在django中返回多個ID

Question

因此，我將django-polls教程帶入了一個簡單的博客。一些帖子通過外鍵將它們鏈接到它們。我遇到的問題是當我「投票」或單擊「再投票」它重新加載帖子，但它重新加載使用該投票的ID。

例子：

post1 - linked to - poll1 
post2 - no poll 
post3 - linked to - poll2 

所以當我投或再次點擊投票在投票中post3加載POST2。

我需要獲得帖子和投票的ID。

這裏是我的代碼： models.py：

class Post(models.Model): 
    title = models.CharField(max_length=60) 
    description = models.CharField(max_length=200) 
    body = models.TextField() 
    created = models.DateTimeField(auto_now_add=True) 

    def display_mySafeField(self): 
     return mark_safe(self.body) 

    def __unicode__(self): 
     return self.title 

class Poll(models.Model): 
    question = models.CharField(max_length=200) 
    total_votes = models.DecimalField(default=0.0, max_digits=5, decimal_places=2) 
    post = models.ForeignKey(Post) 
    voted = models.BooleanField(default=False) 

    def __unicode__(self): 
     return self.question 


# Choice for the poll 
class Choice(models.Model): 
    poll = models.ForeignKey(Poll) 
    choice = models.CharField(max_length=200) 
    votes = models.DecimalField(default=0.0, max_digits=5, decimal_places=2) 
    percentage = models.DecimalField(default=0.0, max_digits=5, decimal_places=2) 

    def __unicode__(self): 
     return self.choice 

views.py：

def vote(request, poll_id): 
    global choice 
    p = get_object_or_404(Poll, pk=poll_id) 
    try: 
     selected_choice = p.choice_set.get(pk=request.POST['choice']) 
    except (KeyError, Choice.DoesNotExist): 
     # Redisplay the poll voting form. 
     return render_to_response('post.html', { 
      'poll': p, 
      'error_message': "You didn't select a choice.", 
      }, context_instance=RequestContext(request)) 
    else: 
     selected_choice.votes += 1 
     p.total_votes += 1 
     selected_choice.save() 
     p.voted = True 
     p.save() 

     choices = list(p.choice_set.all()) 
     for choice in choices: 
      percent = choice.votes*100/p.total_votes 
      choice.percentage = percent 
      choice.save() 

     return HttpResponseRedirect(reverse("blog.views.post", args=[poll_id])) 

def vote_again(request, post_pk): 
    try: 
     p = get_object_or_404(Poll, pk=post_pk) 
    except (KeyError, Poll.DoesNotExist): 
    # Redisplay the poll voting form. 
     return render_to_response('post.html', { 
     'poll': p, 
     'error_message': "You didn't select a choice.", 
     }, context_instance=RequestContext(request)) 
    else: 
     p.voted = False 
     p.save() 
    return HttpResponseRedirect(reverse("blog.views.post", args=[post_pk])) 

urls.py：

url(r'^revote/(\d+)/$', 'blog.views.vote_again'), 
url(r'^polls/(?P<poll_id>\d+)/vote/$', 'blog.views.vote'), 

這一切都在第一篇作品和民意調查，但它崩潰時，我想添加民意測驗的帖子，不具有相同的PK。

任何幫助或方向將不勝感激。我一直在弄亂大約2個小時，這是django第一次讓我感到沮喪。提前道歉，因爲我99％肯定這是一個愚蠢的問題。

Answer 1

pk表示主鍵。所以你試圖得到一個與post_pk相同的poll對象。

嘗試，

p = get_object_or_404(Poll, post_id=post_pk)