User.findOne()不是函数

lal*_*hav 2 javascript node.js

passport.use('local-signup', new LocalStrategy({
    // by default, local strategy uses username and password, we will override with email
    usernameField : 'email',
    passwordField : 'password',
    passReqToCallback : true // allows us to pass back the entire request to the callback
},
(req, email, password, done) => {
    // asynchronous
    // User.findOne wont fire unless data is sent back
    process.nextTick(() => {

    // find a user whose email is the same as the forms email
    // we are checking to see if the user trying to login already exists
    User.findOne({ 'email' :  email },function(err, user){
        // if there are any errors, return the error

        if (err)
            return done(err);

        // check to see if theres already a user with that email
        if (user) {
            return done(null, false, {'errorMessages': 'That email is already taken.'});
        } else {

            // if there is no user with that email
            // create the user
            let newUser            = new User();

            // set the user's local credentials
            newUser.name       = req.body.fullname;
            //newUser.email          = email;
            newUser.password       = newUser.generateHash(password);


            // save the user
            newUser.save((err)=>{
                if (err)
                    return done(err);
                return done(null, newUser);
            });
        }
    });    
    });
}));
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上面的代码在使用护照js身份验证的节点js中,本地注册代码不起作用。

在上面的代码中,我得到了错误:

User.findOne() is not a function

我的架构还可以...请帮助

Geo*_*ley 5

您需要(如果您尚未创建)使用model like 创建数据实例

var UserDetails = mongoose.model('userInfo', UserDetail);
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现在您应该可以.findOne在这里使用了。

并确保您在类似集合之类的日期中定义结构。

 var Schema = mongoose.Schema;
 var UserDetail = new Schema({
  username: String,
  password: String
}, {
  collection: 'userInfo'
});
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小智 5

请使用下面的代码

module.exports = User = mongoose.model('user', UserSchema)
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UserSchema = new Schema User 应该是模型名称,并记住在顶部定义 const以在 MongoDB 中创建新模型并

用户应该知道你有的路线

router.post('/user') (req, res) => { code here }
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这样,您就可以将 mongoose 模式导出到路由用户,这可以findOne被视为 mongoose 函数。