SequelizeJS無法讀取未定義的屬性'getTableName'

我遇到了一個問題，我試圖關聯兩個具有一對多關係的模型。由於某種原因，儘管引用關係，但這個查詢仍然引發錯誤。SequelizeJS無法讀取未定義的屬性'getTableName'

這是我的錯誤信息：

Unhandled rejection TypeError: Cannot read property 'getTableName' of undefined 
    at generateJoinQueries (/Users/user/Desktop/Projects/node/project/node_modules/sequelize/lib/dialects/abstract/query-generator.js:1181:43)

這是路線：

appRoutes.route('/settings') 

    .get(function(req, res, organization){ 
     models.DiscoverySource.findAll({ 
      where: { 
       organizationId: req.user.organizationId 
      }, 
      include: [{ 
       model: models.Organization, through: { attributes: ['organizationName', 'admin', 'discoverySource']} 
      }] 
     }).then(function(organization, discoverySource){ 
      res.render('pages/app/settings.hbs',{ 
       organization: organization, 
       discoverySource: discoverySource 
      }); 
     }) 

    });

DiscoverySource：

module.exports = function(sequelize, DataTypes) { 

var DiscoverySource = sequelize.define('discovery_source', { 
    discoverySourceId: { 
     type: DataTypes.INTEGER, 
     field: 'discovery_source_id', 
     autoIncrement: true, 
     primaryKey: true 
    }, 
    discoverySource: { 
     type: DataTypes.STRING, 
     field: 'discovery_source_name' 
    }, 
    organizationId: { 
     type: DataTypes.TEXT, 
     field: 'organization_id' 
    }, 
},{ 
    freezeTableName: true, 
    classMethods: { 
     associate: function(db) { 
      DiscoverySource.belongsTo(db.Organization, {foreignKey: 'organization_id'}); 
     }, 
    }, 
}); 
    return DiscoverySource; 
}

組織：

module.exports = function(sequelize, DataTypes) { 

var Organization = sequelize.define('organization', { 
    organizationId: { 
     type: DataTypes.INTEGER, 
     field: 'organization_id', 
     autoIncrement: true, 
     primaryKey: true 
    }, 
    organizationName: { 
     type: DataTypes.STRING, 
     field: 'organization_name' 
    }, 
    admin: DataTypes.STRING 
},{ 
    freezeTableName: true, 
    classMethods: { 
     associate: function(db) { 
      Organization.hasMany(db.DiscoverySource, {foreignKey: 'organization_id'}); 
     }, 
    } 
}); 
    return Organization; 
}

來源

2016-03-21 cphill

[Sequelize關聯錯誤的可能重複無法讀取未定義屬性'getTableName']（http://stackoverflow.com/questions/35974514/sequelize-association-error-cannot-read-property-gettablename-of-undefined） – Milkncookiez

看來，這是Sequelize Association Error Cannot read property 'getTableName' of undefined的副本。

但是，你需要重寫查詢看起來像：

models.DiscoverySource.findAll({ 
    attributes: ['discoverySource'], 
    where: { 
     organizationId: req.user.organizationId 
    }, 
    include: [{ 
     model: models.Organization, 
     attributes: ['organizationName', 'admin'] 
    }] 
})

按照Sequelize文檔：

[options.attributes] - 要在屬性列表選擇或包含包含和排除鍵的對象。

[options.include []。attributes] - 要從子模型中選擇的屬性列表。

[options.include []。through.where] - 在連接模型上過濾belongsToMany關係。

[options.include []。through.attributes] - 從連接模型中爲belongsToMany關係選擇的屬性列表。

所以，[options.include[].through]只能在Belongs-To-Many關聯，而不是Belong-To爲DiscoverySource和Organization模型使用你的情況下使用。

來源

2016-07-07 16:42:58

SequelizeJS無法讀取未定義的屬性'getTableName'

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