AttributeError: 'NoneType' object has no attribute 'permission'
-------------------------------- -------------------------------`
{% if current_user.can(Permission.MODERATE_COMMENTS) %}

File "/home/centos/Desktop/workspace/flasky_163/app/models.py", line 207, in can

    def generate_email_change_token(self, new_email, expiration=3600):

        s = Serializer(current_app.config['SECRET_KEY'], expiration)

        return s.dumps({'change_email': self.id, 'new_email': new_email})

 

    def can(self, permission):

        return (self.role.permission & permission) == permission

 

    def is_administrator(self):

        return self.can(Permission.ADMINISTER)

 

    def ping(self):

AttributeError: 'NoneType' object has no attribute 'permission'`

我已經加入permission進資料庫了，為什麼程式還是提示這個問題？有沒有已經完成flasky這個計畫的前輩。指導一下唄，謝謝