Sequelize 迁移失败，无法读取未定义的属性“toString”[关闭]答案

【问题标题】：Sequelize migration fails by cannot read property 'toString' of undefined [closed]Sequelize 迁移失败，无法读取未定义的属性“toString”[关闭]
【发布时间】：2018-02-12 13:08:13
【问题描述】：

尝试在 Sequelize 上运行迁移时，我收到以下错误；

== 20170904085107-kognitio-queue: migrating =======
TypeError: Cannot read property 'toString' of undefined
    at Object.attributeToSQL (/home/vagrant/insights-api/node_modules/sequelize/lib/dialects/mysql/query-generator.js:240:34)
    at Object.attributesToSQL (/home/vagrant/insights-api/node_modules/sequelize/lib/dialects/mysql/query-generator.js:306:45)
    at QueryInterface.createTable (/home/vagrant/insights-api/node_modules/sequelize/lib/query-interface.js:171:38)
    at Object.up (/home/vagrant/insights-api/lib/migrations/20170904085107-kognitio-queue.js:4:31)
    at constructor._exec (/home/vagrant/insights-api/node_modules/umzug/lib/migration.js:104:23)
    at constructor.up (/home/vagrant/insights-api/node_modules/umzug/lib/migration.js:69:17)
    at constructor.<anonymous> (/home/vagrant/insights-api/node_modules/umzug/index.js:124:28)
    at PassThroughHandlerContext.finallyHandler (/home/vagrant/insights-api/node_modules/bluebird/js/release/finally.js:57:23)
    at PassThroughHandlerContext.tryCatcher (/home/vagrant/insights-api/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/home/vagrant/insights-api/node_modules/bluebird/js/release/promise.js:512:31)
    at Promise._settlePromise (/home/vagrant/insights-api/node_modules/bluebird/js/release/promise.js:569:18)
    at Promise._settlePromise0 (/home/vagrant/insights-api/node_modules/bluebird/js/release/promise.js:614:10)
    at Promise._settlePromises (/home/vagrant/insights-api/node_modules/bluebird/js/release/promise.js:693:18)
    at Promise._fulfill (/home/vagrant/insights-api/node_modules/bluebird/js/release/promise.js:638:18)
    at Promise._resolveCallback (/home/vagrant/insights-api/node_modules/bluebird/js/release/promise.js:432:57)
    at Promise._settlePromiseFromHandler (/home/vagrant/insights-api/node_modules/bluebird/js/release/promise.js:524:17)

迁移文件如下；

'use strict';
module.exports = {
    up: function(queryInterface, Sequelize) {
        return queryInterface.createTable('Kognitio_Queue', {
            queue_id: {
                allowNull: false,
                primaryKey: true,
                type: Sequelize.INTEGER
            },
            queue_user: {
                allowNull: false,
                type: Sequelize.STRING(20)
            },
            queue_query: {
                allowNull: false,
                type: Sequelize.LONG
            },
            queue_added: {
                allowNull: false,
                type: Sequelize.DATETIME,
                defaultValue: Sequelize.NOW
            },
            queue_executed: {
                allowNull: true,
                type: Sequelize.DATETIME
            },
            queue_save_results: {
                allowNull: false,
                type: Sequelize.BOOLEAN
            },
            queue_results_path: {
                allowNull: true,
                type: Sequelize.TEXT
            }
        });
    },
    down: function(queryInterface, Sequelize) {
        return queryInterface.dropTable('Kognitio_Queue');
    }
};

我的模型文件是；

module.exports = (sequelize, DataTypes) => {
    const Kognitio_Queue = sequelize.define('Kognitio_Queue', {
        queue_id: {
            type: DataTypes.INTEGER,
            allowNull: false,
            primaryKey: true,
        },
        queue_user: {
            type: DataTypes.STRING(20),
            allowNull: false
        },
        queue_query: {
            allowNull: false,
            type: DataTypes.LONG
        },
        queue_added: {
            allowNull: false,
            type: DataTypes.DATETIME
        },
        queue_executed: {
            allowNull: true,
            type: DataTypes.DATETIME
        },
        queue_save_results: {
            allowNull: false,
            type: DataTypes.BOOLEAN
        },
        queue_results_path: {
            allowNull: true,
            type: DataTypes.TEXT
        }
    }, {
        underscored: true,
        freezeTableName: true
    });
    return Kognitio_Queue;
};

我不知道什么可能导致此错误发生，因为我已将这些文件与其他成功运行的迁移进行了检查，并且看不到它们之间的差异。我已经清除了整个数据库并重新迁移，但这是唯一一个失败的。

提前致谢。

【问题讨论】：

标签： mysql node.js sequelize.js

【解决方案1】：

发现这是无法识别的数据类型。

【讨论】：

咳咳，续集里的错误捕捉太糟糕了
可以更详细地解释错误。
在某些情况下，错误类型被遗漏。就我而言：我想更新 allowNull 属性，但我错过了类型。希望能解决你的疑惑。
我的情况是，当我想更改列时我错过了类型，然后我通过添加类型来修复它，但是当我想撤消以前用于更改 gosh 的迁移时，我再次收到此错误
我的错误是我试图更改列以允许 null 但根本没有提供类型

【解决方案2】：

确保使用大写数据类型：

使用 DATE 代替 Date 或日期

【讨论】：

谢谢！你救了我！

【解决方案3】：

将DATETIME改为DATE，sequelize中没有名为DATETIME的数据类型。 DATE 与 DATETIME 相同，DATEONLY 与 DATE 相同详情：http://docs.sequelizejs.com/variable/index.html

【讨论】：