INT（）参数必须是字符串或数字，而不是 'datetime.date'

Question

我有问题djanggo 1.7和我使用Python 2.7

这个代码在models.py

class Tag(models.Model): 

    title   = models.CharField(max_length=50) 
    description  = models.TextField() 
    created_date = models.DateTimeField(default = timezone.now) 
    published_date = models.DateTimeField(blank=True, null=True) 

    def publish(self): 
     self.published_date = timezone.now() 
     self.save() 

    def __str__(self): 
     return self.title 

class Post(models.Model): 

    author   = models.ForeignKey('auth.User') 
    category  = models.ForeignKey(Category) 
    tag    = models.ForeignKey(Tag) 
    title   = models.CharField(max_length=200) 
    text   = models.TextField() 
    created_date = models.DateTimeField(default = timezone.now) 
    published_date = models.DateTimeField(blank=True, null=True) 

    def publish(self): 
     self.published_date = timezone.now() 
     self.save() 

    def __str__(self): 
     return self.title 

此是urls.py

from django.conf.urls import patterns, include, url 
from . import views 

urlpatterns = patterns('', 
    url(r'^$', views.post_list), 
    url(r'^post/(?P<pk>[0-9]+)/$', views.post_detail), 
    url(r'^post/new/$', views.post_new, name='post_new'), 
    url(r'^post/(?P<pk>[0-9]+)/edit/$', views.post_edit, name='post_edit'), 
) 

我很成功地makemigrations但是当我尝试/manage.py迁移我收到错误这样

TypeError: int() argument must be a string or a number, not 'datetime.date' 

你能帮我解决这个问题吗？

Answer 1

而不是models.DateTimeField(default = timezone.now)尝试models.DateTimeField(auto_now_add=True)