序列化CLI找不到环境变量

Question

我正在尝试使用Sequelize CLI工具运行数据库迁移，但是遇到一个问题，该工具未处理我的ENV变量。在github存储库中，它说在版本2.0.0（我在2.4.0中）中，您可以config/config.js像这样直接访问ENV变量process.env.DB_HOSTNAME，但是我收到一条错误消息，指示未传递任何值来自变量

错误：

Unable to connect to database: SequelizeAccessDeniedError: ER_ACCESS_DENIED_ERROR: Access denied for user ''@'localhost' (using password: NO)

config.js：

module.exports = {
    "development": {
        "username": process.env.LOCAL_USERNAME,
        "password": process.env.LOCAL_PASSWORD,
        "database": process.env.LOCAL_DATABASE,
        "host": "127.0.0.1",
        "dialect": "mysql",
        "migrationStorageTableName": "sequelize_meta"
    },
}

.env：

LOCAL_DATABASE="db_name"
LOCAL_USERNAME="root"
LOCAL_PASSWORD="test"

Answer 1

您忘记了要求dotenv模块：

require('dotenv').config();  // this line is important!
module.exports = {
"development": {
    "username": process.env.LOCAL_USERNAME,
    "password": process.env.LOCAL_PASSWORD,
    "database": process.env.LOCAL_DATABASE,
    "host": "127.0.0.1",
    "dialect": "mysql",
    "migrationStorageTableName": "sequelize_meta"
},
}