Question

我有以下迁移文件：

'use strict';

module.exports = {
    up: (queryInterface, Sequelize) => {
        return queryInterface.sequelize.transaction(t => {
            return queryInterface.addColumn('Vendors', 'status', Sequelize.STRING(30), { transaction: t }).then(() => {
                console.log("Created column..."); // this prints
                return queryInterface.addConstraint('Vendors', ['status'], {
                    type: 'check',
                    name: 'Vendors_status_check',
                    where: {
                        status: ['UNAPPROVED', 'SUBMITTED_FOR_APPROVAL', 'APPROVED', 'SUSPENDED']
                    },
                }, { transaction: t });
            }).catch(err => {
                console.log("Error::", err);
            });
        });
    },

    down: (queryInterface, Sequelize) => {
        return queryInterface.sequelize.transaction(t => {
            // return queryInterface.removeColumn('Vendors', 'status', { transaction: t });
            return queryInterface.removeConstraint('Vendors', 'Vendors_status_check', { transaction: t }).then(() => {
                return queryInterface.removeColumn('Vendors', 'status', { transaction: t });
            });
        })
    }
};

运行sequelize-cli db:migrate时，得到以下输出，然后命令只是“挂起”：永不完成，永不出错：

Sequelize CLI [Node: 12.14.1, CLI: 5.5.1, ORM: 5.21.3]

Loaded configuration file "config\sequelize_config.js".
Using environment "development".
== 20200224080020-vendor-status: migrating =======
Created column...

如果我完全注释掉queryInterface.addConstraint，该命令将完成并将状态列添加到Vendors表中。如果有任何不同，请对PostgresQL运行此迁移。

根据sequelize db:migrate hanging，我尝试添加dialectOptions: {ssl: true}来序列化配置，但除弃用警告外没有其他效果。

更新1

FWIW运行以下代码（即不进行交易）按预期工作：

return queryInterface.addColumn('Vendors', 'status', {type: Sequelize.STRING(30)}/* , { transaction: t } */).then(() => {
    console.log("Created column..."); // this prints
    return queryInterface.addConstraint('Vendors', ['status'], {
        type: 'check',
        name: 'Vendors_status_check',
        where: {
            status: ['UNAPPROVED', 'SUBMITTED_FOR_APPROVAL', 'APPROVED', 'SUSPENDED']
        },
    }/* , { transaction: t } */);
}).catch(err => {
    console.log("Error::", err);
});

Answer 1

addConstraint 不能将事务作为选项。因此，解决方案是不要将对其的调用包装在事务中。

sequelize-cli db：migrate“挂起”，将检查约束添加到新添加的列

更新1

1 个答案: