如何解决如何使用 Django 中的通用关系向我的博客文章添加喜欢
我正在尝试使用通用关系在 Django 中添加喜欢/不喜欢功能。有人可以帮我吗?
我的帖子模型
class Post(models.Model):
title = models.CharField(max_length=225)
post_image = models.ImageField(null=True,blank=True,upload_to="images/")
author = models.ForeignKey(User,on_delete=models.CASCADE)
body = models.TextField()
post_date = models.DateTimeField(auto_Now_add=True)
def __str__(self):
return self.title + ' | ' + str(self.author)
class Meta:
ordering = ['-post_date',]
def get_absolute_url(self):
return reverse('post-detail',args=(str(self.id)),)
提前致谢!
解决方法
创建一个新的类,如下所示:
class LikedPost(models.Model):
user = models.ForeignKey(User,on_delete=models.CASCADE)
post = models.ForeignKey(Post,on_delete=models.CASCADE)
liked_date = models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.post.title + " liked by " + self.user.username
然后,每当用户点击 like
按钮时,创建一个新的 LikedPost
如果不存在一个 user
喜欢 post
的 like
函数,否则删除 LikedPost
函数的 dislike
。
@login_required
def hit_like_button(request,pk):
# Get the id of post
post = get_object_or_404(Post,pk=pk)
# Create a new LikedPost if this post is not liked by this user.
liked_post,created = LikedPost.objects.get_or_create(
post=post,user=request.user
)
# If not created new LikedPost <=> exist LikedPost = dislike.
if not created: #If get_or_create() function not created a new LikedPost
liked_post.delete()
messages.info(request,"This post was disliked.")
else: # If created a new LikedPost => this user did not like this post
liked_post.save()
messages.info(request,"This post was liked.")
return redirect('home')
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。