需要在django管理界面上显示用户计数其他数据计数

class UserAdmin(DjangoUserAdmin): """Define admin model for custom User model with no email field.""" fieldsets = ( (None, {'fields': ('email', 'password')}), (_('Personal info'), {'fields': ('first_name', 'last_name','Mobile_number','Address','avatar','AI','U_ID')}), (_('Permissions'), {'fields': ('is_active', 'is_staff', 'is_superuser', 'groups', 'user_permissions')}), (_('Important dates'), {'fields': ('last_login', 'date_joined')}), ) add_fieldsets = ( (None, { 'classes': ('wide',), 'fields': ('email', 'password1', 'password2'), }), ) list_display = ('email', 'first_name', 'last_name', 'is_staff','Mobile_number','Address','avatar','AI','U_ID') search_fields = ('email', 'first_name', 'last_name','Mobile_number','Address','avatar','AI','U_ID') ordering = ('email',)

一个想法是习俗 context-processor . 可以添加新的上下文处理器,如下所示:

# in context_processor.py

def user_count(request):
   return { 'total_user' : User.objects.all().count() }

在中注册 settings.py 里面 TEMPLATE 配置:

   'OPTIONS': {
        'context_processors': [
            'django.template.context_processors.debug',
            'django.template.context_processors.request',
            'django.contrib.auth.context_processors.auth',
            'django.contrib.messages.context_processors.messages',
            'your_app.context_processor.user_count'
        ],
    },

在模板内使用:

<div>
    {{ user_count }}
</div>

供参考

上下文处理器 当您希望在每个模板中显示相同的数据时非常有用。但是如果这些数据只用于一个页面,并且可能需要通过modeladmin发送额外的上下文数据,那么 change_view 更适合这个。例如(从文档粘贴的副本):

class MyModelAdmin(admin.ModelAdmin):
    change_form_template = 'admin/myapp/extras/openstreetmap_change_form.html'

    def get_osm_info(self):
        pass

    def change_view(self, request, object_id, form_url='', extra_context=None):
        extra_context = extra_context or {}
        extra_context['osm_data'] = self.get_osm_info()
        return super().change_view(
            request, object_id, form_url, extra_context=extra_context,
        )