Passing arguments as json object - json

Question

I am trying to link my django web app to Azure ML API. I do have Django form with all the required inputs for my Azure API.
def post(self,request):
form = CommentForm(request.POST)
url = 'https://ussouthcentral.services.azureml.net/workspaces/7061a4b24ea64942a19f74ed36e4b438/services/ae2c257d6e164dca8d433ad1a1f9feb4/execute?api-version=2.0&format=swagger'
api_key = # Replace this with the API key for the web service
headers = {'Content-Type':'application/json', 'Authorization':('Bearer '+ api_key)}
if form.is_valid():
age = form.cleaned_data['age']
bmi = form.cleaned_data['bmi']
args = {"age":age,"bmi":bmi}
json_data = str.encode(json.dumps(args))
print(type(json_data))
r= urllib.request.Request(url,json_data,headers)
try:
response = urllib.request.urlopen(r)
result = response.read()
print(result)
except urllib.request.HTTPError as error:
print("The request failed with status code: " + str(error.code))
print(json_data)
# Print the headers - they include the requert ID and the timestamp, which are useful for debugging the failure
print(error.info())
print(json.loads(error.read()))
return render(request,self.template_name)
When i try to submit the form i am getting type error -
TypeError('POST data should be bytes, an iterable of bytes, or a file object. It cannot be of type str.',)
Getting status code - 400 and below error
{'error': {'code': 'BadArgument', 'message': 'Invalid argument provided.', 'details': [{'code': 'RequestBodyInvalid', 'message': 'No request body provided or error in deserializing the request body.'}]}}
Arguments are using print(json_data) -
b'{"age": 0, "bmi": 22.0}'
Can someone help me on this?

Answer 1

Try to use JsonResponse:
https://docs.djangoproject.com/en/2.1/ref/request-response/#jsonresponse-objects
Also, I don't think you need a template for API response.
return JsonResponse({'foo': 'bar'})

Answer 2

Thanks all. I found the error it was the data which was not in proper order.