node. JS Blog Instance (i) Simple blog

The first chapter of the original tutorial https://github.com/nswbmw/N-blog/wiki/_pages. Because of the version number and other reasons, in the original tutorial based on a slight modification can be achieved.

Environment:

Win7 Flagship edition 64-bit

node.js:0.10.31

mongodb:2.6.4

express:3.x

Effect: User interface:
Login interface:

watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvzg9uz3noyw9zahvhaq==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma== /dissolve/70/gravity/southeast ">
Login success:

watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvzg9uz3noyw9zahvhaq==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma== /dissolve/70/gravity/southeast ">
Post blog:

watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvzg9uz3noyw9zahvhaq==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma== /dissolve/70/gravity/southeast ">
Publishing success:
Source: blog/
Blog/package.json

{  "name": "blog",  "version": "0.0.1", "  private": True,  "scripts": {    "start": "Node App.js"  } ,  "dependencies": {    "Express": "3.16.7",    "Ejs": "*", "MongoDB": "*", "Connect-mongo": "*", "Connect-flash" :"*"  }}

Blog/app.js

/** * Module dependencies. */var Express = require (' Express '); var routes = require ('./routes '); var http = require (' http '); var path = require (' path '); var mongostore=require (' Connect-mongo ') (Express), Var settings=require ('./settings '), var flash=require (' Connect-flash '); var app = Express ();//All Environmentsapp.set (' Port ', Process.env.PORT | |); app.set (' views ', Path.join (__dirname, ' views ')), App.set (' View engine ', ' Ejs '); App.use (Flash ()); App.use (Express.favicon ()); App.use ( Express.logger (' Dev '); App.use (Express.bodyparser ()); App.use (Express.methodoverride ()); App.use (Express.static ( Path.join (__dirname, ' public ')); App.use (Express.cookieparser ()); App.use (Express.session ({secret: Settings.cookiesecret, Key:settings.db,//cookie name Cookie: {maxage:1000 * * * * * + * 30},//30 days store:new M Ongostore ({db:settings.db})});//This sentence is written in front of the session will be wrong Why Pinch app.use (app.router);//Development Onlyif (' development ' = = A Pp.get (' env ')) {App.use (Express.errorhandler ());} Routes (app); HTTP. Createserver (APP). Listen (App.get (' Port '), function () {console.log (' Express server listening on port ' + app.get (' Port ') ));});

Blog/settings.js

Module.exports={cookiesecret: ' MyBlog ', DB: ' Blog ', Host: ' localhost '};

Blog/models/blog/models/db.js

var settings=require ('.. /settings '), Db=require (' MongoDB '). Db,connection=require (' MongoDB '). Connection,server=require (' MongoDB '). Server;module.exports=new Db (settings.db,new Server (Settings.host,connection.default_port), {safe:true});

Blog/models/post.js

var MongoDB = require ('./db '); function Post (name, title, post) {this.name = name;  This.title = title; This.post = post;}  Module.exports = post;//Stores an article and its related information Post.prototype.save = function (callback) {var date = new Date (); Store a variety of time formats. Convenient later extended var time = {date:date, year:date.getFullYear (), month:date.getFullYear () + "-" + (Date.getmon Th () + 1), day:date.getFullYear () + "-" + (Date.getmonth () + 1) + "-" + date.getdate (), Minute:date.getFullY Ear () + "-" + (Date.getmonth () + 1) + "-" + date.getdate () + "" + date.gethours () + ":" + (Date.getminutes () < 1 2} ' 0 ' + date.getminutes (): Date.getminutes ())}//document to be stored in the database var post = {name:this.name, time:time, TI  Tle:this.title, post:this.post};    Open Database Mongodb.open (function (err, db) {if (err) {return callback (ERR);        }//Read posts Collection db.collection (' posts ', function (err, collection) {if (err) {mongodb.close (); Return Callback (ERR);        }//Insert the document into the Posts collection Collection.insert (post, {safe:true}, function (err) {mongodb.close (); if (ERR) {return callback (ERR);//Failed!    Returns ERR} callback (null);//returns ERR as null});  }); });};/ /Read articles and their related information Post.get = function (name, callback) {//Open database Mongodb.open (err, db) {if (err) {return cal    Lback (ERR);        }//Read posts Collection db.collection (' posts ', function (err, collection) {if (err) {mongodb.close ();      Return callback (ERR);      } var query = {};      if (name) {query.name = name;        }//Queries the article Collection.find (query) based on the query object. Sort ({time:-1}). ToArray (function (err, docs) {        Mongodb.close (); if (ERR) {return callback (ERR);//Failed! Return ERR} callback (null, docs);//success!    Returns the result of the query as an array});  }); });};

