Django：从admin的form.clean（）访问请求对象 [英] Django: Access request object from admin's form.clean()

问题描述

我的问题与此类似：如何在表单的clean（）方法中访问请求对象或任何其他变量？

除了我有与管理表单相同的问题。所以我看不到一种方式来初始化自己的表单，所以 - 传递一个请求给它。

Except, I have the same problem with admin form. So I can't see a way to init the form myself, therefore - to pass a request to it.

事先感谢。

推荐答案

确实有办法解决你的问题！

Indeed, there is a way to solve your issue!

您将需要子类型，由 ModelAdmin.get_form（）并覆盖它：

You will need to subclass form provided by ModelAdmin.get_form() and override it:

class BusinessDocumentCommentForm(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop('request', None)
        # Voila, now you can access request anywhere in your form methods by using self.request!
        super(BusinessDocumentCommentForm, self).__init__(*args, **kwargs)
        if self.request.GET.get('document_pk', False):
            #Do something
    def clean(self):
        # Do something with self.request
        # etc.    
    class Meta:
        model = BusinessDocumentComment

class BusinessDocumentCommentAdmin(admin.ModelAdmin):

    form = BusinessDocumentCommentForm     

    def get_form(self, request, obj=None, **kwargs):

        AdminForm = super(BusinessDocumentCommentAdmin, self).get_form(request, obj, **kwargs)

        class AdminFormWithRequest(AdminForm):
            def __new__(cls, *args, **kwargs):
                kwargs['request'] = request
                return AdminForm(*args, **kwargs)

        return AdminFormWithRequest

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