检查所有对象是否属于列表django

Question

模板：

          {% for level in levels %}

                        {% if level.todo_set.all in tasks %}
                        <li>
                            <a href="javascript:;"><img src="{{ 
            level.badge.url }}" alt="" /></a>
                        </li>
                        {% else %}
                         <li>
                            <a href="javascript:;"><img src="{{ 
             level.locked_badge.url }}" alt="" /></a>
                        </li>
                          {% endif %}

                        {% endfor %}

views.朋友:

 @login_required(login_url='/account/login/')
 def StudentPublicProfile(request,pk=None):
     student = User.objects.get(pk=pk)

     levels = Level.objects.all()

     todos=ToDo.objects.all()
     list=[]

     tasks=Task.objects.filter(student=student)
     for task in tasks:
        list.append(task.todo)

     context={
    'student': student,
    'levels' : levels,
    'tasks' : list,
    'todos' : todos,
      }

     return render(request, 'student_public_profile2.html', 
             context)

models.朋友:

class Level(models.Model):
    number = models.IntegerField()
    badge = models.ImageField()
    locked_badge = models.ImageField()
    timestamp = 
    models.DateTimeField(auto_now_add=True,auto_now=False,blank=True, 
    null=True)
    unlock = models.CharField(max_length=10,default="A")

    def __str__(self):
        return str(self.number)
    def get_absolute_url(self):
        return reverse('student:level-detail', kwargs={'pk': self.pk})

class ToDo(models.Model):
     level = models.ForeignKey(Level, on_delete=models.CASCADE)
     name = models.CharField(max_length=150)
     description = models.TextField()
     timestamp = 
     models.DateTimeField(auto_now_add=True,auto_now=False,blank=True, 
     null=True)

     def __str__(self):
        return self.name





class Task(models.Model):
    level = models.ForeignKey(Level, on_delete=models.CASCADE)
    todo = models.ForeignKey(ToDo, on_delete=models.CASCADE)
    student = models.ForeignKey(User, on_delete=models.CASCADE)
    title = models.CharField(max_length=150)
    content = models.TextField()
    timestamp = models.TimeField(auto_now=True)
    datestamp = models.DateField( auto_now=True)
    like = 
    models.ManyToManyField(User,related_name='user_likes',blank=True)
    is_verified=models.BooleanField(default=False,blank=True)
    def __str__(self):
        return self.title

基本上，每个级别包含多个待办事项。我想检查任务列表中是否包含该级别的所有待办事项。这就是我在模板中所做的。但我没有得到正确的结果。这可能是什么问题？在这里，我正在检查某个级别的所有待办事项是否都由特定用户完成。只有当待办事项完成后，它才会保存在任务中

Answer 1

你可能最好在你的view内处理这个问题。

for level in levels_list:
    if Todo.objects.filter(level=level).count() == Task.objects.filter(student=student, level=level).count():
        return (level completion code)

Answer 2

 levellist=[]
 for level in levels:
   if ToDo.objects.filter(level=level).count()==
   Task.objects.filter(student=student,level=level).count():
        levellist.append(level.number)
 perc=(len(levellist)/len(levels))*100

在模板中：

            {% for level in levels %}

            {% if level.number in levellist %}
            <li>
                <a href="javascript:;"><img src="{{ level.badge.url }}" 
              alt=""/></a>
            </li>
            {% else %}
            <li>
                <a href="javascript:;"><img src="{{ level.locked_badge.url }}" 
             alt=""/></a>
            </li>
            {% endif %}

            {% endfor %}

找到了修复！