如何在Django表单中创建从属下拉列表？ [英] How to create Dependent dropdown in Django forms?

问题描述

我想创建相关的下拉菜单。例如，如果某人从第一个下拉菜单中选择书籍，则第二个下拉菜单应在该书籍下列出章节。我已经使用HTML / Jquery / AJAX实现了它。但是我现在有兴趣使用Django表单实现相同的目的。如有任何想法，请分享。

I want to create dependent dropdowns. For example, if someone selects book from the first dropdown, second dropdown should have chapter listed under that book. I have achieved it using HTML / Jquery / AJAX. But i am now interested to achieve same using Django forms. If anyone have idea, please share it.

在此先感谢您。

推荐答案

如果您不怕添加依赖项： django-select2 具有链接选择的实现，可以使用django表单API对其进行配置。他们的文档中的示例：

If you are not afraid of adding dependencies: django-select2 has an implementation of chained selects, which can be configured using the django form API. Example from their docs:

class AddressForm(forms.Form):
    country = forms.ModelChoiceField(
        queryset=Country.objects.all(),
        label=u"Country",
        widget=ModelSelect2Widget(
            model=Country,
            search_fields=['name__icontains'],
        )
    )

    city = forms.ModelChoiceField(
        queryset=City.objects.all(),
        label=u"City",
        widget=ModelSelect2Widget(
            model=City,
            search_fields=['name__icontains'],
            dependent_fields={'country': 'country'},
            max_results=500,
        )
    )

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