Question

在Django的一个简单的论坛应用程序中，我希望在每个线程上由多个用户在同一页面上呈现帖子（就像你在VB和其他经典论坛上看到的那样）。

以下是模型：

class Post(models.Model):
    title = models.CharField(max_length=75, null=True, blank=True)
    created = models.DateTimeField(auto_now_add=True)
    creator = models.ForeignKey(User, blank=True, null=True)
    updated = models.DateTimeField(auto_now=True)
    topic = models.ForeignKey(Topic)
    body = models.TextField(max_length=10000)


class Topic(models.Model):
    title = models.CharField(max_length=100)
    description = models.TextField(max_length=10000, null=True)
    forum = models.ForeignKey(Forum)
    created = models.DateTimeField()
    creator = models.ForeignKey(User, blank=True, null=True)
    updated = models.DateTimeField(auto_now=True)
    closed = models.BooleanField(blank=True, default=False)
    published = models.BooleanField(blank=True, default=False)
    visits = models.IntegerField(default = 0)
    weight = models.IntegerField(blank=True, default=0)
    slug = models.CharField(max_length=100, blank=True)


    def num_posts(self):
        return self.post_set.count()

    def num_replies(self):
        return max(0, self.post_set.count() - 1)

    def last_post(self):
        if self.post_set.count():
            return self.post_set.order_by("-created")[0]

    def __unicode__(self):
        return unicode(self.creator) + " - " + self.title

def save(self, *args, **kwargs):
        super(Topic, self).save(*args, **kwargs)

我也有这个奇怪的模型：

class PostCount(models.Model):
    user = models.OneToOneField(User)
    posts =  models.IntegerField(default=0)
    @classmethod
    def create(cls, user):
        postcount = cls(user=user)
        return postcount

以某种方式神奇地返回用户的主题数（不是帖子数），以便可以使用{{topic.creator.postcount.posts}}在模板中访问它们。

以及呈现主题的视图：

def topic(request, topic_id):
    """Listing of posts in a topic."""


    posts = Post.objects.filter(topic=topic_id).order_by("created")
    posts = mk_paginator(request, posts, DJANGO_SIMPLE_FORUM_REPLIES_PER_PAGE)
    topic = Topic.objects.get(pk=topic_id)    

    topic.visits += 1
    topic.save()

    forum = topic.forum
    return render_to_response("myforum/topic.html", add_csrf(request, posts=posts, pk=topic_id,
        topic=topic, forum= forum), context_instance=RequestContext(request))

我试过这个

posts = Post.objects.filter(topic=topic_id).order_by("created").annotate(creator_post_count=Count(creator__post_set))

但它不起作用。

所以我想知道如何最好地计算模板中用户的帖子数量？

Answer 1

你试过这个吗？：

.left { float: left; width: 48%; margin-right: 2%; }
.right { float: left; width: 50%; }

或直接在模板中打印posts = Post.objects.filter(topic=topic_id).order_by('created').annotate(creator_post_count=Count('creator__post_set_id', distinct=True))？

如何计算Django中几个用户的相关对象？

1 个答案: