因此，我尝试运行我一直在从事的该项目，这是一个简单的Django博客，但是当我尝试启动服务器时，出现以下错误：
pkr()这是我在Django项目的博客应用中的urls.py文件：
Performing system checks...
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x000001A861F736A8>
Traceback (most recent call last):
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\urls\resolvers.py", line 535, in url_patterns
iter(patterns)
TypeError: 'module' object is not iterable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\utils\autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\core\management\commands\runserver.py", line 117, in inner_run
self.check(display_num_errors=True)
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\core\management\base.py", line 379, in check
include_deployment_checks=include_deployment_checks,
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\core\management\base.py", line 366, in _run_checks
return checks.run_checks(**kwargs)
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\core\checks\registry.py", line 71, in run_checks
new_errors = check(app_configs=app_configs)
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\core\checks\urls.py", line 40, in check_url_namespaces_unique
all_namespaces = _load_all_namespaces(resolver)
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\core\checks\urls.py", line 67, in _load_all_namespaces
namespaces.extend(_load_all_namespaces(pattern, current))
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\core\checks\urls.py", line 57, in _load_all_namespaces
url_patterns = getattr(resolver, 'url_patterns', [])
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\utils\functional.py", line 37, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\Alireza\Anaconda3\lib\site-packages\django\urls\resolvers.py", line 542, in url_patterns
raise ImproperlyConfigured(msg.format(name=self.urlconf_name))
django.core.exceptions.ImproperlyConfigured: The included URLconf '<module 'blog.urls' from 'E:\\Projects\\Python\\web applications\\Django Simple Blog\\simple_blog\\blog\\urls.py'>' does not appear to have any patterns in it. If you see valid patterns in the file then the issue is probably caused by
a circular import.
这是我在同一应用中的views.py：
from django.conf.urls import re_path
from blog import views
urlpattrens = [
re_path(r'^$', views.PostListView.as_view(), name='post_list'),
re_path(r'^about/$', views.AboutView.as_view(), name='about'),
re_path(r'^post/(?P<pk>\d+)$', views.PostDetailView.as_view(), name = 'post_detail'),
re_path(r'^post/new/$', views.CreatePostView.as_view(), name='post_new'),
re_path(r'^post/(?P<pk>\d+)/edit/$', views.PostUpdateView.as_view(), name='post_edit'),
re_path(r'^post/(?P<pk>\d+)/remove/$', views.PostDeleteView.as_view(), name='post_remove'),
re_path(r'^drafts/$', views.DraftListView.as_view(), name='post_draft_list'),
re_path(r'^post/(?P<pk>\d+)/publish/$', views.post_publish, name='post_publish'),
re_path(r'^post/(?P<pk>\d+)/comment/$', views.add_comment_to_post, name='add_comment_to_post'),
re_path(r'^comment/(?P<pk>\d+)/approve/$', views.comment_approve, name='comment_approve'),
re_path(r'^comment/(?P<pk>\d+)/remove/$', views.comment_remove, name='comment_remove'),
]
我不知道自己做错了什么，还是Django对此很敏感，但是我是Django新手，我对这种错误还不太熟悉。
这是我在博客应用中的forms.py：
from django.shortcuts import render, get_object_or_404, redirect
from django.utils import timezone
from django.urls import reverse_lazy
from blog.models import Post, Comment
from blog.forms import PostForm, CommentForm
from django.contrib.auth.decorators import login_required
from django.contrib.auth.mixins import LoginRequiredMixin
from django.views.generic import (TemplateView, ListView, DetailView, CreateView, UpdateView, DeleteView)
class AboutView(TemplateView):
template_name = 'about.html'
class PostListView(ListView):
model = Post
# Customizing the generic class:
def get_queryset(self):
# grab all the objects from the post model and filter out conditions:
# grab published date __less than or equal to the current time and order them by published date (- means by descending order)
# Field lookups in the django documentation
return Post.objects.filter(published_date__lte=timezone.now()).order_by('-published_date')
class PostDetailView(DetailView):
model = Post
class CreatePostView(LoginRequiredMixin, CreateView):
