在Sails.js中，默认使用的是本地的一个数据库localDiskDb，我们在项目中如果想使用数据库MongoDB的话，需要自己手动配置，首先是config/connections.js文件，我们需要将我们想使用的数据库通过配置文件添加进去。入红字部分
- /**
- * Connections
- * (sails.config.connections)
- *
- * `Connections` are like "saved settings" for your adapters. What's the difference between
- * a connection and an adapter, you might ask? An adapter (e.g. `sails-mysql`) is generic--
- * it needs some additional information to work (e.g. your database host, password, user, etc.)
- * A `connection` is that additional information.
- *
- * Each model must have a `connection` property (a string) which is references the name of one
- * of these connections. If it doesn't, the default `connection` configured in `config/models.js`
- * will be applied. Of course, a connection can (and usually is) shared by multiple models.
- * .
- * Note: If you're using version control, you should put your passwords/api keys
- * in `config/local.js`, environment variables, or use another strategy.
- * (this is to prevent you inadvertently sensitive credentials up to your repository.)
- *
- * For more information on configuration, check out:
- * http://sailsjs.org/#!/documentation/reference/sails.config/sails.config.connections.html
- */
-
- module.exports.connections = {
-
- /***************************************************************************
- * *
- * Local disk storage for DEVELOPMENT ONLY *
- * *
- * Installed by default. *
- * *
- ***************************************************************************/
- localDiskDb: {
- adapter: 'sails-disk'
- },
-
- /***************************************************************************
- * *
- * MySQL is the world's most popular relational database. *
- * http://en.wikipedia.org/wiki/MySQL *
- * *
- * Run: npm install sails-mysql *
- * *
- ***************************************************************************/
- someMysqlServer: {
- adapter: 'sails-mysql',
- host: 'YOUR_MYSQL_SERVER_HOSTNAME_OR_IP_ADDRESS',
- user: 'YOUR_MYSQL_USER',
- password: 'YOUR_MYSQL_PASSWORD',
- database: 'YOUR_MYSQL_DB'
- },
-
- /***************************************************************************
- * *
- * MongoDB is the leading NoSQL database. *
- * http://en.wikipedia.org/wiki/MongoDB *
- * *
- * Run: npm install sails-mongo *
- * *
- ***************************************************************************/
- MongodbServer: {
- adapter: 'sails-mongo',
- host: 'localhost',
- port: 27017,
- // user: 'username',
- // password: 'password',
- database: 'catgood'
- },
-
- /***************************************************************************
- * *
- * PostgreSQL is another officially supported relational database. *
- * http://en.wikipedia.org/wiki/PostgreSQL *
- * *
- * Run: npm install sails-postgresql *
- * *
- * *
- ***************************************************************************/
- somePostgresqlServer: {
- adapter: 'sails-postgresql',
- host: 'YOUR_POSTGRES_SERVER_HOSTNAME_OR_IP_ADDRESS',
- user: 'YOUR_POSTGRES_USER',
- password: 'YOUR_POSTGRES_PASSWORD',
- database: 'YOUR_POSTGRES_DB'
- }
-
-
- /***************************************************************************
- * *
- * More adapters: https://github.com/balderdashy/sails *
- * *
- ***************************************************************************/
-
- };
到这里，数据库并没有切换，我们还需要设置config/models.js
- /**
- * Default model configuration
- * (sails.config.models)
- *
- * Unless you override them, the following properties will be included
- * in each of your models.
- *
- * For more info on Sails models, see:
- * http://sailsjs.org/#!/documentation/concepts/ORM
- */
-
- module.exports.models = {
-
- /***************************************************************************
- * *
- * Your app's default connection. i.e. the name of one of your app's *
- * connections (see `config/connections.js`) *
- * *
- ***************************************************************************/
- connection: 'MongodbServer',
-
- /***************************************************************************
- * *
- * How and whether Sails will attempt to automatically rebuild the *
- * tables/collections/etc. in your schema. *
- * *
- * See http://sailsjs.org/#!/documentation/concepts/ORM/model-settings.html *
- * *
- ***************************************************************************/
- migrate: 'safe'
-
- };
其中的connection后面的字段就是connection.js中配置的MongoDB的名称，然后migrate这里我们使用safe模式，其实这里有三种模式可以选择，如果注释掉这一行，启动sails lift的时候会提示。
到这里我们配置文件已经配置了，需要用npm来添加支持组件了。
- npm install sails-mongo
到此为止，MongoDB的安装就完成了。