构建一个两阶段的Django管理表单以添加对象？ [英] Build a two-stage Django admin form for adding an object?

问题描述

是否可以在Django admin中构建用于创建对象的两阶段表单？

Is it possible to build a two-stage form for creating an object in Django admin?

当管理员用户访问 / admin / my-app / article / add / ，我想显示一些选项。然后，该应用程序将基于创建的选择显示创建页面，其中包含预先计算的字段。

When an admin user visits /admin/my-app/article/add/, I'd like to display some options. Then, the app would display the creation page with pre-calculated fields based on the selections made.

推荐答案

您可以在<$ c $上覆盖 add_view 方法c> ModelAdmin （来源）的 myapp.article 。它负责呈现模型形式并将对象添加到数据库。

You could overwrite the add_view method on the ModelAdmin (Source) of myapp.article. It is responsible for rendering the modelform and adding objects to the database.

在添加功能时，您可能希望保持原始代码不变，而不是复制/修改它。

While adding your functionality, you likely want to keep the original code intact instead of copying/modifying it.

草稿

def add_view(self, request, **kwargs):
    if Stage1:
        do_my_stuff()
        return response
    else:
        return super(ModelAdmin, self).add_view(self, request, **kwargs)

现在您需要区分两个阶段。 GET查询字符串中的参数可以做到这一点。要将初始数据传递给管理员中的表单，只需在查询字符串中包含字段名称值对作为参数。

Now you need to distinguish between the two stages. A parameter in the GET query string could do that. To pass initial data to a form in the admin, you only need to include the fieldname value pairs as parameters in the querystring.

草稿2

def add_view(self, request, **kwargs):
    if 'stage2' not in request.GET:
        if request.method == 'POST':
            # calculate values
            parameters = 'field1=foo&field2=bar'
            return redirect('myapp_article_add' + '?stage2=1&' + parameters)
        else:
            # prepare form for selections
            return response
    else:
        return super(ModelAdmin, self).add_view(self, request, **kwargs)

您可能需要查看代码以在您的请求中返回正确的响应第一阶段。有几个模板变量 add_view 设置，但希望这是一个很好的开始。

You probably need to look at the code to return a correct response in your first stage. There are a couple of template variables add_view sets, but hopefully this is a good start to look further.

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