处理Django DeleteView中的PROTECT ERROR [英] Handle PROTECT ERROR in Django DeleteView

问题描述

我正在使用Django DeleteView 删除数据库中的项目。我使用了单独的模板来显示删除确认消息，但是当我按是按钮时，由于客户表与帐户表链接，因此得到 ProtectedError 。因此，我想处理 ProtectedError 并在同一模板中向用户提供另一条消息。

I am using Django DeleteView to delete items in my database. I have use separate template to show the delete confirmation message, but when I press the yes button I get ProtectedError since customer table is linked with Accounts table. Hence I want to handle the ProtectedError and give user another message in the same template.

这是我的代码曾经执行过删除操作：

Here is the code I have used to perform the delete:

class Customer(DeleteView):
    #Delete Customers
    model = Customer
    template_name = 'project_templates/delete_customer.html'

    def get_success_url(self):
        return reverse('inactive_customers')

如果有人可以向我建议一种处理这种情况的方法，那真是太好了。

It would be really great if someone can suggest me a method to handle this situation.

推荐答案

您应该能够捕获该异常。当您查看 DeletionMixin ：

You should be able to catch the exception. When you look at the DeletionMixin:

https://github.com/django/django/blob/master/django/views/generic/edit.py# L256

您可以覆盖 post 方法并实现以下操作：

You can override the post method and achieve something like:

def post(self, request, *args, **kwargs):
    try:
        return self.delete(request, *args, **kwargs)
    except ProtectedError:
        # render the template with your message in the context
        # or you can use the messages framework to send the message

希望这会有所帮助。

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