I am trying to create a serializer to get user input and insert it in a patient record, to do this i have several models connected using foreignkey but when i send the data using postman the data gets saved in the dp but the api responds with a 500 bad request !!!
console
Validated data before pop: {'ticket': 2, 'pressure': '125/75', 'diabetes': 123}
Ticket value after pop: 2
User's convoy: Test 2
Appointment found:
Patient Test
Validated data before creating Detection: {'pressure': '125/75', 'diabetes': 123, 'ticket': <Appointment: Patient Test>}
Detection created: Patient Test
2 125/75 123
Internal Server Error: /early/api/detection/
Traceback (most recent call last):
File "/usr/local/lib/python3.9/site-packages/django/core/handlers/exception.py", line 55, in inner
response = get_response(request)
File "/usr/local/lib/python3.9/site-packages/django/core/handlers/base.py", line 197, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 56, in wrapper_view
return view_func(*args, **kwargs)
File "/usr/local/lib/python3.9/site-packages/django/views/generic/base.py", line 104, in view
return self.dispatch(request, *args, **kwargs)
File "/usr/local/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
response = self.handle_exception(exc)
File "/usr/local/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
self.raise_uncaught_exception(exc)
File "/usr/local/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
raise exc
File "/usr/local/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
response = handler(request, *args, **kwargs)
File "/app/earlyDetection/views.py", line 16, in post
return Response(serializer.data, status=status.HTTP_201_CREATED)
File "/usr/local/lib/python3.9/site-packages/rest_framework/serializers.py", line 555, in data
ret = super().data
File "/usr/local/lib/python3.9/site-packages/rest_framework/serializers.py", line 253, in data
self._data = self.to_representation(self.instance)
File "/usr/local/lib/python3.9/site-packages/rest_framework/serializers.py", line 522, in to_representation
ret[field.field_name] = field.to_representation(attribute)
File "/usr/local/lib/python3.9/site-packages/rest_framework/fields.py", line 915, in to_representation
return int(value)
TypeError: int() argument must be a string, a bytes-like object or a number, not 'Appointment'
[16/Nov/2023 15:18:26] "POST /early/api/detection/ HTTP/1.1" 500 102016
models.py
class Detection(models.Model):
# Unique identifier for each appointment
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False, max_length=36)
# Patients's number
ticket = models.ForeignKey(Appointment, on_delete=models.CASCADE)
# Blood pressure
pressure = models.CharField(max_length=10)
# Diabeties reading
diabetes = models.IntegerField()
# Accumulated diabeties reading
acc_Diabetes = models.IntegerField(null= True, blank= True)
# Extra Fields
field = models.ForeignKey(Field, on_delete=models.CASCADE, null= True, blank= True)
# Date of detection
createdAt = models.DateTimeField(auto_now_add=True)
def __str__(self):
return f'{self.ticket.patient.first_name} {self.ticket.patient.last_name}'
class Appointment(models.Model):
# Unique identifier for each appointment
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False, max_length=36)
# Patient name
patient = models.ForeignKey(Patient, on_delete=models.CASCADE)
# Convoy name
convoy = models.ForeignKey(Convoy, on_delete=models.CASCADE)
# Field to store patient queue number
queue = models.PositiveIntegerField(default=0)
# Date and time when the appointment was created
created = models.DateTimeField(auto_now_add=True)
def __str__(self):
return f'{self.patient.first_name} {self.patient.last_name}'
def save(self, *args, **kwargs):
if not self.queue:
# Get the latest appointment for this convoy to determine the next queue number
latest_appointment = Appointment.objects.filter(convoy=self.convoy).order_by('-queue').first()
new_queue = 1 if latest_appointment is None else latest_appointment.queue + 1
self.queue = new_queue
super().save(*args, **kwargs)
serializer.py
from rest_framework import serializers
from .models import Detection, Appointment
class DetectionSerializer(serializers.ModelSerializer):
ticket = serializers.IntegerField()
class Meta:
model = Detection
fields = ['ticket', 'pressure', 'diabetes', 'acc_Diabetes', 'field']
def create(self, validated_data):
print("Validated data before pop: ", validated_data)
ticket = validated_data.pop('ticket')
print("Ticket value after pop: ", ticket)
user = self.context['request'].user # Get the logged-in user
print("User's convoy: ", user.convoy)
try:
# Filter appointments based on the user's convoy
appointment = Appointment.objects.get(convoy=user.convoy, queue=ticket)
print("Appointment found: ", appointment)
except Appointment.DoesNotExist:
raise serializers.ValidationError("Appointment does not exist")
validated_data['ticket'] = appointment
print("Validated data before creating Detection: ", validated_data)
detection = Detection.objects.create(**validated_data)
print("Detection created: ", detection)
print(detection.ticket.queue, detection.pressure, detection.diabetes)
return detection
views.py
class DetectionCreateView(APIView):
def get_serializer_context(self):
return {'request': self.request}
def post(self, request, *args, **kwargs):
serializer = DetectionSerializer(data=request.data, context=self.get_serializer_context())
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
urls.py
from django.urls import path, include
from . import views
# from .views import UserViewSet
app_name= "early"
urlpatterns = [
path('api/detection/', views.DetectionCreateView.as_view(), name='detection'),
]
Postman request
