Sequelize 关联错误无法读取未定义的属性 'getTableName'

Question

我运行遇到一个问题，当我尝试将 table 关联到我的查询时 Unhandled rejection TypeError: Cannot read property 'getTableName' of undefined 收到一条错误消息。我在 table 之间有一对一的关系，我不确定这是否导致了错误，或者它是否在我关联两个 table 的其他地方。

这是我的查询：

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',{
                user: req.user,
                organization: organization,
                discoverySource: discoverySource
            });
        })

    })

这里是 models.DiscoverySource 模型：

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;
}

这是我的 models.Organization 模型：

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.belongsToMany(db.User, { through: 'member', foreignKey: 'user_id' });
        },
    }
});
    return Organization;
}

Answer 1

您需要将查询重写为：

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

根据 Sequelize 文档：

[options.attributes] - A list of the attributes that you want to select, or an object with include and exclude keys.

[options.include[].attributes] - A list of attributes to select from the child model.

[options.include[].through.where] - Filter on the join model for belongsToMany relations.

[options.include[].through.attributes] - A list of attributes to select from the join model for belongsToMany relations.

因此，[options.include[].through]只能用于Belongs-To-Many关联，而不是Belong-To用于DiscoverySource和Organization模型。

Answer 2

我遇到了同样的问题。我的续集版本 5.22.3。如果您使用相同的版本，请对您的查询进行以下更改：

models.DiscoverySource.findAll({
    attributes: ['discoverySource'],
    where: { 
        organizationId: req.user.organizationId
    },
    include: {
        model: models.Organization,
        //rest of the code, if any
    }
})

include 不再需要是数组。

Answer 3

在我的例子中删除

through: { attributes: [] }

解决了问题。

Sequelize 关联错误无法读取未定义的属性 'getTableName'

Sequelize Association Error Cannot read property 'getTableName' of undefined

node.js

sequelize.js

Sequelize 关联错误无法读取未定义的 属性 'getTableName'

Sequelize Association Error Cannot read property 'getTableName' of undefined

node.js

sequelize.js

Sequelize 关联错误无法读取未定义的属性 'getTableName'