嗨，我是 python 新手，当我在我的 python django 项目中添加评论选项时。
我想出了一个UnboundLocalError.
我的意见.py：
from .forms import PostForm, CommentForm
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin
from django.urls import reverse_lazy
from django.http import Http404
from django.views import generic
from django.contrib.auth.decorators import login_required
from .forms import PostForm, CommentForm
from .models import Post, Comment
from django.shortcuts import render, get_object_or_404, redirect
# pip install django-braces
from braces.views import SelectRelatedMixin
from . import forms
from . import models
from django.contrib.auth import get_user_model
User = get_user_model()
class PostList(SelectRelatedMixin, generic.ListView):
model = models.Post
select_related = ("user", "group")
class UserPosts(generic.ListView):
model = models.Post
template_name = "posts/user_post_list.html"
def get_queryset(self):
try:
self.post_user = User.objects.prefetch_related("posts").get(
username__iexact=self.kwargs.get("username")
)
except User.DoesNotExist:
raise Http404
else:
return self.post_user.posts.all()
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["post_user"] = self.post_user
return context
class PostDetail(SelectRelatedMixin, generic.DetailView):
model = models.Post
select_related = ("user", "group")
def get_queryset(self):
queryset = super().get_queryset()
return queryset.filter(
user__username__iexact=self.kwargs.get("username")
)
class CreatePost(LoginRequiredMixin, SelectRelatedMixin, generic.CreateView):
# form_class = forms.PostForm
fields = ('message','group')
model = models.Post
# def get_form_kwargs(self):
# kwargs = super().get_form_kwargs()
# kwargs.update({"user": self.request.user})
# return kwargs
def form_valid(self, form):
self.object = form.save(commit=False)
self.object.user = self.request.user
self.object.save()
return super().form_valid(form)
class DeletePost(LoginRequiredMixin, SelectRelatedMixin, generic.DeleteView):
model = models.Post
select_related = ("user", "group")
success_url = reverse_lazy("posts:all")
def get_queryset(self):
queryset = super().get_queryset()
return queryset.filter(user_id=self.request.user.id)
def delete(self, *args, **kwargs):
messages.success(self.request, "Post Deleted")
return super().delete(*args, **kwargs)
def add_comment_to_post(request, pk):
post = get_object_or_404(Post, pk=pk)
if request.method == "POST":
form = CommentForm(request.POST)
if form.is_valid():
comment = form.save(commit=False)
comment.post = post
comment.save()
return redirect('post_detail', pk=post.pk)
else:
form = CommentForm()
return render(request, 'posts/add_comment_to_post.html', {'form': form})
这是浏览器中显示的错误：
希望我会得到满意的答案这是我在单击评论按钮时遇到的错误，它发生在我向我的项目添加评论选项时。