Django的ManyToManyField到權限

我有ManyToManyField到django.contrib.auth.models.PermissionDjango的ManyToManyField到權限

的問題是，當我打開編輯我的模型記錄的管理，數據庫的請求數量是241

class RoleManager(models.Manager): 

    def get_query_set(self): 
     return super(RoleManager, self).get_query_set().select_related('organization') 

class Role(models.Model): 

    name = models.CharField(u'Name', max_length = 80) 
    organization = models.ForeignKey(Organization) 
    permissions = models.ManyToManyField(Permission, blank = True) 

    objects = RoleManager() 

    def __unicode__(self): 
     return u'{name} in {organization}'.format(name = self.name, organization = self.organization.name)

的235模型選擇是：

SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 8 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 8 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 8 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 68 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 69 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 69 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 69 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 9 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 9 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 9 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 10 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 10 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 10 
SELECT ••• FROM "django_content_type" WHERE "django_content_type"."id" = 17

可能是我必須使用管理器來解決這個問題嗎？

我看着https://github.com/django/django/blob/master/django/contrib/auth/models.py

，看見你已被使用一些PermissionManager，但不知道究竟是什麼發生，如何讓它在我的經理

來源

2012-12-14 Julian Popov