Question

尝试创建一个非常简单的概念验证来创建与迁移的表关联，但在通过cli运行时无法添加外键 - ./node_modules/.bin/sequelize db:migrate

确保清除我的SequelizeMeta＆amp; SequelizeData表并在运行之前重置所有内容，但仍然会收到错误。

当我删除userId

中的create-company.js字段定义时，迁移运行正常

创建-user.js的

'use strict';
module.exports = {
  up: (queryInterface, Sequelize) => {
    return queryInterface.createTable('users', {
      id: {
        allowNull: false,
        autoIncrement: true,
        primaryKey: true,
        type: Sequelize.INTEGER,
      },
      firstName: {
        type: Sequelize.STRING,
      },
      lastName: {
        type: Sequelize.STRING,
      },
      email: {
        type: Sequelize.STRING,
      },
      createdAt: {
        allowNull: false,
        type: Sequelize.DATE,
        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
      },
      updatedAt: {
        allowNull: false,
        type: Sequelize.DATE,
        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
      },
    });
  },
  down: (queryInterface, Sequelize) => {
    return queryInterface.dropTable('users');
  },
};

创建-company.js

'use strict';
module.exports = {
  up: (queryInterface, Sequelize) => {
    return queryInterface.createTable('companies', {
      id: {
        allowNull: false,
        autoIncrement: true,
        primaryKey: true,
        type: Sequelize.INTEGER,
      },
      name: {
        type: Sequelize.STRING,
      },
      createdAt: {
        allowNull: false,
        type: Sequelize.DATE,
        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
      },
      updatedAt: {
        allowNull: false,
        type: Sequelize.DATE,
        defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
      },
      userId: {
        type: Sequelize.UUID, // have also tried Sequelize.INTEGER
        references: {
          model: 'users',
          key: 'id',
        },
      },
    });
  },
  down: (queryInterface, Sequelize) => {
    return queryInterface.dropTable('companies');
  },
};

您期望发生什么？

在我的companies表

中创建一个外键字段

实际发生了什么？

获取以下输出：

Sequelize CLI [Node: 9.7.1, CLI: 4.0.0, ORM: 4.36.0]

Loaded configuration file "src/database/config.js".
Using environment "dev".
== 20180309004031-create-user: migrating =======
== 20180309004031-create-user: migrated (0.036s)

== 20180316173751-create-company: migrating =======

ERROR: Cannot add foreign key constraint

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! setup1@1.0.0 migrate:dev: `NODE_ENV=dev ./node_modules/.bin/sequelize db:migrate`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the setup1@1.0.0 migrate:dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/shoma/.npm/_logs/2018-03-16T18_22_27_398Z-debug.log

方言： mysql innoDB utf8 方言版本： 5.7.21 Homebrew 数据库版本： 5.7.21 Homebrew Sequelize版本： Sequelize 4.35.2， Sequelize CLI版本： Sequelize-cli 4.0.0 使用最新版本测试：否（如果是，请指定该版本）

Answer 1

引用字段必须是相同类型。但是你有“company.userId：UUID”和“user.id：INTEGER”。

使用关联引用来定义cli迁移会导致错误“错误：无法添加外键约束”

您期望发生什么？

实际发生了什么？

1 个答案: