KeyError at /api/rooms/create-grade/ 'grade' - django

Question

I don't understand this error one bit, I'm trying to do a basic create method but I get a KeyError what am i doing wrong
This is serializer.py code
class GradeCreateSerializer(serializers.ModelSerializer):
grade = serializers.ChoiceField(choices=GRADES, source="get_grade_display")
class Meta:
model = Grade
fields = ["grade"]
# ordering = ['-created_date']
def create(self, validated_data):
user = None
request = self.context.get("request")
if request and hasattr(request, "user"):
user = request.user
try:
perms = Perm.objects.get(user=user)
except:
perms = None
if user.role in ['OWNER', 'PARTNER']:
school = user.owns.first()
elif perms is not None:
if user.role == 'STAFF' and perms.can_crt_grade_class:
school = user.works
instance = Grade.objects.create(
grade=validated_data['grade'],
school=school,
)
instance.save()
return instance
what am I doing wrong??
I have added the error traceback as requested
error traceback
Traceback (most recent call last):
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\django\core\handlers\exception.py", line 55, in inner
response = get_response(request)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\django\core\handlers\base.py", line 197, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\django\views\decorators\csrf.py", line 54, in wrapped_view
return view_func(*args, **kwargs)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\django\views\generic\base.py", line 103, in view
return self.dispatch(request, *args, **kwargs)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\views.py", line 509, in dispatch
response = self.handle_exception(exc)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\views.py", line 469, in handle_exception
self.raise_uncaught_exception(exc)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\views.py", line 480, in raise_uncaught_exception
raise exc
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\views.py", line 506, in dispatch
response = handler(request, *args, **kwargs)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\generics.py", line 190, in post
return self.create(request, *args, **kwargs)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\mixins.py", line 19, in create
self.perform_create(serializer)
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\mixins.py", line 24, in perform_create
serializer.save()
File "F:\Projects\SchoolProject\main\Abugida\lib\site-packages\rest_framework\serializers.py", line 212, in save
self.instance = self.create(validated_data)
File "F:\Projects\SchoolProject\main\Classes\serializers.py", line 45, in create
grade=validated_data['grade'],
KeyError: 'grade'
it says that grade=validated_data['grade'], this the problem but i don't get it.

Answer 1

I have found a solution to my issue, it was because of grade = serializers.ChoiceField(choices=GRADES, source="get_grade_display") this means when using a ChoiceField to define your field you don't need to pass the source="" as the field uses the choice to determine it
So changing
grade = serializers.ChoiceField(choices=GRADES, source="get_grade_display")
to
grade = serializers.ChoiceField(choices=GRADES)
did the trick