Question

我正在使用sequelize CLI生成和运行数据库迁移。我遇到的问题是将id字段设置为数据类型Sequelize.UUID在mysql中显示为自动递增整数。这是我的用户模型和迁移：

用户模型

    'use strict';
    module.exports = (sequelize, DataTypes) => {
      const User = sequelize.define('User', {
        UserName: {type:DataTypes.STRING,unique:true,allowNull:false},
        FirstName:{type: DataTypes.STRING,allowNull:true},
        LastName: {type:DataTypes.STRING,allowNull:true},
        Email: {type:DataTypes.STRING,allowNull:false,unique:true,validate: { isEmail: {msg: "Invalid Email"} }},
        Password: {type:DataTypes.STRING,allowNull:false},
        Avatar: {type:DataTypes.STRING,allowNull:true},

      }, {});
      User.associate = function(models) {

        User.hasMany(models.RoleUser,
            {
                foreignKey:'UserId',
                as:'userroles',
                sourceKey:'id'
            }),

        User.belongsTo(models.Country,
            {
                foreignKey:'CountryId',
                targetKey:'id'
            }),

            User.belongsToMany(models.Role,
                {
            through: 'RoleUser',
            foreignkey:'UserId'

        })


     };
      return User;
    };

**User Migration file:**

'use strict';
const uuidv4 = require('uuid/v4');

module.exports = {
  up: (queryInterface, Sequelize) => {
    return queryInterface.createTable('Users', {
      id: {
        allowNull: false,
        primaryKey: true,
        type: Sequelize.UUID
        defaultValue:uuidv4()
      },
      UserName: {
        type: Sequelize.STRING
      },
      FirstName: {
        type: Sequelize.STRING
      },
      LastName: {
        type: Sequelize.STRING
      },
      Email: {
        type: Sequelize.STRING
      },
      Password: {
        type: Sequelize.STRING
      },
      Avatar: {
        type: Sequelize.STRING
      },

      createdAt: {
        allowNull: false,
        type: Sequelize.DATE
      },
      updatedAt: {
        allowNull: false,
        type: Sequelize.DATE
      }
    });
  },
  down: (queryInterface, Sequelize) => {
    return queryInterface.dropTable('Users');
  }
};

迁移后，其字段已转换为MYSQL中的自动增量：

id: {
            allowNull: false,
            primaryKey: true,
            type: Sequelize.UUID
            defaultValue:uuidv4()
          },

关于为什么发生这种情况的任何指针？请协助。因为外键是Sequelize.UUID

类型，所以甚至连这些关联似乎都没有形成。

Answer 1

我通过在主键属性设置为true的模型上添加id字段来解决此问题。

 id: {
type:DataTypes.UUID,
allowNull:false,
unique:true,
primaryKey:true
},

如果模型没有主键设置为true的字段，则sequelize会自动生成INTEGER AUTOINCREAMENT类型的id字段。

Sequelize迁移将MYSQL中的Sequelize.UUID主键字段转换为整数自动增量

1 个答案: