Sequelize - 如何在模型定义期间定义 ON DELETE 操作答案

【问题标题】：Sequelize - How to define ON DELETE action during model definitionSequelize - 如何在模型定义期间定义 ON DELETE 操作
【发布时间】：2020-10-05 19:05:50
【问题描述】：

我想问你是否可以在定义 Sequelize 模型时设置 ON DELETE 动作，例如：

sequelize.define('oAuthAccessTokens', {
    id: {
        type: Sequelize.INTEGER,
        primaryKey: true,
        autoIncrement: true
    },
    createdAt: Sequelize.DATE,
    updatedAt: Sequelize.DATE,
    accessToken: { type: Sequelize.STRING(256), allowNull: false },
    expires: { type: Sequelize.DATE, allowNull: false },
    scope: Sequelize.STRING(255),
    clientId: {
        type: Sequelize.STRING(80),
        allowNull: false,
        references: {
            model: 'oAuthClients',
            key: "clientId",
            **onDelete: "cascade"** // here is my try
        }
    },
    userId: {
        type: Sequelize.INTEGER,
        allowNull: false,
        references: {
            model: 'oAuthUsers',
            key: "id",
            **onDelete: "cascade"** // here is my try
        }
    }
});

我知道可以将适当的选项传递给hasOne() 方法，但是这样的模型定义呢？希望有官方文档中没有提到的方式。

更新

问题现在解决了。 onDelete 属性应该在references 之外。

sequelize.define('oAuthAccessTokens', {
    id: {
        type: Sequelize.INTEGER,
        primaryKey: true,
        autoIncrement: true
    },
    createdAt: Sequelize.DATE,
    updatedAt: Sequelize.DATE,
    accessToken: { type: Sequelize.STRING(256), allowNull: false },
    expires: { type: Sequelize.DATE, allowNull: false },
    scope: Sequelize.STRING(255),
    clientId: {
        type: Sequelize.STRING(80),
        allowNull: false,
        onDelete: "cascade",
        references: {
            model: 'oAuthClients',
            key: "clientId",
        }
    },
    userId: {
        type: Sequelize.INTEGER,
        onDelete: "cascade",
        allowNull: false,
        references: {
            model: 'oAuthUsers',
            key: "id"
        }
    }
});

【问题讨论】：

标签： node.js sequelize.js

【解决方案1】：

问题现在解决了。 onDelete 属性应该在references 之外。

sequelize.define('oAuthAccessTokens', {
    id: {
        type: Sequelize.INTEGER,
        primaryKey: true,
        autoIncrement: true
    },
    createdAt: Sequelize.DATE,
    updatedAt: Sequelize.DATE,
    accessToken: { type: Sequelize.STRING(256), allowNull: false },
    expires: { type: Sequelize.DATE, allowNull: false },
    scope: Sequelize.STRING(255),
    clientId: {
        type: Sequelize.STRING(80),
        allowNull: false,
        onDelete: "cascade",
        references: {
            model: 'oAuthClients',
            key: "clientId",
        }
    },
    userId: {
        type: Sequelize.INTEGER,
        onDelete: "cascade",
        allowNull: false,
        references: {
            model: 'oAuthUsers',
            key: "id"
        }
    }
});

【讨论】：