
 
 					ytvideo.students.add(student)
+					subject.students.add(student)
 
 				groups = data["groups"]
 
-				subject = get_object_or_404(Subject, slug = self.context.get("subject", None))
-
 				for group_data in groups:
 					g_exists = StudentsGroup.objects.filter(subject = subject, slug = group_data["slug"])
 
--
libgit2 0.21.2