ValueError at /borrow/

I am tryin to automatically populate a table B whenever a user fills out a form that populate tableA. Whenever i fill out the form to populate table A, i run into this error.

Traceback (most recent call last): File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/core/handlers/exception.py", line 55, in inner response = get_response(request) File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/core/handlers/base.py", line 197, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "/home/dubsy/virtualenvs/djangoproject/libmain/books/views.py", line 21, in borrow borrower.save() File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/db/models/base.py", line 812, in save self.save_base( File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/db/models/base.py", line 878, in save_base post_save.send( File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/dispatch/dispatcher.py", line 176, in send return [ File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/dispatch/dispatcher.py", line 177, in <listcomp> (receiver, receiver(signal=self, sender=sender, **named)) File "/home/dubsy/virtualenvs/djangoproject/libmain/books/models.py", line 84, in create_lending ApprovedLending.objects.create(member=row["member_id"]) File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/db/models/manager.py", line 85, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/db/models/query.py", line 669, in create obj = self.model(**kwargs) File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/db/models/base.py", line 541, in __init__ _setattr(self, field.name, rel_obj) File "/home/dubsy/virtualenvs/djangoproject/lib/python3.9/site-packages/django/db/models/fields/related_descriptors.py", line 235, in __set__ raise ValueError( Exception Type: ValueError at /borrow/ Exception Value: Cannot assign "1": "ApprovedLending.member" must be a "User" instance. 

Here is my models.py

class A(models.Model): member = models.ForeignKey(User, on_delete=models.CASCADE, default="") book = models.ForeignKey(Books, on_delete=models.CASCADE, default="") library_no = models.CharField(default="", max_length=255, blank=True) staff_id = models.CharField(default="", max_length=255, blank=True) application_date = models.DateTimeField(auto_now_add=True) class B(models.Model): member = models.ForeignKey(User, on_delete=models.CASCADE, default="", null=True) book = models.ForeignKey(Books, on_delete=models.CASCADE, default="", null=True) approved = models.BooleanField() approval_date = models.DateTimeField(auto_now_add=True, null=True) 

here is the function i used to automatically populate table B when the form for table A has been filled out.

@receiver(post_save, sender=BorrowBook) def create_lending(sender, instance,**kwargs): data = BorrowBook.objects.values() for row in data: ApprovedLending.objects.create(member=row["member_id"]) 

How do i solve this issues.