Question

亲爱的朋友们遇到了问题，因为包括联接表并抛出另一个表，然后我立即将其包括在内

如果我通过（提供商）访问（用户）表，（用户）表应返回提供商名称

如果错误地包含（用户）表，则意味着获得客户名称

但是我收到以下错误

ER_NONUNIQ_TABLE：不是唯一的表/别名：'Provider.User'

代码：

models.Order.findOne({

        where: {

            id: req.params.id



        },attributes: ['orderStatus','id','serviceId','providerId','orderDescription',"orderScheduledDate",'userLat','userLng','createdAt'],
        include: [
            {
                model: models.Provider,
                attributes: ['id','userId'],
                include : [{

                    model : models.User,
                    attributes: ['firstName','lastName','phoneNumber']

                },{


                    model : models.User,
                    attributes: ['phoneNumber']
                }]
            }
        ]
    })

Answer 1

如果要两次包含相同的模型，则需要为关系/关联分配别名：

Provider.belongsTo/haveMany/any...(User, {as: 'ProviderUser'}); //<------ HERE
Provider.belongsTo/haveMany/any...(User, {as: 'User'}); //<------ HERE

include: [{
    model: models.Provider,
    attributes: ['id', 'userId'],
    include: [{
        model: models.User,
        as : 'User' //<---------- HERE
        attributes: ['firstName', 'lastName', 'phoneNumber']
    }, {
        model: models.User,
        as : 'ProviderUser' //<---------- HERE
        attributes: ['phoneNumber']
    }]
}]

sequelize不是唯一的表/别名

1 个答案: