orm2 中文文档 2. 设置 - 飞龙

译者：飞龙

来源：Settings

设置用于储存键值对。设置对象是orm（默认值）上的实例，之后会为每个db连接和每个定义过的Model建立快照。所以orm.settings上的更改只会作用于更改之后建立的连接，而db.settings会作用于更改之后定义的模型。

var orm = require("orm");orm.settings.set("some.deep.value", 123);orm.connect("....", function (err, db) {    // db.settings is a snapshot of the settings at the moment    // of orm.connect(). changes to it don't affect orm.settings    console.log(db.settings.get("some.deep.value")); // 123    console.log(db.settings.get("some.deep"));       // { value: 123 }    db.settings.set("other.value", { some: "object" });    console.log(db.settings.get("other.value"));     // { some: "object" }    console.log(orm.settings.get("other.value"));    // undefined});

默认设置的结构是这样的：

var Settings = {    properties : {        primary_key     : "id",        association_key : "{name}_{field}",        required        : false    },    instance   : {        cache           : true,        cacheSaveCheck  : true,        autoSave        : false,        autoFetch       : false,        autoFetchLimit  : 1,        cascadeRemove   : true,        returnAllErrors : false    },    connection : {        reconnect       : true,        pool: false,        debug           : false    }};