Question

Django：如何做到使我可以对任何博客帖子（而不只是1个博客帖子）提交兴趣？目前，现在，当我向博客文章提交兴趣后，就无法再对任何其他博客文章提交兴趣。我将收到此消息，内容为“您已经对此文章提出了自己的兴趣”。即使我没有。

从我的模型的性质来看。我是否可以过滤兴趣模型中的“用户”字段，以便只检查该特定博客文章中的特定用户是否已经提交了兴趣？

因为我现在知道，他们正在基于所有博客文章对其进行过滤，只要我已经提交了1，它肯定存在。如果有帮助的话，也请告诉我您是否需要我的forms.py，urls.py。

views.py

def submit_interest_view(request, slug):
    form = SubmitInterestForm()
    user = request.user
    blog_post = get_object_or_404(BlogPost, slug=slug)
    num_blogpost = BlogPost.objects.filter(author=user).count()
    if blog_post.author.email == user.email:
        return HttpResponse('You cannot submit interest to your own post.')
    if Interest.objects.filter(user=request.user).exists() and request.method=="POST": 
        return HttpResponse('You have already submitted your interest to this post.')
    if request.method == 'POST':  
        form = SubmitInterestForm(request.POST, request.FILES)
        if form.is_valid():
            obj = form.save(commit=False)
            obj.user = user
            obj.blog_post = blog_post
            obj.save()
            InterestInvite.objects.create(interest=obj)
            messages.success(request, 'Your interests have been submitted', extra_tags='submittedinterest')
            return redirect(reverse('HomeFeed:main')) 
         else:
            messages.warning(request, 'Something went wrong. Please try again..', extra_tags='wronginterest')
            return render(request, "HomeFeed/submitinterest.html", {'form': form,'user': user, 'num_blogpost': num_blogpost, 'blog_post': blog_post}) 
    else:
        form = SubmitInterestForm()  
    return render(request, "HomeFeed/submitinterest.html", {'form': form,'user': user, 'num_blogpost': num_blogpost, 'blog_post': blog_post})

models.py

class Interest(models.Model):
   user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
   timestamp        = models.DateTimeField(auto_now_add=True)
   is_active            = models.BooleanField(blank=False, null=False, default=True)
   my_thoughts         = models.TextField(max_length=5000, null=False, blank=False)
   blog_post = models.ForeignKey(BlogPost, on_delete=models.CASCADE)


class BlogPost(models.Model):
 chief_title            = models.CharField(max_length=50, null=False, blank=False, unique=True)
 body                   = models.TextField(max_length=5000, null=False, blank=False)
 author                     = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
 slug                   = models.SlugField(blank=True, unique=True)

Answer 1

您检查是否已经存在兴趣对象

Interest.objects.filter(user=request.user).exists(): 

而不是查看特定帖子中该用户是否有兴趣行

Interest.objects.filter(user=request.user, blog_post=blog_post).exists()

由于这种情况，您的问题。

if Interest.objects.filter(user=request.user).exists() and request.method=="POST": 
        return HttpResponse('You have already submitted your interest to this post.')

应该将其更改为如下所示：

if Interest.objects.filter(user=request.user, blog=blog_post).exists() and request.method=="POST": 
        return HttpResponse('You have already submitted your interest to this post.')

说明：以上代码意味着你需要找到一个Interest在创建时指定User特定有趣BlogPost ，但你找到了Interested创建时User的有趣的任何 BlogPost