关于django管理，为什么django要向url添加?_changelist_filters？

Question

当我单击add时，为什么django在url ?_changelist_filters=user%3D5275上添加？我在change_list上的网址最初是?user=5275。问题是用户应该在select输入中被选中，而它不是。如果我在?user=5275中更改它，它是工作的。

如何使django“读取”?_changelist_filters=user%3D5275或在?user=5275中更改它

Answer 1

您可以在AdminForm中添加如下内容：

class UsersAdminForm(forms.ModelForm):
    @staticmethod
    def parse_filter_kwargs(**kwargs):
        if 'initial' in kwargs:
            if u'_changelist_filters' in kwargs['initial']:
                filters = kwargs['initial'][u'_changelist_filters']
                var, value = filters.split('=')
                if var == u'user':
                    return {'initial': {var: value}}
        return kwargs

    def __init__(self, *args, **kwargs):
        kwargs = self.parse_filter_kwargs(**kwargs)
        super(UsersAdminForm, self).__init__(*args, **kwargs)

Answer 2

所有_changelist_filters仿射的解

class ProductForm(forms.ModelForm):
    @staticmethod
    def parse_filter_kwargs(**kwargs):
        if 'initial' in kwargs:
            if u'_changelist_filters' in kwargs['initial']:
                filters = kwargs['initial'].pop('_changelist_filters')
                for key, value in [p.split('=') for p in filters.split('&')]:
                    kwargs['initial'][key] = value
        return kwargs

    def __init__(self, *args, **kwargs):
        kwargs = self.parse_filter_kwargs(**kwargs)
        super(ProductForm, self).__init__(*args, **kwargs)

Answer 3

from urllib.parse import parse_qsl

query_params = dict(parse_qsl(request.GET['_changelist_filters']))

print(query_params.get('user'))