widgets.py 文件源码

def render(self, name, value, attrs=None):
        try:
            year_val, month_val, day_val = value.year, value.month, value.day
        except AttributeError:
            year_val = month_val = day_val = None
            if isinstance(value, six.string_types):
                if settings.USE_L10N:
                    try:
                        input_format = get_format('DATE_INPUT_FORMATS')[0]
                        v = datetime.datetime.strptime(force_str(value), input_format)
                        year_val, month_val, day_val = v.year, v.month, v.day
                    except ValueError:
                        pass
                if year_val is None:
                    match = self.date_re.match(value)
                    if match:
                        year_val, month_val, day_val = [int(val) for val in match.groups()]
        html = {}
        choices = [(i, i) for i in self.years]
        html['year'] = self.create_select(name, self.year_field, value, year_val, choices, self.year_none_value)
        choices = list(self.months.items())
        html['month'] = self.create_select(name, self.month_field, value, month_val, choices, self.month_none_value)
        choices = [(i, i) for i in range(1, 32)]
        html['day'] = self.create_select(name, self.day_field, value, day_val, choices, self.day_none_value)

        output = []
        for field in self._parse_date_fmt():
            output.append(html[field])
        return mark_safe('\n'.join(output))