javascript - Sequelize : Cannot set a new unique constraint message

Question

我正在尝试为字段 username 和 email 设置违反唯一约束的验证消息。但是，无论何时输入已使用的用户名，它都会显示为 email 属性定义的消息，但会显示 username 属性的输入，并且还表示此输入用于用户名 属性。我将如何解决这个问题？这是我的代码:

module.exports = function (sequelize, DataTypes) {
    var users = sequelize.define('users', {
        full_name: {
            type: DataTypes.STRING,
            allowNull: false,
            validate: {
                len: {
                    args: [5, 50],
                    msg: 'Your full name may be 5 to 50 characters only.'
                }
            }
        },
        email: {
            type: DataTypes.STRING,
            allowNull: false,
            unique: {
                msg: 'This email is already taken.'
            },
            validate: {
                isEmail: {
                    msg: 'Email address must be valid.'
                }
            }
        },
        username: {
            type: DataTypes.STRING,
            allowNull: false,
            unique: {
                msg: 'This username is already taken.'
            },
            validate: {
                len: {
                    args: [5, 50],
                    msg: 'Your username may be 5 to 50 characters only.'
                }
            }
        },
        password: {
            type: DataTypes.STRING,
            allowNull: false,
            validate: {
                len: {
                    args: [5, 72],
                    msg: 'Your password may be 5 to 72 characters only.'
                }
            }
        },
        rank: {
            type: DataTypes.INTEGER,
            allowNull: false,
            validate: {
                isInt: true
            }
        }
    }, {
        hooks: {
            beforeValidate: function (user, options) {
                if (typeof user.email === 'string') {
                    user.email = user.email.toLowerCase();
                }

                if (typeof user.username === 'string') {
                    user.username = user.username.toLowerCase();
                }
            }
        }
    });

    return users;
};

这是我从输入中得到的输出:

{
  "name": "SequelizeUniqueConstraintError",
  "message": "Validation error",
  "errors": [
    {
      "message": "This email is already taken.",
      "type": "unique violation",
      "path": "username",
      "value": "hassan"
    }
  ],
  "fields": {
    "username": "hassan"
  }
}

如您所见，它表示用户名不是唯一的，而是使用为电子邮件属性定义的消息。

Answer 1

这是可能的尝试这样

unique: {
    arg: true,
    msg: 'This username is already taken.'
},