[英]JavaScript Promises not passing right value in Chain
我有一个随机生成的字符串,可以将其设置为数据库表中属性的值。 成功更新记录后,我将发送一封电子邮件,其中包含与数据库记录相同的令牌。 不幸的是,我的then语句中的token参数不包含令牌,而是被值1代替。为什么会发生这种情况,并且它与promise功能的工作方式有关系吗?
这是示例控制台日志和SQL更新,出现在我的代码中:
This is the token: 78a4543cdd4cfd9d8c7fbad89aed9f902e07c372
Executing (default): UPDATE `user` SET `reset_password_token`='78a4543cdd4cfd9d8c7fbad89aed9f902e07c372',`reset_password_expires`='2016-04-02 14:46:13',`updatedAt`='2016-04-02 13:46:13' WHERE `email` = 'tester@gmail.com'
Then this token: 1
POST方法:
.post(function(req, res){
async.waterfall([
function(done){
crypto.randomBytes(20, function(err, buf){
var resetToken = buf.toString('hex');
done(err, resetToken);
});
}, (function(token, done){
console.log('This is the token: ' + token);
models.User.update({
resetPasswordToken: token,
resetPasswordExpires: Date.now() + 3600000
}, {
where: { email: req.body.email }
}).then(function(token, user, done){
console.log('Then this token: ' + token);
var transporter = nodemailer.createTransport(sgTransport(options));
var mailOptions = {
from: '"Test Email" <test@mywebsite.com',
to: 'tester@gmail.com',
subject: 'Password Rest Confirmation',
text: 'You are receiving this because you (or someone else) have requested the reset of the password for your account.\n\n' +
'Please click on the following link, or paste this into your browser to complete the process:\n\n' +
'http://' + req.headers.host + '/reset/' + token + '\n\n' +
'If you did not request this, please ignore this email and your password will remain unchanged.\n'
};
transporter.sendMail(mailOptions, function(error, info){
if(error){
return console.log(error);
}
console.log('Message sent: ' + info.response);
});
res.redirect('/');
//res.redirect('/password-reset-confirmation') Make a confirmation page with information or just send a flash message
})
})], function(error){
if(error){
console.log(error);
}
})
});
token
收到值1
因为update()
操作返回受影响的记录数 。 在这种情况下,只有一条记录已更新。
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