Blog/models/user.js

var MongoDB = require ('./db '); function user (user) {this.name = User.Name;  This.password = User.password; This.email = User.email;}; Module.exports = user;//Store user Information User.prototype.save = function (callback) {//user document to be stored in the database var user = {Name:this.name,p  Assword:this.password,email:this.email}; Open Database Mongodb.open (function (err, db) {if (err) {return callback (ERR);//error. Returns the ERR message}//reads the Users collection db.collection (' Users ', function (err, collection) {if (err) {mongodb.close (); re Turn callback (ERR);//error. return ERR Message}//insert user data into the Users collection Collection.insert (user, {safe:true}, function (err, user) {Mong Odb.close (); if (err) {return callback (ERR);//error, Return err information}callback (NULL, user[0]);//success!
ERR is null and returns the stored user's document});  }); });};/ /read user Information User.get = function (name, callback) {//Open database Mongodb.open (function (err, db) {if (err) {return callback (ER R);//error, return ERR message}//Read the Users Collection db.collection (' Users ', function (err, collection) {if (err) {mongodb.cl OSE (); return callback (ERR);//error. return ERR Info}//Find username (name key) value for name a document Collection.findone ({Name:name}, function (err, user) {Mong Odb.close (); if (err) {return callback (ERR);//Failed!
Returns the ERR information}callback (null, user);//success!
Returns the user information of the query});  }); });};

Blog/public/blog/public/stylesheets/style.css

/* Inspired by http://yihui.name/cn/*/*{padding:0;margin:0;} Body{width:600px;margin:2em auto;padding:0 2em;font-size:14px;font-family: "Microsoft Yahei";} P{line-height:24px;margin:1em 0;} Header{padding:.5em 0;border-bottom:1px solid #cccccc;} nav{position:fixed;left:12em;font-family: "Microsoft Yahei"; font-size:1.1em;text-transform:uppercase;width:9em; Text-align:right;} Nav a{display:block;text-decoration:none;padding:.7em 1em;color: #000000;} Nav a:hover{background-color: #ff0000; color: #f9f9f9;-webkit-transition:color. 2s linear;} Article{font-size:16px;padding-top:.5em;} Article A{color: #dd0000; text-decoration:none;} Article A:hover{color: #333333; text-decoration:underline;}. info{font-size:14px;}