# Preventing anyone to access this function anonymouslly for usual views(function based) using decorators is enough
# but here we are using class based views and should use the "LoginRequiredMixin"
login_url = '/login/'
redirect_field_name = 'blog/post_detail.html'
form_class = PostForm
model = Post
class PostUpdateView(LoginRequiredMixin, UpdateView):
login_url = '/login/'
redirect_field_name = 'blog/post_detail.html'
form_class = PostForm
model = Post
class PostDeleteView(LoginRequiredMixin, DeleteView):
model = Post
success_url = reverse_lazy('post_list')
class DraftListView(LoginRequiredMixin, ListView):
login_url = '/login/'
redirect_field_name = 'blog/post_list.html'
model = Post
def get_queryset(self):
return Post.objects.filter(published_date__isnull = True).order_by('created_date')
################################
###############################
@login_required
def post_publish(request, pk):
post = get_object_or_404(Post, pk=pk)
post.publish
return redirect('post_detail', pk=pk)
@login_required # make the entire view to be required as logged in
def add_comment_to_post(request, pk): # get the request alog with the pk which is passed
post = get_object_or_404(Post, pk = pk) # either get the object or 404 page(can't find it)
if request.method == 'POST': # if the request is 'POST' means someone actually filled in the form and hit Enter
form = CommentForm(request.POST) #
if form.is_valid():
comment = form.save(commit = False)
comment.post = post # in models.py comment has an attribute which is post and it's a foreign key to the Post model
comment.save()
return redirect('post_detail', pk = post.pk)
else:
form = CommentForm()
return render(request, 'blog/comment_form.html', {'form':form})
@login_required
def comment_approve(request, pk):
comment = get_object_or_404(Comment, pk = pk)
comment.approve() # run the approve function in the Comment class in models.py file to approve the comment
return redirect('post_detail', pk = comment.post.pk)
@login_required
def comment_remove(request, pk):
comment = get_object_or_404(Comment, pk = pk)
post_pk = comment.post.pk
comment.delete()
return redirect('post_detail', pk = post_pk)
以及博客应用中的我的models.py：
from django import forms
from blog.models import Post,Comment
class PostForm(forms.ModelForm):
class Meta():
model = Post
fields = ('author', 'title', 'text')
widgets = {
'title': forms.TextInput(attrs = {'class': 'textinputclass'}),
'text': forms.Textarea(attrs = {'class': 'editable medium-editor-textarea postcontent'})
}
class CommentForm(forms.ModelForm):
class Meta():
model = Comment
fields = ('author', 'text')
widgets = {
'author': forms.TextInput(attrs={'class':'textinputclass'}),
'text': forms.Textarea(attrs = {'class': 'editable medium-editor-textarea'})
}
最后是我的主要urls.py：
from django.db import models
from django.utils import timezone
from django.urls import reverse
# Blog Models:
class Post(models.Model):
author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
title = models.CharField(max_length = 200)
text = models.TextField()
create_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 approve_comments(self):
return self.comments.filter(approved_comment = True)
# After Creating the post go to the post detail page by the primary key you created for it
def get_absolute_url(self):
return reverse("post_detail", kwargs={'pk': self.pk})
def __str__(self):
return self.title
class Comment(models.Model):
post = models.ForeignKey('blog.Post', related_name='comments', on_delete=models.CASCADE)
author = models.CharField(max_length = 200)
text = models.TextField()
create_date = models.DateTimeField(default = timezone.now())
approved_comment = models.BooleanField(default = False)
def approve(self):
self.approved_comment = True
self.save()
# After approving a comment go back to the list of all the posts
def get_absolute_url(self):
return reverse('post_list')
def __str__(self):
return self.text
也是已安装应用程序的列表：
from django.conf.urls import url, include
from django.contrib import admin
from django.urls import path
from django.contrib.auth import views
urlpatterns = [
path('admin/', admin.site.urls),
url(r'', include('blog.urls')),
url(r'accounts/login/$', views.LoginView, name='login'),
url(r'accounts/logout/$', views.LogoutView, name = 'logout', kwargs={'next_page':'/'}),
]