def render_field(self, field, parent_style):
        if isinstance(field._field, serializers.HiddenField):
            return ''

        style = dict(self.default_style[field])
        style.update(field.style)
        if 'template_pack' not in style:
            style['template_pack'] = parent_style.get('template_pack', self.template_pack)
        style['renderer'] = self

        # Get a clone of the field with text-only value representation.
        field = field.as_form_field()

        if style.get('input_type') == 'datetime-local' and isinstance(field.value, six.text_type):
            field.value = field.value.rstrip('Z')

        if 'template' in style:
            template_name = style['template']
        else:
            template_name = style['template_pack'].strip('/') + '/' + style['base_template']

        template = loader.get_template(template_name)
        context = {'field': field, 'style': style}
        return template.render(context) 

def get_serializer_fields(self, path, method, view, version=None, method_func=None):
        """
        Return a list of `coreapi.Field` instances corresponding to any
        request body input, as determined by the serializer class.
        """
        if method in ('PUT', 'PATCH', 'POST'):
            location = 'form'
        else:
            location = 'query'

        serializer_class = self.get_serializer_class(view, method_func)
        if not serializer_class:
            return []

        serializer = serializer_class()
        if isinstance(serializer, serializers.ListSerializer):
            return [
                Field(
                    name='data',
                    location=location,
                    required=True,
                    schema=coreschema.Array()
                )
            ]

        if not isinstance(serializer, serializers.Serializer):
            return []

        fields = []
        for field in serializer.fields.values():
            if field.read_only or isinstance(field, serializers.HiddenField):
                continue

            required = field.required and method != 'PATCH'
            # if the attribute ('help_text') of this field is a lazy translation object, force it to generate a string
            description = str(field.help_text) if isinstance(field.help_text, Promise) else field.help_text
            fallback_schema = self.fallback_schema_from_field(field)
            field = Field(
                name=field.field_name,
                location=location,
                required=required,
                schema=fallback_schema if fallback_schema else field_to_schema(field),
                description=description,
            )
            fields.append(field)

        return fields 

def get_serializer_fields(self, path, method):
        """
        Return a list of `coreapi.Field` instances corresponding to any
        request body input, as determined by the serializer class.
        """
        view = self.view

        if method not in ('PUT', 'PATCH', 'POST'):
            return []

        if not hasattr(view, 'get_serializer'):
            return []

        try:
            serializer = view.get_serializer()
        except exceptions.APIException:
            serializer = None
            warnings.warn('{}.get_serializer() raised an exception during '
                          'schema generation. Serializer fields will not be '
                          'generated for {} {}.'
                          .format(view.__class__.__name__, method, path))

        if isinstance(serializer, serializers.ListSerializer):
            return [
                coreapi.Field(
                    name='data',
                    location='body',
                    required=True,
                    schema=coreschema.Array()
                )
            ]

        if not isinstance(serializer, serializers.Serializer):
            return []

        fields = []
        for field in serializer.fields.values():
            if field.read_only or isinstance(field, serializers.HiddenField):
                continue

            required = field.required and method != 'PATCH'
            field = coreapi.Field(
                name=field.field_name,
                location='form',
                required=required,
                schema=field_to_schema(field)
            )
            fields.append(field)

        return fields