Coding with Node.js Part 4 - Section 3

AdminPages.js

// Includes
var crypto = require('crypto');

function hashString(value) {
  hash = crypto.createHash('sha1');
  hash.update(value);
  return hash.digest('hex');
}

var AdminPages = module.exports = function AdminPages(){};

AdminPages.prototype = {

	  db: null

	, initPages: function(app, db){
	
		this.db = db;
		var self = this;
		
		/* ... */
		app.get ('/Admin/NewPost', function(req, res) { self.pagePost(req, res); }  );
		app.post('/Admin/Post', function(req, res) { self.pagePostPost(req, res); }  );
		app.get ('/Admin/Post/:id', function(req, res) { self.pagePost(req, res); }  );
		/* ... */
	}
	
	/* ... */
	
	, pagePost: function(req, res){ // Edit/New Page
		if( !this._checkLogin(req, res) ) return;
		
		if(req.params.id){ // Old Post
		
			var blogpost = this.db.model('blogPost');
			blogpost.findOne({sid: req.params.id}, function(err, row){
				if(!row){
					res.redirect('/Admin/NewPost');
					return;
				}
				
				res.render('admin/post', {
					title: req.params.id + ' - ' + row.title,
					post: row,
					showFullNav: false
				});
			});
		
		}else{ // New Post
			var newid = 1;
			var blogpost = this.db.model('blogPost');
			blogpost.find().sort("sid", -1).limit(1).exec(function(err, doc){
				if(err)
					console.info(err);
					
				if(!doc || doc.length == 0){
					newid = 1;
				}else{
					newid = doc[0].sid + 1;
				}
		
				res.render('admin/post', {
					title: 'New Blog Post',
					post: {	id		: "",
							sid		: newid,
							author	: "mikevalstar@gmail.com",
							title	: "",
							img_lg	: "",
							img_sm	: "",
							content	: "",
							short	: "",
							ext_link: "",
							posted	: "",
							edited	: "",
						},
					showFullNav: false
				});
			});
		}
	}
	
	, pagePostPost: function(req, res){
		if( !this._checkLogin(req, res) ) return;
		
		if(req.body.id && req.body.id != ""){
			// old page
			var blogpost = this.db.model('blogPost');
			
			blogpost.update(
				{_id: req.body.id},
				{
					sid		: req.body.sid,
					title	: req.body.title,
					img_lg	: req.body.img_lg,
					img_sm	: req.body.img_sm,
					content	: req.body.content,
					short	: req.body.short,
					ext_link: req.body.ext_link,
				},
				{ multi: false },
				function(err, numrows){
					if(err){
						console.log(err);
					}else{
						console.log("Updated ("+numrows+") blog post(s) at internal id: " + req.body.id);
					}
					
					res.redirect('/Admin/Post/' + req.body.sid);
				});
			
		}else{
			// new page
			var blogpost = this.db.model('blogPost');
			
			// max id + 1
			var newid = 1;
			blogpost.find().sort("sid", -1).limit(1).exec(function(err, doc){
				if(err)
					console.info(err);
					
				if(!doc || doc.length == 0){
					newid = 1;
				}else{
					newid = doc[0].sid + 1;
				}
				
				// new blog post
				var post = new blogpost({
					sid		: req.body.sid == "" ? parseInt(newid) : req.body.sid,
					author	: "mikevalstar@gmail.com",
					title	: req.body.title,
					img_lg	: req.body.img_lg,
					img_sm	: req.body.img_sm,
					content	: req.body.content,
					short	: req.body.short,
					ext_link: req.body.ext_link,
				});
				
				post.save(function(err){
					if(err){
						console.log(err);
					}else{
						console.log("Inserted new blog post at sid: " + post.sid + " at internal id: " + post.id);
					}
					
					res.redirect('/Admin/Post/' + post.sid);
				});
				
			});
			
		}
	}
	
};

post.jade

h2 Edit Post 
	span.postid= post.id

form(method="post", action="/Admin/Post")
	input(type="hidden", name="id", value=post.id)
	h3 ID 
		input(type="text", name="sid", value=post.sid)
	h3 Title
	input(type="text", name="title", style="width: 100%;", value=post.title)
	h4 Image Large
	input(type="text", name="img_lg", style="width: 50%;", value=post.img_lg)
	h4 Image Small
	input(type="text", name="img_sm", style="width: 50%;", value=post.img_sm)
	h3 Content
	textarea(name="short", style="width: 100%; height: 5em;")= post.short
	textarea(name="content", style="width: 100%; height: 20em;")= post.content
	span.i All content is in jade format
	h4 Link to external content
	input(type="text", name="ext_link", style="width: 100%;", value=post.ext_link)
	br
	input(type="submit", value="Save")