Migrate the simple-Todo nodejs implementation version to the couchdb Database

This is Suqian Daniel's simple-Todo nodejs implementation version: http://cnodejs.org/topic/4f16442ccae1f4aa270010d5

Recently he switched the database to MongoDB, the deployment method can refer to here: http://blog.csdn.net/kunshan_shenbin/article/details/7725415

Since couchdb has been being studied in the recent stage, we have also implemented couchdb. The Code is fully implemented based on the simple-Todo nodejs mentioned above.

The procedure is as follows:

1. Download the simple-Todo nodejs implementation version to your local device.

Git clone https://github.com/fengmk2/todo.git

2. Install the couchdb driver plug-in cradle

Go to the todo directory and run NPM install cradle.

3. You only need to slightly modify the code.

Add the following three settings to config. JS:

exports.db_port = 5984;exports.db_url = 'http://localhost';exports.db_name = 'todo_dev';

Modify common/DB. js as follows:

"use strict";/** * Module dependencies. */var cradle = require('cradle');var config = require('../config');var connection = new(cradle.Connection)(config.db_port, config.db_port, {cache: true,raw: false});var db = connection.database(config.db_name);db.exists(function (err, exists) {if (err) {console.log('error', err);} else if (exists) {console.log('database exists, please enjoy.');} else {console.log('database does not exist, create a new one.');db.create(function() {db.save('_design/todo', {views: {all: {map: 'function (doc) { emit(doc._id, doc) }'}    }});});}});module.exports = db;

Controllers/todo. js needs to be changed to the couchdb operation through cradle in the Database Operations Section.

"Use strict";/*** module dependencies. */var Config = require ('.. /config '); var DB = require ('.. /common/db'); exports. index = function (req, res, next) {dB. view ('todo/all', function (ERR, result) {If (ERR) {return next (ERR);} var DATA = new array (); result. foreach (function (ROW) returns data.push(row={}}res.render('index.html ', {todos: Data}) ;}; exports. new = function (req, res, next) {var Title = req. bo Dy. Title | ''; Title = title. Trim (); If (! Title) {return res.render('error.html ', {message: 'title is required'});} dB. save ({Title: title, post_date: new date ()}, function (ERR, result) {If (ERR) {return next (ERR);} res. redirect ('/') ;};}; exports. view = function (req, res, next) {res. redirect ('/');}; exports. edit = function (req, res, next) {var id = req. params. ID; dB. get (ID, function (ERR, DOC) {If (ERR) {return next (ERR);} If (! Doc) {return next ();} res. render ('todo/edit.html ', {todo: Doc}) ;}; exports. save = function (req, res, next) {var id = req. params. ID; var Title = req. body. title | ''; Title = title. trim (); If (! Title) {return res.render('error.html ', {message: 'title is required'});} dB. merge (ID, {Title: Title}, function (ERR, result) {If (ERR) {return next (ERR);} res. redirect ('/') ;};}; exports. delete = function (req, res, next) {var id = req. params. ID; dB. get (ID, function (ERR, DOC) {var REV = Doc. _ Rev; dB. remove (ID, Rev, function (ERR, result) {If (ERR) {return next (ERR);} res. redirect ('/') ;}) ;};}; ex Ports. Finish = function (req, res, next) {var finished = Req. query. Status = 'yes '? 1: 0; var id = req. params. ID; dB. merge (ID, {finished: Finished}, function (ERR, result) {If (ERR) {return next (ERR);} res. redirect ('/');});};

After that, start the operation.