解决sequelize join中的异常错误

Question

我在尝试运行加入 sequelize 时遇到异常错误。错误信息是

SequelizeEagerLoadingError: tblSMS is associated to tblSMSSent using an alias. You've included an alias (tblSMS), but it does not match the alias(es) defined in your association (tblSM).

我创建的连接是这样的：

userDB.tblSMSSent.belongsTo(userDB.tblSMS, { foreignKey: 'MessageId', targetKey: 'OutgoingMessageId' });
    userDB.tblSMS.hasMany(userDB.tblSMSSent, { targetKey: 'OutgoingMessageId' });

    let messages = await userDB.tblSMSSent.findAll({
        attributes: [
            ['phone', 'phone'],
            ['date', 'date'],
            [sequelize.fn('substring', sequelize.col('result'), 1, 50), 'result'],
            ['debtor', 'debtor'],
            ['sms', 'OrigBody'],
            ['user', 'user'],
            ['MessageId', 'MessageId']
        ],
        offset: startVal,
        include: {
            model: userDB.tblSMS,
            as: 'tblSMS',
            attributes: [['MessageBody', 'MessageText']]
        },
        logging: console.log
    })

2 个表的定义是使用 sequelize-auto 创建的，2 个表之间没有对应关系。

tblSMS

const Sequelize = require('sequelize');
module.exports = function(sequelize, DataTypes) {
  return sequelize.define('tblSMS', {
    id: {
      autoIncrement: true,
      type: DataTypes.INTEGER,
      allowNull: false,
      primaryKey: true
    },
    Destination: {
      type: DataTypes.STRING(20),
      allowNull: true
    },
    MessageBody: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    MessageNumber: {
      type: DataTypes.INTEGER,
      allowNull: true
    },
    OutgoingMessageId: {
      type: DataTypes.INTEGER,
      allowNull: true
    },
    PhoneNumber: {
      type: DataTypes.CHAR(20),
      allowNull: true
    },
    ReceivedDate: {
      type: DataTypes.DATE,
      allowNull: true
    },
    Reference: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    exported: {
      type: DataTypes.BOOLEAN,
      allowNull: true,
      defaultValue: false
    },
    Key: {
      type: DataTypes.CHAR(32),
      allowNull: true
    },
    Province: {
      type: DataTypes.CHAR(2),
      allowNull: true
    },
    OrigBody: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    OrigNumber: {
      type: DataTypes.CHAR(20),
      allowNull: true
    },
    OrigCredits: {
      type: DataTypes.INTEGER,
      allowNull: true
    },
    OrigQueueDate: {
      type: DataTypes.DATEONLY,
      allowNull: true
    },
    OrigSendDate: {
      type: DataTypes.DATEONLY,
      allowNull: true
    },
    OrigSent: {
      type: DataTypes.BOOLEAN,
      allowNull: true
    },
    OrigSuccess: {
      type: DataTypes.STRING(50),
      allowNull: true
    },
    AccountKey: {
      type: DataTypes.BLOB,
      allowNull: true
    }
  }, {
    sequelize,
    tableName: 'tblSMS',
    schema: 'dbo',
    timestamps: false,
    indexes: [
      {
        name: "PK_tblSMS",
        unique: true,
        fields: [
          { name: "id" },
        ]
      },
    ]
  });
};

tblSMSSent

const Sequelize = require('sequelize');
module.exports = function(sequelize, DataTypes) {
  return sequelize.define('tblSMSSent', {
    id: {
      type: DataTypes.INTEGER,
      allowNull: false,
      primaryKey: true,
      autoIncrement: true
    },
    user: {
      type: DataTypes.CHAR(10),
      allowNull: false
    },
    phone: {
      type: DataTypes.CHAR(15),
      allowNull: false
    },
    sms: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    date: {
      type: DataTypes.DATE,
      allowNull: false
    },
    result: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    debtor: {
      type: DataTypes.CHAR(20),
      allowNull: false
    },
    exported: {
      type: DataTypes.BOOLEAN,
      allowNull: false,
      defaultValue: false
    },
    messageID: {
      type: DataTypes.CHAR(20),
      allowNull: true
    }
  }, {
    sequelize,
    tableName: 'tblSMSSent',
    schema: 'dbo',
    timestamps: false
  });
};

当我尝试通过扩展定义向 tblSMSSent 添加自定义 getter 方法时出现此错误（我无法开始工作 - 我想在从中检索到的文本之前添加一个“^” tblSMSSent).

此错误的不寻常之处在于，在代码中的任何地方都找不到任何带有简单“tblSM”的文本，因为错误消息报告为使用的别名。

我停止并重新启动了 Node 几次都无济于事。

Answer 1

错误是说你在findAll查询的include部分有一个别名，但是在两个表之间的关联定义中没有对应的别名。尝试只

include: {
    model: userDB.tblSMS,
    attributes: [['MessageBody', 'MessageText']]
},

在 findAll 查询中。这将删除对未定义别名的引用。

此外，行

userDB.tblSMS.hasMany(userDB.tblSMSSent, { targetKey: 'OutgoingMessageId' });

应该改为

userDB.tblSMS.hasMany(userDB.tblSMSSent, { sourceKey: 'OutgoingMessageId' });

因为 OutgoingMessageId 是源模型而不是目标模型的属性。您甚至可以将 foreignKey 属性添加到 hasMany 关联中，这样

userDB.tblSMS.hasMany(userDB.tblSMSSent, {
        sourceKey: 'OutgoingMessageId',
        foreignKey: 'MessageId'
    });

解决sequelize join中的异常错误

Solve an unusual error in a sequelize join

node.js

sequelize.js