Django REST Framework file upload causing an "Unsupported media type 'multipart/form-data'" error
<p>I am newbie in Django and Django REST Framework. I have the following serializer class which I am using to upload a file along other information. But, while I run the API endpoint with uploaded file, the result is something like this:</p>

<pre><code>HTTP 415 Unsupported Media Type
Allow: POST, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "detail": "Unsupported media type \"multipart/form-data; boundary=----WebKitFormBoundaryybZ07gjZAqvcsZw3\" in request."
}
</code></pre>

<p>I tried hard by googling to solve this issue, but cannot come out in a solution, so here is my serializer and API views.</p>

<p>Serializer:</p>

<pre><code>class ExampleSerializer(serializers.Serializer):

    example_id = serializers.IntegerField()
    description = serializers.CharField(allow_blank=True)
    example_file = serializers.FileField(allow_empty_file=True)

    def create_requirement_line(self):
        request = self.context['request']

        requirement_line = ExampleService().example_method(
            example_id=self.validated_data['example_id'],
            description=self.validated_data['description'],
            example_file=self.validated_data['example_file']
    )
    return requirement_line
</code></pre>

<p>View:</p>

<pre><code> class RequirementLineAPIView(BaseCreateAPIView):

    serializer_class = ExampleSerializer
    parser_classes = (FormParser,)

    def post(self, request, format=None,*args, **kwargs):
        serializer = self.get_serializer(data=request.data)

        if serializer.is_valid():
            try:
                example_variable = serializer.example_method()
                return Response(example_variable, status=status.HTTP_200_OK)

            except ValidationError as e:
                return Response(e.message, status=status.HTTP_400_BAD_REQUEST)

        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)    
</code></pre>