Django Rest Framework + Postman + JSON parse error

Question

I created a Django Api. I used rest_framework.generics.CreateAPIView to post. It works well in default browser. But When i use Postman it throws a error.

views.py

class AuthorCreateAPIView(CreateAPIView):
  queryset = Author.objects.all()
  serializer_class = AuthorCreateUpdateSerializer

serializers.py

class AuthorCreateUpdateSerializer(ModelSerializer):
  class Meta:
  model = Author
  fields = [
    'name',
    'biography',
  ]

Error : "detail": "JSON parse error - Expecting value: line 1 column 1 (char 0)"

In your postman choose `raw` instead of `form-data` and then choose `Json(application/json)` as your input type and check if it works — Navid777, May 06 '18 at 10:30
Thanks, it works. But is it possible to post data by form-data? — Sadman Sobhan, May 06 '18 at 10:37

score 7 · Accepted Answer · answered May 06 '18 at 10:43

7

The problem is that you used form-data as your input, you should use application/json instead.

however you can fix your project's settings file to accept form-data too. You need to add FormParser to your DEFAULT_PARSER_CLASSES in your project's settings.py. It should look like this:

REST_FRAMEWORK = {
    'DEFAULT_PARSER_CLASSES': (
        'rest_framework.parsers.JSONParser',
        'rest_framework.parsers.FormParser',
    )
}

answered May 06 '18 at 10:43

Navid777

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I tried it before. it creates problem to generate JWT token. It throws `"detail": "Unsupported media type \"multipart/form-data; boundary=----WebKitFormBoundary73BA8CafGxDW9ARJ\" in request."` – Sadman Sobhan May 06 '18 at 10:56
are you sending files in that request? – Navid777 May 06 '18 at 10:58
No, i sent username and password by `form-data` – Sadman Sobhan May 06 '18 at 11:01
Could you send a screenshot of that request and its error? – Navid777 May 06 '18 at 11:02
What library are you using to create JWT tokens? It seems that it only accepts Json inputs. – Navid777 May 06 '18 at 11:19
`from rest_framework_jwt.views import obtain_jwt_token` – Sadman Sobhan May 06 '18 at 11:27
The image shows that you have something in your `headers` in postman. What is it? Is it content-type? – Navid777 May 06 '18 at 11:37
No it's authorization – Sadman Sobhan May 06 '18 at 11:42

Django Rest Framework + Postman + JSON parse error

1 Answers1