Method render_field

rest_framework/renderers.py:329–374

(self, field, parent_style)

    })

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

        style = self.default_style[field].copy()
        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 ('' if None or False).
        field = field.as_form_field()

        if style.get('input_type') == 'datetime-local':
            try:
                format_ = field._field.format
            except AttributeError:
                format_ = api_settings.DATETIME_FORMAT

            if format_ is not None and field.value not in (None, ''):
                # field.value is expected to be a string
                # https://www.django-rest-framework.org/api-guide/fields/#datetimefield
                field_value = field.value
                if format_ == ISO_8601 and sys.version_info < (3, 11):
                    # We can drop this branch once we drop support for Python < 3.11
                    # https://docs.python.org/3/whatsnew/3.11.html#datetime
                    field_value = field_value.rstrip('Z')
                field.value = (
                    datetime.datetime.fromisoformat(field_value) if format_ == ISO_8601
                    else datetime.datetime.strptime(field_value, format_)
                )

            if isinstance(field.value, datetime.datetime):
                # The format of an input type="datetime-local" is "yyyy-MM-ddThh:mm"
                # followed by optional ":ss" or ":ss.SSS", so keep only the first three
                # digits of milliseconds to avoid browser console error.
                field.value = field.value.replace(tzinfo=None).isoformat(timespec="milliseconds")

        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 render(self, data, accepted_media_type=None, renderer_context=None):
        """