創建模型管理員

我的博客應用的models.py是這樣的 -創建模型管理員

from django.db import models 
from django.utils import timezone 
from django.contrib.auth.models import User 

class PublishedManager(models.Manager): 
    def get_queryset(self): 
     return super(PublishedManager,  
        self).get_queryset().filter(status='published') 

class Post(models.Model): 
    STATUS_CHOICES = (
     ('draft', 'Draft'), 
     ('published', 'Published'), 
    ) 
    title = models.CharField(max_length=250) 
    slug = models.SlugField(max_length=250, unique_for_date='publish') 
    author = models.ForeignKey(User, related_name='blog_posts') 
    body = models.TextField() 
    publish = models.DateTimeField(default=timezone.now) 
    created = models.DateTimeField(auto_now_add=True) 
    updated = models.DateTimeField(auto_now=True) 
    status = models.CharField(max_length=10, choices= STATUS_CHOICES,  
       default='draft') 

    objects = models.Manager() 
    published = PublishedManager() 


    class Meta: 
    ordering = ('-publish',) 

    def __str__(self): 
    return self.title

，當我在shell中運行Post.published.filter(title__startswith='Who')

它給了我充分殼的錯誤這樣的 -

Traceback (most recent call last): 
File "/usr/local/lib/python3.4/dist-packages/django/core/management  
/commands/shell.py", line 77, in handle_noargs 
self.run_shell(shell=interface) 
File "/usr/local/lib/python3.4/dist-packages/django/core/management  
/commands/shell.py", line 65, in run_shell 
raise ImportError 
ImportError 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
File "/usr/lib/python3.4/code.py", line 90, in runcode 
exec(code, self.locals) 
File "<console>", line 1, in <module> 
AttributeError: type object 'Post' has no attribute 'published'

與此混淆。如果還有其他方法，請幫助我。給予bith ImportError以及AttributeError 我是否需要在shell中導入更多內容。已經導入

from django.contrib.auth.models import User 
from blog.models import Post

在我的殼

來源

2016-01-14 Fahad Mohd Shahid

你確定你的shell在添加管理器之前沒有啓動？即當你重新打開你的shell時問題是否會持續存在？ – SaeX

另外，請注意'class Meta'和'def __str__'的縮進。 – SaeX

謝謝，忘了重啓shell。 –

代碼看起來不錯，所以有可能你添加經理之前，你的外殼沒有啓動。重新啓動外殼，然後再試一次。

來源

2016-01-14 10:09:39 SaeX

創建模型管理員

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