如何在模板中显示当前用户在项目中的角色？

Question

有人能说说我错在哪里吗？

我有 Project 型号。每个项目都有成员。我有 project_detail 页面，我想在其中显示当前用户的用户名及其在项目中的角色。正确知道在模板中它只显示当前用户的用户名而不是他在项目中的角色。

models.py:

class Project(models.Model):
    members = models.ManyToManyField(User, through='Member', help_text=_('Members'))

ROLE_CHOICES = (
    ('manager', _('Manager')),
    ('developer', _('Developer')),
    ('business_analyst', _('Business Analyst')),
    ('system_analyst', _('System Analyst')),
)

class Member(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    project = models.ForeignKey(Project, on_delete=models.CASCADE)
    role = models.CharField(max_length=20, choices=ROLE_CHOICES)

views.py:

def project_detail(request, project_code):
    project = get_object_or_404(Project, pk=project_code, status='open')
    context = {'project': project,}
    return render(request, 'project/project_detail.html', context)

project_detail.html:

<span class="nav-link active navbar-text">
   {{ user.get_username }}:

   {% for member in project.member_set.all %}
       {% if member.user == user.get_username %}
          {{ member.get_role_display }}
       {% endif %}
    {% endfor %}
</span>

Answer 1

为什么要将用户与 get_username 的结果进行比较？这大概是 returns 一个用户名字符串，但用户就是一个用户。这会起作用：

{% if member.user == user %}
  {{ member.get_role_display }}
{% endif %}

但是不要这样做。遍历所有项目成员并为每个成员获取用户是非常低效的。相反，在视图中执行单个查询：

member = project.member_set.get(user=request.user)
context = {'project': project, 'role': member.get_role_display()}

如何在模板中显示当前用户在项目中的角色？

How to show in template current users role in project?

python

html

django

python-3.x

django-1.10