forms.py 文件源码

def __init__(self, *args, **kwargs):
        super(PageForm, self).__init__(*args, **kwargs)
        self.fields['parent'].widget = HiddenInput()
        self.fields['site'].widget = HiddenInput()
        self.fields['template'].widget = HiddenInput()
        self.fields['language'].widget = HiddenInput()
        if not self.fields['site'].initial:
            self.fields['site'].initial = Site.objects.get_current().pk
        site_id = self.fields['site'].initial
        languages = get_language_tuple(site_id)
        self.fields['language'].choices = languages
        if not self.fields['language'].initial:
            self.fields['language'].initial = get_language()
        if 'page_type' in self.fields:
            try:
                type_root = Page.objects.get(publisher_is_draft=True, reverse_id=PAGE_TYPES_ID, site=site_id)
            except Page.DoesNotExist:
                type_root = None
            if type_root:
                language = self.fields['language'].initial
                type_ids = type_root.get_descendants().values_list('pk', flat=True)
                titles = Title.objects.filter(page__in=type_ids, language=language)
                choices = [('', '----')]
                for title in titles:
                    choices.append((title.page_id, title.title))
                self.fields['page_type'].choices = choices