sequelize.js - Sequelize use camel case in JS but underscores in table names

Question

Is it possible to have column names be underscored (postgres) but have the JavaScript getters be camelCase per language standards?

Answer 1

对于以后发现这一点的任何人，现在都可以明确定义数据库字段的名称：

var User = sequelize.define('user', {
  isAdmin: {
    type: DataTypes.BOOLEAN,
    field: 'is_admin'
  }
});

Answer 2

2019+

在 Sequelize v5 中，您现在可以使用该underscored: true属性

---

const User = sequelize.define('User', {
    username: DataTypes.STRING,
    password: DataTypes.STRING
  }, {underscored: true});

https://sequelize.org/master/class/lib/model.js~Model.html#static-method-init

Answer 3

不直接在您的列定义中，但您可以查看 getter 和 setter：

http://sequelizejs.com/documentation#models-getters---setters-defining-as-part-of-the-model-options

尽管此选项要求您手动为每列定义 getter 和 setter，但它不能自动化。此外，您的 getter 和实际的列名都将在对象上可用。

我认为 github 上的此功能存在问题，但我现在找不到

---

实际链接 https://sequelize.org/master/manual/models-definition.html#getters--amp--setters

Answer 4

您可以使用更新版本的 Sequelize 为模型（表）和键（字段）实现此目的。

我正在使用 4.29.2，我的模型如下所示：

const Post = sequelize.define('post', {
    id: {
      type: DataTypes.UUID,
      defaultValue: DataTypes.UUIDV4,
      primaryKey: true,
      allowNull: false,
    },
    isActive: {
      type: DataTypes.BOOLEAN,
      defaultValue: true,
      allowNull: false,
      field: 'is_active',
    },
    isDeleted: {
      type: DataTypes.BOOLEAN,
      defaultValue: false,
      allowNull: false,
      field: 'is_deleted',
    },
  }, {
    indexes: [
      {
        unique: false,
        fields: ['is_active'],
      },
      {
        unique: false,
        fields: ['is_deleted'],
      },
    ],
    defaultScope: {
      where: {
        isActive: true,
        isDeleted: false,
      },
    },
  });

const PostComments = sequelize.define('postComments', {
    id: {
      type: DataTypes.UUID,
      defaultValue: DataTypes.UUIDV4,
      primaryKey: true,
      allowNull: false,
    },
    postId: {
      type: DataTypes.UUID,
      allowNull: false,
      field: 'post_id',
    },
    comment: {
      type: DataTypes.STRING,
      allowNull: false,
    },
  }, {
    tableName: 'post_comments',
    indexes: [
      {
        unique: false,
        fields: ['post_id'],
      },
    ],
  });


  Post.hasMany(PostComments, {
    foreignKey: 'postId',
    constraints: true,
    as: 'comments',
  });

  PostComments.belongsTo(Post, {
    foreignKey: 'postId',
    constraints: true,
    as: 'post',
  });

如您所见，我正在设置模型（表）的tableName值和键（字段）的字段值。

当我运行时：

sequelize.query('SET FOREIGN_KEY_CHECKS = 0', { raw: true })
  .then(() => {
    conn.sync({ force: true }).then(() => {
      console.log('DONE');
    });
  });

结果是：

Executing (default): SET FOREIGN_KEY_CHECKS = 0
Executing (default): DROP TABLE IF EXISTS `post_comments`;
Executing (default): DROP TABLE IF EXISTS `post`;
Executing (default): CREATE TABLE IF NOT EXISTS `post` (`id` CHAR(36) BINARY NOT NULL , `is_active` TINYINT(1) NOT NULL DEFAULT true, `is_deleted` TINYINT(1) NOT NULL DEFAULT false, `created_at` DATETIME NOT NULL, `updated_at` DATETIME NOT NULL, PRIMARY KEY (`id`) ENGINE=InnoDB;
Executing (default): CREATE TABLE IF NOT EXISTS `post_comments` (`id` CHAR(36) BINARY NOT NULL , `post_id` CHAR(36) BINARY NOT NULL, `comment` VARCHAR(255) NOT NULL, `created_at` DATETIME NOT NULL, `updated_at` DATETIME NOT NULL, PRIMARY KEY (`id`), FOREIGN KEY (`post_id`) REFERENCES `post` (`id`) ON DELETE CASCADE ON UPDATE CASCADE) ENGINE=InnoDB;