I can't add foreignkey values - django

Question

I need to add data to the database For that, I'm trying some code. But I can't add foreignkey values. The code throws exceptions. Here are my views.py, models.py code and exceptions.
first try:
views.py
def notification(request):
user = request.user
if request.method == 'POST':
property_id = request.POST['property_id']
owner = request.POST['owner_id']
property_object = Property.objects.get(id=property_id)
owner_object = Property.objects.get(owner=owner)
notification = user, "have intrested in your property"
property_object.notify.add(user)
notifications = Notifications.objects.create(notification=notification, owner=owner_object
,property=property_object)
notifications.save()
it throws exception
ValueError: Field 'id' expected a number but got 'hafis'.
second try
views.py
def notification(request):
user = request.user
if request.method == 'POST':
property_id = request.POST['property_id']
owner = request.POST['owner_id']
property_object = Property.objects.get(id=property_id)
notification = user, "have intrested in your property"
property_object.notify.add(user)
notifications = Notifications.objects.create(notification=notification, owner=owner,
property=property_id)
notifications.save()
it throws exception
ValueError: Cannot assign "'hafis'": "Notifications.owner" must be a "User" instance.
models.py
class Property(models.Model):
owner = models.ForeignKey(User, null=True, blank=True, on_delete=models.CASCADE)
headline = models.CharField(max_length=255)
city = models.CharField(max_length=100)
location = models.CharField(max_length=100)
facilites = models.TextField()
rent = models.CharField(max_length=200)
images = models.FileField(upload_to='media/uploads',null=True)
email = models.EmailField()
mobile = models.IntegerField(null=True)
date = models.DateTimeField(auto_now_add=True)
notify = models.ManyToManyField(User, default=None, blank=True, related_name='Liked')
def __str__(self):
return self.headline
class Notifications(models.Model):
owner = models.ForeignKey(User, null=True, blank=True,on_delete=models.CASCADE)
property = models.ForeignKey(Property, null=True, blank=True,on_delete=models.CASCADE)
notification = models.TextField()
date = models.DateTimeField(auto_now_add=True)
def __str_(self):
return self.notification
HTML code
{% if accomodations %}
{% for accomodation in accomodations %}
<form action="{% url 'notification' %}" method="post">
{% csrf_token %}
<input type="hidden" name="owner_id" value="{{ accomodation.owner }}">
<button id="request-btn" name="property_id" value="{{ accomodation.id }}" class="btn btn-primary">Contact info:</button>
</form>

Answer 1

You need to pass the users instance. You can get user by this line of code
owner = User.objects.all().get(username=owner)
Note:
Every user should have differnt usernames

Answer 2

ValueError: Cannot assign "'hafis'": "Notifications.owner" must be a "User" instance. you're just passing in the ID but it requires it to be a User object.
def notification(request):
user = request.user
if request.method == 'POST':
property_id = request.POST['property_id']
owner = User.objects.get(id=request.POST['owner_id'])
property_object = Property.objects.get(id=property_id)
notification = user, "have intrested in your property"
property_object.notify.add(user)
notifications = Notifications.objects.create(notification=notification, owner=owner,
property=property_id)
notifications.save()