使用查詢集在Django的ForLoops中錯誤地迭代

Question

views.py;

cvs = Cv.objects.all() 
    cv = Cv.objects.filter(author = request.user) 
    per = Person.objects.all() 
    gr = Group.objects.filter(members__name=request.user) 
    perr = Person.objects.filter(name=request.user) 
    mem = Membership.objects.filter(group = gr, person = perr) 


    form = GroupForm() 


    context = { 
     'gr': gr, 
     'per':per, 
     'mem':mem, 
     'form': form, 
     'cvs':cvs, 
     'cv':cv, 

    } 

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

models.py：

class Person(models.Model): 
    name = models.CharField(max_length=128) 

    def __str__(self):    # __unicode__ on Python 2 
     return self.name 


class Group(models.Model): 
    name = models.CharField(max_length=128) 
    members = models.ManyToManyField(Person, through='Membership') 
    description = models.TextField(max_length=350) 

    def __str__(self):    # __unicode__ on Python 2 
     return self.name 


class Membership(models.Model): 
    person = models.ForeignKey(Person) 
    leader = models.BooleanField(default=False) 
    group = models.ForeignKey(Group) 
    role = models.CharField(max_length=50) 

template.html：

{% for z in mem %} 
    <div class="jumbotron"> 
    <div class="jumbo2"> 
     <form method="POST" class="post-form"> {% csrf_token %} 
      <p id="name"><b>Groups name:</b> {{z.group}}</p><br> 

       {% for member in z.group.members.all %} 

         <p><b>Member:</b> {{member.name}} 

         {% if z.person.name == member.name %} 

         - {{z.role}}</p> 

         {% endif %}           

       {% endfor %} 

      </form> 

     </div> 
     </div> 

    {% endfor %} 

當我創建組，我的角色是 「組長」，當某人添加到組，他的角色是「Noob」。我想顯示該組的所有成員及其角色。問題是：我的實際輸出爲

damian - Team leader 
test     <- and no role, but should be "Noob" 

什麼，我想：

damian - Team Leader 
test - Noob 

任何knwo如何解決這個問題？ 感謝您的幫助！

Answer 1

由於含糊不清的變量名稱（如z），難以理解您的代碼。

這個問題似乎是，如果z.person.name == member.name只是打印角色。

如果您從循環中刪除該條件，那麼它將顯示組中的所有角色而不僅僅是一個。但要做到這一點，你需要通過member對象而不是z對象