Inner FormSet需要手动刷新

时间:2013-06-29 17:28:26

标签: django django-forms

我注意到FormSet的奇怪行为嵌套在另一个表单中 示例应用:

####   forms:   ####

class BookForm(forms.Form):
    title = forms.CharField()


BookFormSet = formset_factory(BookForm, extra=3)


class PublisherForm(forms.Form):
    name = forms.CharField()
    books = BookFormSet(prefix='books')

用于显示表单的基于类的视图:

####   views:   ####

class PublisherCreateView(FormView):
    template_name = 'library/create.html'
    form_class = PublisherForm

    def form_valid(self, publisherForm):
        # workaround: somehow publisherForm's inner list need to be restored from POST request:
        # otherwise it'll be empty FormSet as if it was constructed using BookFormSet(prefix='books')
        books = BookFormSet(self.request.POST, self.request.FILES, prefix='books')
        publisherForm.books = books
        do_sth_fancy_dancy_with(publisherForm)
        return super(PublisherCreateView, self).form_valid(publisherForm)

用于显示PublisherForm的模板:

####   template:   ####

<form action="." method="post">{% csrf_token %}
    <div class="section">
        {{ form.as_p }}
    </div>

    <h2>Books</h2>
    <div class="books">
        {{ form.books.as_p }}
        <p><input type="button" id="add-row" value="Add another book"/></p>
    </div>

    <input type="submit" value="Save"/>
</form>

如果我在form_valid中省略前两行,则列表在浏览器中的修改不受影响 一个很好的解释为什么会发生这种情况,或者修改我的代码将会非常感激

1 个答案:

答案 0 :(得分:0)

我不确定你为什么认为它会做任何其他事情。不支持在表单内嵌套表单集或其他表单,并且文档中没有任何内容暗示它是什么。 Django必须专门包含代码,以便在该情况下使用帖子中的数据实例化formset,但事实并非如此。