Abut HttpResponseRedirect reverse

Using Django Forms & APIs
1

Dear all,
My question is about “HttpResponseRedirect reverse” when using like button on a page.
I am making travel pages. I want to click a “like button” on city detail page and redirect reverse to city detail page again.
Here are my details:

Travel URL pattern:

path('travel/Usa/<slug:state_slug>/<slug:city_slug>/<slug:detail_slug>/', views.citydetail, name='citydetail'),

“like button” on citydetail page
Like URL pattern:

path('<slug:detail_slug>/likeusa/', views.likeusa, name='likeusa'),

Mode:

class Citydetail(models.Model):
    country = models.ForeignKey(Country, on_delete=models.CASCADE)
    state = models.ForeignKey(State, on_delete=models.CASCADE)
    city = models.ForeignKey(City, on_delete=models.CASCADE)
    citydetail = RichTextField(null=True, blank=True)
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    likes = models.IntegerField(default=0)
etc.......

    def get_urlj(self):
        return reverse('citydetail',args=[self.state.slug, self.city.slug, self.slug])

    def __str__(self):
        return "{0}.{1}".format(self.id, self.citydetail)

Like

class Likes(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='user_like')
    post = models.ForeignKey(Citydetail, on_delete=models.CASCADE, related_name='post_like')

    def user_liked_post(sender, instance, *args, **kwargs):
        like = instance
        post = like.post
        sender = like.user

    def user_unlike_post(sender, instance, *args, **kwargs):
        like = instance
        post = like.post
        sender = like.user
# Likes
post_save.connect(Likes.user_liked_post, sender=Likes)
post_delete.connect(Likes.user_unlike_post, sender=Likes)

Views

def citydetail(request, state_slug, city_slug, detail_slug ):
   user = request.user
    post=get_object_or_404(Citydetail,state__slug=state_slug,city__slug=city_slug,detail__slug=detail_slug)
    profile = Profile.objects.get(user=user)

return render(request, 'travel/usa/citydetail.html', locals())

@login_required
def like(request, detail_slug):
	user = request.user
	post = Citydetail.objects.get(slug=detail_slug)
	current_likes = post.likes
	liked = Likes.objects.filter(user=user, post=post).count()

	if not liked:
		like = Likes.objects.create(user=user, post=post)
		#like.save()
		current_likes = current_likes + 1

	else:
		Likes.objects.filter(user=user, post=post).delete()
		current_likes = current_likes - 1

	post.likes = current_likes
	post.save()

	return HttpResponseRedirect(reverse('citydetail', args=[detail_slug]))
(I dont know how to reverse to detail page )

citydetail html

 <div class="media-right">
             <a href="{% url 'likeusa'  detail_slug %}"> <i class="material-icons">favorite</i></a>
             <p>{{ post.likes }}likes</p>
        </div>

DB:
suppose my urlpattern is like /usa/texas/huston/detail/

Error:

NoReverseMatch at /detail/like/
Reverse for 'detail' with arguments '('detail',)' not found. 1 pattern(s) tried: ['usa/(?P<state_slug>[-a-zA-Z0-9_]+/(?P<city_slug>[-a-zA-Z0-9_]+)/+)/(?P<detail_slug>[-a-zA-Z0-9_]+)/\\Z']

How could I Make “HttpResponseRedirect reverse” directly to detail page when click “like icon” on detail page.
Best regards

2

Your url for citydetail requires three parameters. You would need to supply all three when trying to reverse it.

It also looks like you have an appropriate method in your Citydetail model, get_urlj. If you have the instance of Citydetail, you can call that method directly.