将模型方法“此”问题归类

如何解决将模型方法“此”问题归类

我对SWT用户JWT产生了续集的问题，因为我需要创建一个模型方法，然后每当要执行验证时都应用此模型方法。

问题是当我尝试使用“ this”时，返回的是“ user”。

有人可以给我解释为什么以及一些可能的解决方法吗？ ty。

const { DataTypes } = require('sequelize')
const sequelize = require('../sequelize/db')
const bcrypt = require('bcryptjs')
const jwt = require('jsonwebtoken')

const User = sequelize.define('user',{
    id: {
        type: DataTypes.STRING,allowNull: false,primaryKey: true
    },name: {
        type: DataTypes.STRING,require: true,unique: true,validate: {
            len: [4,12]
        }
    },password: {
        type: DataTypes.STRING,validate: {
            len: {
                args: [6,12],msg: 'password between 6 and 12 characters'
            },async set(password) {
                this.setDataValue('password',await bcrypt.hash(password,8))
            }
        }
    },email: {
        type: DataTypes.STRING,validate: {
            isEmail: true
        }
    },avatar: {
        type: DataTypes.BLOB,},profile: {
        type: DataTypes.TEXT
    }
})

User.genAuthToken = async function () {
    const user = this
    const token = jwt.sign({ _id: user.id },'qweasd',{ expiresIn: '7 days' })
    return token
}

const a = async () => {
    await User.create({
        id: 'asdd',name: 'nishia',email: '[e-mail]',password: 'asdasd'
    })
    const token = await User.genAuthToken()
}

a()

解决方法

您需要一个实例方法，而不是一个类（静态）方法：

$ brew reinstall wget --with-debug
Usage: brew reinstall [options] formula

Uninstall and then install formula using the same options it was originally
installed with,plus any appended brew formula options.

Unless HOMEBREW_NO_INSTALL_CLEANUP is set,brew cleanup will then be run for
the reinstalled formulae or,every 30 days,for all formulae.

  -d,--debug                      If brewing fails,open an interactive
                                   debugging session with access to IRB or a
                                   shell inside the temporary build directory.
  -s,--build-from-source          Compile formula from source even if a
                                   bottle is available.
  -i,--interactive                Download and patch formula,then open a
                                   shell. This allows the user to run
                                   ./configure --help and otherwise
                                   determine how to turn the software package
                                   into a Homebrew package.
      --force-bottle               Install from a bottle if it exists for the
                                   current or newest version of macOS,even if
                                   it would not normally be used for
                                   installation.
      --keep-tmp                   Retain the temporary files created during
                                   installation.
  -f,--force                      Install without checking for previously
                                   installed keg-only or non-migrated
                                   versions.
  -v,--verbose                    Print the verification and postinstall
                                   steps.
      --display-times              Print install times for each formula at the
                                   end of the run.
  -q,--quiet                      Suppress any warnings.
  -h,--help                       Show this message.
Error: invalid option: --with-debug