Blog/routes/blog/routes/index.js

/* * GET home page. */var crypto = require (' crypto '), User = require ('.. /models/user.js '), Post=require ('. /models/post.js '); module.exports = function (APP) {app.get ('/', function (req, res) {post.get (null, function (err, post   s) {if (err) {posts = []; } res.render (' Index ', {title: ' Home ', User:req.session.user, posts:posts, Success:req.flash (' suc  Cess '). ToString (), Error:req.flash (' Error '). ToString ()});    });    }); App.get ('/reg ', checknotlogin); App.get ('/reg ', function (req, res) {Res.render (' reg ', {title: ' Register ', User:req.session.user,success:req.flash ('    Success '). ToString (), Error:req.flash (' Error '). ToString ()});    }); App.post ('/reg ', checknotlogin); App.post ('/reg ', function (req, res) {var name = req.body.name, password = req.body.password, password_re = req.body[' password-repeat '];//Verify that the password entered by the user two times is consistent if (password_re! = password) {req.flash (' error ', ' two times entered password inconsistent! '); return Res.redirect ('/reg ');//Return to the booklet page}//generate password MD5 value var md5 = Crypto.createhash (' MD5 '), password = md5.update (Req.body.password). Digest (' hex '); var newuser = new User ({ Name:name,password:password,email:req.body.email});//check if username already exists user.get (newuser.name, function (err, User) { if (user) {Req.flash (' error ', ' Users already exist! '); Return Res.redirect ('/reg ');//Return to the registration page}//assume that there is no new user newuser.save (function (err, user) {if (err) {Req.flash (' error ', err); Return Res.redirect ('/reg ');//register failed to return to the main booklet page}req.session.user = user;//user information deposited Sessionreq.flash (' success ', ' register success! ');    Res.redirect ('/');//After the registration has been successfully returned to the homepage});    });    App.get ('/login ', checknotlogin); App.get ('/login ', function (req, res) {res.render (' login ', {title: ' Login ', User:req.session.user, suc Cess:req.flash (' success '). ToString (), Error:req.flash (' Error '). ToString ()}); App.post ('/login ', checknotlogin); App.post ('/login ', function (req, res) {//Generate password MD5 value var MD5 = Crypto.createhash (' MD5 ') ), Password = md5.update (Req.body.password). Digest (' hex ');//Check if the user exists User.get (req.body. Name, function (err, user) {if (!user) {req.flash (' error ', ' User not present! '); return Res.redirect ('/login ');//Jump to login page if user does not exist}// Check if the password is consistent if (User.password! = password) {req.flash (' error ', ' Password wrong! '); return Res.redirect ('/login ');//Password error jump to login page}// Username passwords are matched, the user information is stored in sessionreq.session.user = User;req.flash (' success ', ' Login successful! '); Res.redirect ('/');//Jump to homepage after successful login}); App.get ('/post ', checklogin); App.get ('/post ', function (req, res) {Res.render (' post ', {title: ' Publish ', User: Req.session.user,success:req.flash (' success '). ToString (), Error:req.flash (' Error '). ToString ()}); Console.log (" 222 ");}); App.post ('/post ', checklogin); App.post ('/post ', function (req, res) {var currentUser = Req.session.user,post = new post (c Urrentuser.name, Req.body.title, Req.body.post);p ost.save (function (err) {if (err) {Req.flash (' error ', err); return Res.redirect ('/');} Req.flash (' success ', ' announced success! '); Res.redirect ('/');//Publish Successful jump to homepage}); App.get ('/logout ', checklogin); App.get ('/logout ', function (req, res) {Req.session.user = Null;req.fLash (' success ', ' logout success! '); Res.redirect ('/');//Goto page after successful logout); function Checklogin (req, res, next) {if (!req.session.user) {req.flash (' error ', ' not logged in !'); Res.redirect ('/login ');} Next ();} function Checknotlogin (req, res, next) {if (Req.session.user) {req.flash (' error ', ' logged in! '); Res.redirect (' Back ');} Next ();}};

Blog/views/blog/views/header.ejs

<! DOCTYPE html>
Blog/views/footer.ejs
</article></body>
Blog/views/index.ejs
<%-include header%><% Posts.foreach (function (post, index) {%>  <p>
Blog/views/reg.ejs
<%-include header%><form method= "post" url= '/reg ' >  username:  <input type= "text" name= "name"/ ><br/>  Password:    <input type= "password" name= "password"/><br/>  Confirm password: <input type= " Password "name=" password-repeat "/><br/>  mailbox:    <input type=" email "name=" email "/><br/>           <input type= "Submit" value= "notes"/></form><%-include footer%>
Blog/views/login.ejs
<%-include header%><form method= "POST" >  username:<input type= "text" name= "name"/><br/>  Password:  <input type= "password" name= "password"/><br/> <input         type= "Submit" value= "Login"/> </form><%-include footer%>
Blog/views/post.ejs
<%-include header%><form method= "post" url= '/post ' >  title:<br/>  <input type= "text" Name= "title"/><br/>  detail:<br/> <textarea  name= "POST" rows= "" "cols=" "></" textarea><br/>  <input type= "Submit" value= "POST"/></form><%-include footer%>

About this question

I found the answer.

Router was executed without session executed while session was used in router, I think
 
node. JS Blog Instance (i) Simple blog