python之Django:不可散列类型 :'list' 错误

我正在从事 Django 2 项目。我有一个以前没有遇到过的错误。 HTML 页面:

<body> 
<h1>Postlar burada görüntüleniyor</h1> 
<a href="{% url 'postlar:post_olustur' %}">Post Oluştur</a> 
{% for post in listelenen_postlar %} 
<br> 
<a href="{% url 'postlar:post_detay' post.id  %}">{{post.başlık}}</a> 
<br> 
{{post.içerik}} 
<br> 
{{post.olusturma_zamanı}}/////////////////{{post.olusturma_zamanı|timesince}} ago 
<br> 
{{post.güncelleme_zamanı}} 
<br>    
{% endfor %} 

View .py

def post_listele(request): 
 listelenen_postlar = Post.objects.all() 
 context ={"listelenen_postlar":listelenen_postlar} 
 return render(request,"postlar/post_listele.html",context) 

我的应用程序中的 urls.py:

urlpatterns = [ 
url(r'^$',view=post_listele, name="post_listele"), 
url(r'^post_olustur/$',view=post_olustur, name='post_olustur'), 
url(r'^post_detay/(?P<id>[0-9]+)$',view=post_detay, name='post_detay'),] 

这是错误:

TypeError at /postlar/ 
unhashable type: 'list' 
Request Method: GET 
Request URL:    http://127.0.0.1:8000/postlar/ 
Django Version: 2.0.7 
Exception Type: TypeError 
Exception Value:     
unhashable type: 'list' 
Exception Location: C:\Users\mete\Desktop\blog_deneme\venv\lib\site-packages\django\db\models\sql\compiler.py in get_order_by, line 290 
Python Executable:  C:\Users\mete\Desktop\blog_deneme\venv\Scripts\python.exe 
Python Version: 3.6.4 
Python Path:     
['C:\\Users\\mete\\Desktop\\blog_deneme\\blog', 
 'C:\\Users\\mete\\Desktop\\blog_deneme\\venv\\Scripts\\python36.zip', 
 'C:\\Users\\mete\\Desktop\\blog_deneme\\venv\\DLLs', 
 'C:\\Users\\mete\\Desktop\\blog_deneme\\venv\\lib', 
 'C:\\Users\\mete\\Desktop\\blog_deneme\\venv\\Scripts', 
 'c:\\python\\Lib', 
 'c:\\python\\DLLs', 
 'C:\\Users\\mete\\Desktop\\blog_deneme\\venv', 
 'C:\\Users\\mete\\Desktop\\blog_deneme\\venv\\lib\\site-packages'] 
Server time:    Mon, 30 Jul 2018 22:50:33 +0000 

谢谢..

这是我的model.py

class Post(models.Model): 
başlık = models.CharField(max_length=120,blank=False,verbose_name="Başlık") 
içerik = models.CharField(max_length=220,verbose_name="İçerik") 
olusturma_zamanı = models.DateTimeField(auto_now_add=True) 
güncelleme_zamanı = models.DateTimeField(auto_now=True) 
 
def __str__(self): 
    return "{}".format(self.başlık) 
class Meta: 
    verbose_name_plural="Gönderilerim" 
    ordering = ["id"], 

请您参考如下方法:

看起来 Django 无法理解如何排序您的查询集...

尝试更改您的 Meta 类值:

ordering = ["id"],

到

ordering = ["id",]