django中的model()

def gen_private_file_share(request, repo_id):
    emails = request.POST.getlist('emails', '')
    s_type = request.POST.get('s_type', '')
    path = request.POST.get('path', '')
    perm = request.POST.get('perm', 'r')
    file_or_dir = os.path.basename(path.rstrip('/'))
    username = request.user.username

    for email in [e.strip() for e in emails if e.strip()]:
        if not is_valid_username(email):
            continue

        if not is_registered_user(email):
            messages.error(request, _('Failed to share to "%s", user not found.') % email)
            continue

        if s_type == 'f':
            pfds = PrivateFileDirShare.objects.add_read_only_priv_file_share(
                username, email, repo_id, path)


    next = request.META.get('HTTP_REFERER', None)
    if not next:
        next = SITE_ROOT
    return HttpResponseRedirect(next)



class PrivateFileDirShare(models.Model):
    from_user = LowerCaseCharField(max_length=255, db_index=True)
    to_user = LowerCaseCharField(max_length=255, db_index=True)
    repo_id = models.CharField(max_length=36, db_index=True)
    path = models.TextField()
    token = models.CharField(max_length=10, unique=True)
    permission = models.CharField(max_length=5)          
    s_type = models.CharField(max_length=5, default='f') 
    objects = PrivateFileDirShareManager()



class PrivateFileDirShareManager(models.Manager):
    def add_private_file_share(self, from_user, to_user, repo_id, path, perm):
        """
        """
        path = normalize_file_path(path)
        token = gen_token(max_length=10)

        pfs = self.model(from_user=from_user, to_user=to_user, repo_id=repo_id,
                         path=path, s_type='f', token=token, permission=perm)
        pfs.save(using=self._db)
        return pfs

    def add_read_only_priv_file_share(self, from_user, to_user, repo_id, path):
        """
        """
        return self.add_private_file_share(from_user, to_user, repo_id,
                                           path, 'r')

我的问题是

 pfs = self.model(from_user=from_user, to_user=to_user, repo_id=repo_id,
                         path=path, s_type='f', token=token, permission=perm) 

这里的self.model()是调用父类的构造函数吗？

---

self.model() 是什么，没运行前谁都不知道，只有运行时才知道这到底是什么。

但是从你的代码来看，只有 PrivateFileDirShare 覆盖了默认的管理器（Manager）， 也就是 PrivateFileDirShare 的对象 在使用 管理器时调 add_private_file_share 方法时才会 执行 到

pfs = self.model(from_user=from_user, to_user=to_user, repo_id=repo_id,
                         path=path, s_type='f', token=token, permission=perm)

这时我们也就知道了 self.model 代表了 PrivateFileDirShare的实例对象