在这里,我想要的是加入两个表,在Post表中递增 like value ,在UserLikes表中添加另一行,其中包含当前用户,PostId,has_liked = True
。还要检查当前用户是否已经喜欢当前的帖子?以下是我的代码。
models.py
class Posts(models.Model):
title = models.CharField("Title", max_length=140)
url = models.FileField("URL")
likes = models.IntegerField("Likes", default=0)
by = models.ForeignKey(User)
date = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.title + ' by ' + str(self.by)
class UserLikes(models.Model):
post = models.ForeignKey(Posts)
user = models.ForeignKey(User)
has_liked = models.BooleanField("Liked", default=False)
def __str__(self):
return str(self.post) + ' by ' + str(self.user)
views.py
def like(request, pk):
if request.POST :
post = get_object_or_404(Posts, pk=pk)
print(request.user)
obj = UserLikes.objects.filter(post_id__in=post.id, user=request.user)
try:
if obj.has_liked is not True:
obj.post_id = post.id
obj.user = request.user
obj.has_liked = True
obj.save()
post.likes = str(int(post.likes) + 1)
post.save()
except AttributeError:
return HttpResponse(post.likes)
else:
return HttpResponse(post.likes, {'like': 'disabled'})
urls.py
url(r'^(?P<pk>\d+)/like/$', views.like, name='likes'),
那么,views.py文件中的查询是什么?
答案 0 :(得分:0)
likes
模型上的Post
字段只是复制数据,而只是通过查询得到喜欢的数量,如果需要,甚至可以使其成为Post
的属性使用它很多
@property
def number_of_likes(self):
return self.userlikes_set.count()
其余部分变得微不足道,只需为此实例添加用户名。