Parse request for :func:`play`

def parse_request(self):
        """ Parse request for :func:`play`
        """
        data = {}
        options = {}
        ### get data
        if request.headers['Content-Type'].startswith('application/json'):
            # data in JSON
            data = request.json
            assert data is not None #FIXME: better error than assertError ?
            if "options" in data:
                options = data["options"]
                del data["options"]
        else:
            # data in URL/post
            data = dict()
            data.update(request.form)
            data.update(request.args)
            for key, value in six.iteritems(data):
                if isinstance(value, list) and len(value) == 1:
                    data[key] = value[0]
            # manage config in url
            options = self._config_from_url()
        return data, options