python - Like 按钮正在工作,但在 django 中没有更改为 Like
问题描述
我一直在尝试与我的专家编码员一起调试此问题一天,但我们无法在此处确定问题。点赞按钮可以正常工作,我可以查询总点赞数,但 Clap 按钮不会更改为不喜欢,我们不确定原因。我相信错误在于 html 行:
{% if liked and post.slug == blog_post.slug %} Unlike {% else %} Like {% endif %}
或 django 行:
context["liked"] = True if blog_post.likes.filter(id=request.user.id).exists() else False
非常感谢您能在此处发现问题!
视图.py
def home_feed_view(request, *args, **kwargs):
context = {}
blog_posts = BlogPost.objects.all()
context['blog_posts'] = blog_posts
if request.method=="POST":
slug=request.POST["submit_slug"]
blog_post = get_object_or_404(BlogPost, slug=slug)
context['blog_post'] = blog_post
context["liked"] = True if blog_post.likes.filter(id=request.user.id).exists() else False
context['total_likes'] = blog_post.total_likes()
type_of_post = TypeofPostFilter(request.GET, queryset=BlogPost.objects.all())
context['type_of_post'] = type_of_post
paginated_type_of_post = Paginator(type_of_post.qs, 13 )
page = request.GET.get('page')
post_page_obj = paginated_type_of_post.get_page(page)
context['post_page_obj'] = post_page_obj
return render(request, "HomeFeed/snippets/home.html", context)
def LikeView(request, slug):
context = {}
user = request.user
if not user.is_authenticated:
return redirect('must_authenticate')
post = get_object_or_404(BlogPost, slug=slug)
liked = False
if post.likes.filter(id=request.user.id).exists():
post.likes.remove(request.user)
liked = False
else:
post.likes.add(request.user)
liked = True
return redirect(request.META.get('HTTP_REFERER', ''))
<td class="table-primary">
<form action="{% url 'HomeFeed:like_post' post.slug %}" method="POST">
{% csrf_token %}
<button type="submit" name="submit_slug" value="{{ post.slug }}" class='btn btn-primary btn-sm'>
{% if liked and post.slug == blog_post.slug %} Unlike {% else %} Like
{% endif %}
</button>
{{ post.total_likes }} Clap {{ post.total_likes|pluralize }}
</form>
</td>
网址.py
path('<slug>/like/', LikeView, name='like_post'),
模型.py
class BlogPost(models.Model):
chief_title = models.CharField(max_length=50, null=False, blank=False)
body = models.TextField(max_length=5000, null=False, blank=False)
likes = models.ManyToManyField(settings.AUTH_USER_MODEL, related_name='blog_posts', blank=True)
author = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
slug = models.SlugField(blank=True, unique=True)
解决方案
好的,这是一种更简单的方法来检查模型是否存在m2m
于另一个模型的字段中:
html
{% if request.user in blog_post.likes.all %} Unlike {% else %} Like {% endif %}
看法
if request.user in blog_post.likes.all():
PS在您的模型中,您应该将该字段重命名为likes
,likers
因为它与User
模型而不是Like
模型的关系:)
编辑
因此,要在单个页面上轻松显示帖子列表及其类似按钮,您想在模板中执行此操作:
视图.py
def posts(request):
blog_posts = BlogPost.objects.all()
return render(request, 'index.html', {'blog_posts': blog_posts})
索引.html
{% for post in blog_posts %}
<h1>{{ post.chief_title }}</h1>
<p>{{ post.author }} says: </p>
<b>{{ post.body }}</b>
<p> This post is liked by: </p>
{% for user in post.likes %}
<p>{{ user.username }}</p>
{% endfor %}
{% if request.user not in post.likes.all %}
<a href="{% url 'like_post' post.slug %}">Like</a>
{% else %}
<a href="{% url 'like_post' post.slug %}">Unlike</a>
{% endif %}
{% endfor %}
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