跟着欢迎进入Flask大型教程项目!的教程学习Flask,到了重构用户模型的时候,运行脚本后报错:
TypeError: 'bool' object is not callable
这是用户模型:
class User(db.Model):
id = db.Column(db.Integer,primary_key=True)
nickname = db.Column(db.String(64),index=True,unique=True)
email = db.Column(db.String(120),unique=True)
posts = db.relationship('Post',backref='author',lazy='dynamic')
@property
def is_authenticated(self):
return True
@property
def is_active(self):
return True
@property
def is_anonymous(self):
return False
def get_id(self):
try:
return unicode(self.id) # python 2
except NameError:
return str(self.id) # python 3
def __repr__(self):
return '<User %r>' % (self.nickname)
这是调用的时候的代码:
from flask import render_template,flash,redirect,session,url_for,request,g
from flask.ext.login import login_user,logout_user,current_user,login_required
from app import app,db,lm,oid
from .forms import LoginForm
from .models import User
@app.route('/login',methods=['GET','POST'])
@oid.loginhandler
def login():
if g.user is not None and g.user.is_authenticated(): # 这一句报错
return redirect(url_for('index'))
form = LoginForm()
if form.validate_on_submit():
session['remember_me'] = form.remember_me.data
return oid.try_login(form.openid.data,ask_for=['nickname','email'])
return render_template('login.html',title='Sign In',form=form,providers=app.config['OPENID_PROVIDERS'])
解决方法:
按照参考资料里面的说法:
is_authenticated是属性而不是方法,把括号去掉就可以了。书里这一段有两处印刷错误,请参照git源码。
把出错的地方:if g.user is not None and g.user.is_authenticated():
修改为if g.user is not None and g.user.is_authenticated:
然后就不报错了。