upload empty array in multipart

parsers.py

from rest_framework.parsers import MultiPartParser


class CustomMultiPartParser(MultiPartParser):

    def parse(self, stream, media_type=None, parser_context=None):

        data_and_files = super(CustomMultiPartParser, self).parse(stream, media_type=media_type, parser_context=parser_context)

        for key, val in data_and_files.data.iteritems():
            data = data_and_files.data.getlist(key)
            ln = len(data)
            if ln == 1 and data[0] == '[]':
                data_and_files.data.setlist(key, [])

        return data_and_files