DB提供模块、回调
对于我的 NodeJS 项目，我想制作一个简单的模块，为我提供可供使用的数据库句柄。我想到了这样的事情：
settings = module.exports.settings =
db: 'test'
clear_interval: -1
host: '127.0.0.1'
port: '27017'
auto_reconnect: true
{Db, Connection, Server, Collection, BSON, ObjectID} = require 'mongodb'
db = new Db settings.db, new Server settings.host, settings.port, { auto_reconnect: settings.auto_reconnect }
db.open ->
module.exports.db = db
但这真的安全吗？或者是否有其他方法可以确保加载模块时正确设置 module.exports.db ？
编辑在我完成输入之前不小心按了回车键。
For my NodeJS project, I want to make a simple module that will give me the DB handle to work with. I thought of something like this:
settings = module.exports.settings =
db: 'test'
clear_interval: -1
host: '127.0.0.1'
port: '27017'
auto_reconnect: true
{Db, Connection, Server, Collection, BSON, ObjectID} = require 'mongodb'
db = new Db settings.db, new Server settings.host, settings.port, { auto_reconnect: settings.auto_reconnect }
db.open ->
module.exports.db = db
But is this really safe? Or is there an other way to make sure module.exports.db is properly set when the module is loaded?
EDIT Accidentally hit enter before I was done typing.
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那是行不通的。
module.exports.db在需要模块后设置。你应该做的是类似
Force your api to be asynchronous
That won't work.
module.exports.dbis set after the module has been required.What you should do instead is something like
Force your api to be asynchronous