使用 sequelize-cli db:seed，访问 Postgres 时模式被忽略

Question

我正在使用 express.js 构建 Web 服务并使用 Postgres 数据库进行 Sequilize。

数据库在架构 'schema1' 下保存 table 'country'。 Table 'country' 有字段 'name'、'isoCode'。

创建了一个种子文件以在 table 'country' 中插入国家列表。

种子文件看起来像：

'use strict';

module.exports = {
  up: function (queryInterface, Sequelize) {
    return queryInterface.bulkInsert(
        'country', 
        [
          {
            "name":"Afghanistan",
            "isoCode":"AF"
          },
          {
            "name":"Åland Islands",
            "isoCode":"AX"
          },
          {
            "name":"Albania",
            "isoCode":"AL"
          },
          {
            "name":"Algeria",
            "isoCode":"DZ"
          },
          {
            "name":"American Samoa",
            "isoCode":"AS"
          },
          {
            "name":"Andorra",
            "isoCode":"AD"
          }
        ], 
        {
            schema : 'schema1'
        }
    );
  },

  down: function (queryInterface, Sequelize) {

  }
};

虽然运行种子我得到这个错误：

    node_modules/sequelize-cli/bin/sequelize --url postgres://user:password@localhost:5432/database db:seed

    Sequelize [Node: 0.12.6, CLI: 2.0.0, ORM: 3.11.0, pg: ^4.4.2]

    Parsed url postgres://user:*****@localhost:5432/database        
    Starting 'db:seed'...
    Finished 'db:seed' after 165 ms
    == 20151029161319-Countries: migrating =======
    Unhandled rejection SequelizeDatabaseError: relation "country" does not exist
        at Query.formatError (node_modules/sequelize/lib/dialects/postgres/query.js:437:14)
        at null.<anonymous> (node_modules/sequelize/lib/dialects/postgres/query.js:112:19)
        at emit (events.js:107:17)
        at Query.handleError (node_modules/pg/lib/query.js:108:8)
        at null.<anonymous> (node_modules/pg/lib/client.js:171:26)
        at emit (events.js:107:17)
        at Socket.<anonymous> (node_modules/pg/lib/connection.js:109:12)
        at Socket.emit (events.js:107:17)
        at readableAddChunk (_stream_readable.js:163:16)
        at Socket.Readable.push (_stream_readable.js:126:10)
        at TCP.onread (net.js:538:20)

我想我被困在这个问题上了。我将不胜感激任何提供的帮助/指导等。

感谢您的宝贵时间。

Answer 1

我在 Postgres 上执行了 SQL 查询：

     ALTER ROLE <username> SET search_path TO schema1,public;

如此处所述：Permanently Set Postgresql Schema Path

然后，再次执行seeder成功:

    node_modules/sequelize-cli/bin/sequelize --url postgres://user:password@localhost:5432/database db:seed

    Sequelize [Node: 0.12.6, CLI: 2.0.0, ORM: 3.11.0, pg: ^4.4.2]

    Parsed url postgres://user:*****@localhost:5432/database
    Using gulpfile node_modules/sequelize-cli/lib/gulpfile.js
    Starting 'db:seed'...
    Finished 'db:seed' after 558 ms
    == 20151029161319-Countries: migrating =======
    == 20151029161319-Countries: migrated (0.294s)

感谢@a_horse_with_no_name 提供有关 search_path 的信息。我希望 sequelize 库可以处理这种情况，或者我可能误用了它。

更新：在 Github (https://github.com/sequelize/sequelize/issues/4778#issuecomment-152566806) 上开了一张票，解决方法很简单：

不是仅将 table 设置为第一个参数，而是设置

{table名称：'country'，架构：'schema1'}

Answer 2

您实际上可以通过对象指定架构和 table 名称，如 this Github issue:

中所述

'use strict';

module.exports = {
    up: function (queryInterface, Sequelize) {
        return queryInterface.bulkInsert(
            { tableName: 'account', schema: 'crm' },
            {
                name: 'Michael'
            },
            {}
        );
    },

    down: function (queryInterface, Sequelize) {
        return queryInterface.bulkDelete({ tableName: 'account', schema: 'crm' }, null, {});
    }
};

使用 sequelize-cli db:seed，访问 Postgres 时模式被忽略

using sequelize-cli db:seed, schema is ignored when accessing Postgres

postgresql

seeding

express

sequelize.js