html中orm反向查询

<p>项目管理员：

    {% if user.project_user_set.all.0.is_guanliyuan %}

    <input type="radio" checked name="admin-{{ user.id }}">
    {% else %}
    <input type="radio" name="admin-{{ user.id }}">
    {% endif %}
    是</p>

所属项目：
<select multiple class="form-control" id="project-{{ user.id }}" >
    {% for proje in project_list %}
        {% for pro1 in user.project_user_set.all %}
        {% for pro2 in pro1.productname.all %}
            {% if proje.name == pro2.name %}
                <option name="project" selected >{{ proje.name }}</option>
            {% else %}
                <option name="project" >{{ proje.name }}</option>
            {% endif %}
        {% endfor %}
        {% endfor %}
    {% endfor %}
</select>

class Newusers(AbstractUser):
    qq=models.IntegerField('qq',blank=True,null=True,unique=True)
    mobile=models.IntegerField('手机号',null=True,unique=True,blank=True)
    login_lock=models.BooleanField('是否锁定',default=False)
    status=models.BooleanField('状态',default=False)
    work=models.ForeignKey(Work,null=True,on_delete=None)
    token=models.CharField('token',max_length=252,null=True)
    class Meta:
        verbose_name = u'用户'
        verbose_name_plural = verbose_name
        ordering = ['-id']
    def __str__(self):
        return str(self.username)

class Project_user(models.Model):
    username = models.ForeignKey(Newusers)
    productname = models.ManyToManyField(Project,null=True)
    is_guanliyuan=models.BooleanField('项目管理员',default=False)