MongoDB · CoffeeScript Cookbook

## 問題你想與MongoDB數據庫進行交互。 ## Solution ## 方法 ### 使用Node.js ### 安裝 * 如果你的電腦中還沒有的話請先[安裝MongoDB](http://www.mongodb.org/display/DOCS/Quickstart)?。 * [安裝MongoDB原生的模塊](https://github.com/christkv/node-mongodb-native)。 #### 保存記錄 ~~~ mongo = require 'mongodb' server = new mongo.Server "127.0.0.1", 27017, {} client = new mongo.Db 'test', server # save() updates existing records or inserts new ones as needed exampleSave = (dbErr, collection) -> console.log "Unable to access database: #{dbErr}" if dbErr collection.save { _id: "my_favorite_latte", flavor: "honeysuckle" }, (err, docs) -> console.log "Unable to save record: #{err}" if err client.close() client.open (err, database) -> client.collection 'coffeescript_example', exampleSave ~~~ #### 查找記錄 ~~~ mongo = require 'mongodb' server = new mongo.Server "127.0.0.1", 27017, {} client = new mongo.Db 'test', server exampleFind = (dbErr, collection) -> console.log "Unable to access database: #{dbErr}" if dbErr collection.find({ _id: "my_favorite_latte" }).nextObject (err, result) -> if err console.log "Unable to find record: #{err}" else console.log result # => { id: "my_favorite_latte", flavor: "honeysuckle" } client.close() client.open (err, database) -> client.collection 'coffeescript_example', exampleFind ~~~ ### 瀏覽器端一個[基于REST的接口](https://github.com/tdegrunt/mongodb-rest)為此而生。它提供了基于AJAX的訪問方式。 ## 討論本菜譜把_save_和_find_分成了兩個示例，目的是為了把MongoDB獨有的鏈接任務和回調管理方面的擔憂分離。[async](https://github.com/caolan/async)模塊可以幫上忙。