我创建了一个类似按钮,当用户喜欢照片时将用户添加到查询中,并在与照片不同时将其删除。像匹配查询不存在 - Django
后端工程太棒了!前端,不是那么多。
我收到以下错误,当我尝试加载页面:Like matching query does not exist.
的问题是在这行代码:like = Like.objects.get(pk=obj.id)
可能有人请帮助我正确的代码显示{% if request.user.username in like.get_likers %}
和{{ like.likers.count }}
在我的HTML文件?
非常感谢!
HTML:
{% if request.user.username in like.get_likers %}
<input id="like_btn" name="{{ obj.slug }}" value="Liked" type="button" />
{% else %}
<input id="like_btn" name="{{ obj.slug }}" value="Like" type="button" />
{% endif %}
<h3>
<a href="{% url 'like_thread' %}"><strong id="like_count">{{ like.likers.count }}</strong></a>
</h3>
VIEWS.PY:
def photo_detail(request, photo_slug, username):
u = MyUser.objects.get(username=username)
obj = get_object_or_404(Photo, slug=photo_slug)
like = Like.objects.get(pk=obj.id)
context = {
"like": like,
"obj": obj
}
return render(request, "photos/photo_detail.html", context)
MODELS.PY:
class Photo(models.Model):
creator = models.ForeignKey(MyUser, null=False)
image = models.ImageField(upload_to='user/photos/', null=True, blank=True)
slug = models.SlugField(null=False, blank=False)
timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)
class Like(models.Model):
image = models.ForeignKey(Photo)
likers = models.ManyToManyField(MyUser, related_name='Likers', null=True, blank=True)
timestamp = models.DateTimeField(auto_now=False, auto_now_add=True)
def __unicode__(self):
return "CREATOR: %s | SLUG: %s" %(self.image.creator, self.image.slug)
def get_likers(self):
return ", ".join([a.username for a in self.likers.all()])
这几乎是它所说的,没有任何对象与Like查询匹配。这张特别的照片有没有喜欢? – onyeka
@onyeka不,它不。这是我最大的问题。如果它有以前的喜欢,我可以得到的数据没有问题。这是我最初遇到的麻烦。 – jape