猫鼬预保存钩子中的异步功能不起作用 [英] Async function in mongoose pre save hook not working

问题描述

在预保存钩子中调用异步函数会使我返回undefined作为密码.我在这里从根本上误解了async吗?我已经在我的应用程序的其他区域成功使用了它，而且看起来工作正常……

Calling an async function in a pre save hook is returning me undefined for the password. Am I fundamentally misunderstanding async here? I've used it successfully in other areas of my app an it seems to be working fine...

userSchema.pre('save', function (next) {

  let user = this

  const saltRounds = 10;

  const password = hashPassword(user)
  user.password = password;

  next();

})


async hashPassword(user) {

    let newHash = await bcrypt.hash(password, saltRounds, function(err, hash) {

    if (err) {
      console.log(err)
    }

    return hash    

  });

  return newHash

}

推荐答案

我认为您需要处理hashPassword返回的promise:

I think you'd need to handle the promise returned by hashPassword:

 hashPassword(user)
 .then(password => {user.password = password
                    next()}
 )

我认为您无法将userSchema.pre转换为异步功能.

I don't think you can turn userSchema.pre into an async function.

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