User.create不是函数(Sequelize错误)

Question

我使用sequelize-cli成功地创建了迁移，但现在当我试图在poster中发出请求时，我收到了错误：

User.create is not a function 

我不知道我的应用程序模型出了什么问题，我还尝试将页面上的导入更改为

const { Customer } = require('../../models/customer');

而不是

const Customer = require('../../models/customer');

但在这种情况下，我得到错误

TypeError: Cannot read properties of undefined (reading 'create')

这里是客户型号

'use strict';
const {
Model
} = require('sequelize');
module.exports = (sequelize, DataTypes) => {
class Customer extends Model {
/**
* Helper method for defining associations.
* This method is not a part of Sequelize lifecycle.
* The `models/index` file will call this method automatically.
*/
static associate(models) {
// define association here
}
}
Customer.init({
name: DataTypes.STRING,
email: DataTypes.STRING,
password: DataTypes.STRING,
country: DataTypes.STRING,
city: DataTypes.STRING,
state: DataTypes.STRING,
address: DataTypes.STRING,
postalCode: DataTypes.STRING
}, {
sequelize,
modelName: 'Customer',
});
return Customer;
};

索引模型

'use strict';
const fs = require('fs');
const path = require('path');
const Sequelize = require('sequelize');
const basename = path.basename(__filename);
const env = process.env.NODE_ENV || 'development';
const config = require(__dirname + '/../config/config.json')[env];
const db = {};
let sequelize;
if (config.use_env_variable) {
sequelize = new Sequelize(process.env[config.use_env_variable], config);
} else {
sequelize = new Sequelize(config.database, config.username, config.password, config);
}
fs
.readdirSync(__dirname)
.filter(file => {
return (file.indexOf('.') !== 0) && (file !== basename) && (file.slice(-3) === '.js');
})
.forEach(file => {
const model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes);
db[model.name] = model;
});
Object.keys(db).forEach(modelName => {
if (db[modelName].associate) {
db[modelName].associate(db);
}
});
db.sequelize = sequelize;
db.Sequelize = Sequelize;
module.exports = db;

控制器

const {Customer} = require('../../models/customer');
module.exports = {
async store (req, res) {
try {
const { name, email, password, country, city, state, address, postalCode } = req.body;
const customer = await Customer.create({ name, email, password, country, city, state, address, postalCode });

return res.status(200).json(customer);
} catch (err) {
return console.log(err);
}
}
}

Answer 1

此导入

const Customer = require('../../models/customer');

只是一个注册CCD_ 1模型的函数。您已经在index模块中注册了所有型号。您只需要从index模块使用它们：

const db = require('../../models/index');
module.exports = {
async store (req, res) {
try {
const { name, email, password, country, city, state, address, postalCode } = req.body;
const customer = await db.Customer.create({ name, email, password, country, city, state, address, postalCode });

return res.status(200).json(customer);
} catch (err) {
return console.log(err);
}
}
}