Django 删除功能实现：解决 ValueError 与误删问题

@login_required()
def delete(request, id):
     poost = get_object_or_404(post, pk=id)
     if request.user == post.author: # <-- 问题所在！
          poost.delete()
          messages.error(request, f'Post deleted!')
          return redirect("/")

<!-- ... 删除按钮 ... -->
<a href="#myModal" class="btn btn-danger btn-small" id="deleteButton" data-toggle="modal" data-target="#myModal">Delete ...</a>

<!-- ... 模态框 ... -->
<div id="myModal" class="modal fade">
  <!-- ... 模态框内容 ... -->
  <p class="text-muted">Do you really want to delete {{ post.title}}? This process cannot be undone.</p>
  <div class="modal-footer">
    <button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
    <a type="button" class="btn btn-danger" href="{% url 'delete' post.id %}">Delete</a>
  </div>
</div>

from django.forms.models import BaseModelForm
from django.http import HttpResponse, Http404
from django.shortcuts import render, redirect, get_object_or_404
from django.contrib.auth.decorators import login_required
from .forms import PostForm
from .models import post # 假设模型名为小写 'post'
from django.contrib import messages
from django.views.decorators.http import require_POST # 导入 require_POST

# ... 其他导入 ...

@login_required
@require_POST # 确保此视图只接受 POST 请求
def delete(request, id):
    poost = get_object_or_404(post, pk=id) # 获取帖子对象

    # 验证当前用户是否是帖子的作者
    if request.user == poost.author: # 修正：将 post.author 改为 poost.author
        poost.delete()
        messages.success(request, f'帖子 "{poost.title}" 已成功删除！') # 使用 success 消息更合适
        return redirect("/") # 删除成功后重定向到首页
    else:
        # 如果用户不是作者，则不允许删除，并给出提示
        messages.error(request, "您没有权限删除此帖子。")
        # 可以重定向到帖子详情页或首页，避免返回 None
        return redirect("detail", id=id) # 假设有一个名为 'detail' 的 URL 模式
        # 或者 return redirect("/")

<!-- post.html 模板片段（在循环中渲染时）-->
<div class="card mb-4 box-shadow">
  <!-- ... 其他内容 ... -->
  {% if user.is_authenticated and user == post.author %}
    <a href="#deleteModal-{{ post.id }}" class="btn btn-danger btn-small" data-toggle="modal" data-target="#deleteModal-{{ post.id }}">
      Delete <svg>...</svg>
    </a>

    <!-- 对应的模态框 -->
    <div class="modal fade" id="deleteModal-{{ post.id }}">
      <div class="modal-dialog modal-confirm">
        <div class="modal-content">
          <div class="modal-header">
            <h4 class="modal-title">确定删除吗？</h4>
            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
          </div>
          <div class="modal-body">
            <p class="text-muted">您真的要删除 "{{ post.title }}" 吗？此操作无法撤销。</p>
          </div>
          <div class="modal-footer">
            <button type="button" class="btn btn-secondary" data-dismiss="modal">取消</button>
            <!-- 删除操作应通过 POST 请求提交表单 -->
            <form action="{% url 'delete' post.id %}" method="post" style="display: inline;">
                {% csrf_token %}
                <button type="submit" class="btn btn-danger">删除</button>
            </form>
          </div>
        </div>
      </div>
    </div>
  {% endif %}
</div>

from django.views.generic import DeleteView
from django.urls import reverse_lazy
from django.contrib.auth.mixins import LoginRequiredMixin, UserPassesTestMixin
from django.contrib import messages
from .models import post # 假设模型名为小写 'post'

class PostDeleteView(LoginRequiredMixin, UserPassesTestMixin, DeleteView):
    model = post # 指定要删除的模型
    template_name = 'posts/post_confirm_delete.html' # 确认删除的模板文件
    success_url = reverse_lazy('home') # 删除成功后重定向的 URL 名称

    def test_func(self):
        # UserPassesTestMixin 要求实现此方法来检查用户权限
        # 只有帖子的作者才能删除
        post_obj = self.get_object()
        return self.request.user == post_obj.author

    def form_valid(self, form):
        # 删除前添加成功消息
        messages.success(self.request, f'帖子 "{self.get_object().title}" 已成功删除！')
        return super().form_valid(form)

    def handle_no_permission(self):
        # 处理权限不足的情况
        messages.error(self.request, "您没有权限删除此帖子。")
        return redirect('detail', pk=self.kwargs['pk']) # 重定向到详情页