我刚刚在NodeJS上编写了todolist api项目。表达。我遵循一些使用Sequelize与DB:SQLite交互的指令。但我遇到Sequelize创建类方法如下:
user.js的
var bcrypt = require('bcrypt');
var _ = require('underscore');
module.exports = (sequelize, DataTypes) => {
var User = sequelize.define('user', {
email: {
type: DataTypes.STRING,
allowNull: false,
unique: true,
validate: {
isEmail: true
}
},
salt: {
type: DataTypes.STRING
},
password_hash: {
type: DataTypes.STRING
},
password: {
type: DataTypes.VIRTUAL,
allowNull: false,
validate: {
len: [6, 100]
},
set: function (value) {
var salt = bcrypt.genSaltSync(10);
var hashedPassword = bcrypt.hashSync(value, salt);
this.setDataValue('password', value);
this.setDataValue('salt', salt);
this.setDataValue('password_hash', hashedPassword);
}
}
}, {
hooks: {
beforeValidate: (user, options) => {
if (typeof user.email === 'string') {
user.email = user.email.toLowerCase();
}
}
}
});
return User;
// Class methods
User.prototype.toPublicJSON = function() {
var json = this.toJSON();
return _.pick(json, 'id', 'email', 'createdAt', 'updatedAt');
};
User.authenticate = (body) => {
return new Promise ((resolve, reject) => {
if (typeof body.email !== 'string' || typeof body.password !== 'string') {
return reject();
}
user.findOne({
where: {
email: body.email
}
}).then((user) => {
if (!user || !bcrypt.compareSync(body.password, user.get('password_hash'))) {
return reject();
}
resolve(user);
}, (e) => {
reject();
})
});
};
}
db.js
var Sequelize = require('sequelize');
var sequelize = new Sequelize(undefined, undefined, undefined, {
'dialect': 'sqlite',
'storage': __dirname + '/data/dev-todo-api.sqlite'
});
db = {};
db.todo = sequelize.import(__dirname + '/models/todo.js');
db.user = sequelize.import(__dirname + '/models/user.js');
db.sequelize = sequelize;
db.Sequelize = Sequelize;
module.exports = db;
user.js的
app.post('/users/login', (req, res) => {
var body = _.pick(req.body, 'email', 'password');
db.user.authenticate(body).then((user) => {
res.json(user.toPublicJSON());
}, () => {
res.status(401).send();
});
})
错误:db.user.authenticate不起作用。
我认为我可以在user.js返回变量User后使用函数authenticate。请告诉我如何解决这个问题。谢谢大家。
答案 0 :(得分:1)
问题不在于sequelize
。而是在返回后定义方法,因此永远不会到达负责创建方法的代码。
return User;
// Class methods
User.prototype.toPublicJSON = function() {
var json = this.toJSON();
return _.pick(json, 'id', 'email', 'createdAt', 'updatedAt');
};
User.authenticate = (body) => {
您应该在箭头函数末尾移动return User
语句,代码应该有效。