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python - 如何防止用户在 24 小时 django 后更新帖子

问题描述

我想阻止用户在发布日期后 24 小时后更新帖子

class Post(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE) 
    title= models.CharField(max_length=50)
    post = models.TextField(max_length=400)
    date = models.DateTimeField(auto_now_add=True)
    edit = models.DateTimeField(auto_now=True)

class PostForm(forms.ModelForm):
    class Meta:
       model = Post
       fields = '__all__'

class PostUpdateView(LoginRequiredMixin,SuccessMessageMixin,UpdateView):
    model = Post
    form_class = PostForm
    success_message = "updated successfully"
    template_name = 'store/create.html'
    success_url = reverse_lazy('lists')
    def form_valid(self,form):
        return super().form_valid(form)

我想让用户只能在发布日期的 24 小时之前更新帖子谢谢

标签： pythondjangodjango-models

解决方案

您可以过滤查询集，以便仅包含Post在过去 24 小时内编写的 s 的帖子：

from datetime import timedelta
from django.utils.timezone import now

class PostUpdateView(LoginRequiredMixin,SuccessMessageMixin,UpdateView):
    model = Post
    form_class = PostForm
    success_message = "updated successfully"
    template_name = 'store/create.html'
    success_url = reverse_lazy('lists')

    def get_queryset(self, *args, **kwargs):
        return super().get_queryset(*args, **kwargs).filter(
            date__gte=now() - timedelta(days=1)
        )

    def form_valid(self,form):
        return super().form_valid(form)

如果更新期限已“过期”，这将返回 HTTP 404 响应。

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