removing static saving of recent post, and added in dynamic pulling on Topics.get

public/templates/category.tpl

@@ -21,8 +21,8 @@
 				<div class="span11 topic-row img-polaroid">
 					<div class="latest-post visible-desktop">
 						<div class="pull-right">
-							<img style="width: 48px; height: 48px; /*temporary*/" src="/graph/users/{topics.recent_author}/picture" />
+							<img style="width: 48px; height: 48px; /*temporary*/" src="/graph/users/{topics.teaser_username}/picture" />
-							<p><strong>{topics.recent_author}</strong>: {topics.recent_post}</p>
+							<p><strong>{topics.teaser_username}</strong>: {topics.teaser_text}</p>
 						</div>
 					</div>
 					<div>

src/posts.js

@@ -37,7 +37,6 @@ marked.setOptions({
 				var uid = post_data.uid[i],
 					pid = post_data.pid[i];
 					
-				console.log(current_user, uid);
 				if (post_data.deleted[i] === null || (post_data.deleted[i] === '1' && manage_content) || current_user === uid) {
 					var post_obj = {
 						'pid' : pid,
@@ -307,9 +306,6 @@ marked.setOptions({
 
 
 					user.getUserFields(uid, ['username'], function(data){
-						RDB.set('tid:' + tid + ':recent:post', content);
-						RDB.set('tid:' + tid + ':recent:author', data.username);
-
 						//add active users to this category
 						RDB.get('tid:' + tid + ':cid', function(err, cid) {
 							RDB.handle(err);

src/topics.js

@@ -3,7 +3,13 @@ var	RDB = require('./redis.js'),
 	utils = require('./utils.js'),
 	user = require('./user.js'),
 	configs = require('../config.js'),
-	categories = require('./categories.js');
+	categories = require('./categories.js'),
+	marked = require('marked')
+	async = require('async');
+
+marked.setOptions({
+	breaks: true
+});
 
 (function(Topics) {
 
@@ -30,8 +36,6 @@ var	RDB = require('./redis.js'),
 				locked = [],
 				deleted = [],
 				pinned = [],
-				recent_post = [],
-				recent_author = [];
 
 			for (var i=0, ii=tids.length; i<ii; i++) {
 				title.push('tid:' + tids[i] + ':title');
@@ -42,8 +46,6 @@ var	RDB = require('./redis.js'),
 				locked.push('tid:' + tids[i] + ':locked');
 				deleted.push('tid:' + tids[i] + ':deleted');
 				pinned.push('tid:' + tids[i] + ':pinned');
-				recent_post.push('tid:' + tids[i] + ':recent:post');
-				recent_author.push('tid:' + tids[i] + ':recent:author');
 			}
 
 			var multi = RDB.multi()
@@ -60,8 +62,6 @@ var	RDB = require('./redis.js'),
 					.mget(locked)
 					.mget(deleted)
 					.mget(pinned)
-					.mget(recent_post)
-					.mget(recent_author)
 			}
 				
 			
@@ -84,18 +84,17 @@ var	RDB = require('./redis.js'),
 					locked = replies[7];
 					deleted = replies[8];
 					pinned = replies[9];
-					recent_post = replies[10];
-					recent_author = replies[11];
 
 					var usernames,
 						has_read,
-						moderators;
+						moderators,
+						teaser_info;
 
 					function generate_topic() {
-						if (!usernames || !has_read || !moderators) return;
+						if (!usernames || !has_read || !moderators || !teaser_info) return;
-
 
 						for (var i=0, ii=title.length; i<ii; i++) {
+							console.log(teaser_info[i]);
 							topics.push({
 								'title' : title[i],
 								'uid' : uid[i],
@@ -109,9 +108,10 @@ var	RDB = require('./redis.js'),
 								'pinned': parseInt(pinned[i] || 0),	// For sorting purposes
 								'pin-icon': pinned[i] === '1' ? 'icon-pushpin' : 'none',
 								'badgeclass' : (has_read[i] && current_user !=0) ? '' : 'badge-important',
-								'recent_post' : recent_post[i],
+								'teaser_text': teaser_info[i].text,
-								'recent_author' : recent_author[i]
+								'teaser_username': teaser_info[i].username
 							});
+							console.log(teaser_info[i].text, teaser_info[i].username);
 						}
 
 						// Float pinned topics to the top
@@ -152,7 +152,12 @@ var	RDB = require('./redis.js'),
 					categories.getModerators(category_id, function(mods) {
 						moderators = mods;
 						generate_topic();
-					})
+					});
+
+					Topics.get_teasers(tids, function(teasers) {
+						teaser_info = teasers;
+						generate_topic();
+					});
 				}
 				else {
 					callback({
@@ -189,6 +194,42 @@ var	RDB = require('./redis.js'),
 		});
 	}
 
+	Topics.get_teasers = function(tids, callback) {
+		var	requests = [];
+		if (Array.isArray(tids)) {
+			for(x=0,numTids=tids.length;x<numTids;x++) {
+				(function(x) {
+					requests.push(function(next) {
+						Topics.get_teaser(tids[x], function(teaser_info) {
+							next(null, teaser_info);
+						});
+					});
+				})(x);
+			}
+			async.parallel(requests, function(err, teasers) {
+				callback(teasers);
+			});
+		} else callback([]);
+	}
+
+	Topics.get_teaser = function(tid, callback) {
+		RDB.lrange('tid:' + tid + ':posts', -1, -1, function(err, pid) {
+			if (pid !== null) {
+				RDB.mget([
+					'pid:' + pid + ':content',
+					'pid:' + pid + ':uid'
+				], function(err, content) {
+					user.getUserField(content[1], 'username', function(username) {
+						callback({
+							"text": utils.strip_tags(marked(content[0])),
+							"username": username
+						});
+					});
+				});
+			}
+		});
+	}
+
 	Topics.post = function(socket, uid, title, content, category_id) {
 		if (!category_id) throw new Error('Attempted to post without a category_id');
 		

src/utils.js

@@ -47,8 +47,18 @@ var utils = {
 				.replace(/-+/g, '-'); // collapse dashes
 
 		return str;
-	}
+	},
 
+	// Willingly stolen from: http://phpjs.org/functions/strip_tags/
+	'strip_tags': function(input, allowed) {
+		allowed = (((allowed || "") + "").toLowerCase().match(/<[a-z][a-z0-9]*>/g) || []).join(''); // making sure the allowed arg is a string containing only tags in lowercase (<a><b><c>)
+		var	tags = /<\/?([a-z][a-z0-9]*)\b[^>]*>/gi,
+			commentsAndPhpTags = /<!--[\s\S]*?-->|<\?(?:php)?[\s\S]*?\?>/gi;
+
+		return input.replace(commentsAndPhpTags, '').replace(tags, function ($0, $1) {
+			return allowed.indexOf('<' + $1.toLowerCase() + '>') > -1 ? $0 : '';
+		});
+	}
 }
 
 module.exports = utils;

src/webserver.js

@@ -227,13 +227,12 @@ var express = require('express'),
 	app.get('/api/:method/:id*', api_method);
 
 	app.get('/test', function(req, res) {
-		categories.getModerators(2, function(mods) {
+		topics.get_teasers([1, 2, 3], function(teasers) {
-			res.send(JSON.stringify(mods));
+			res.send(JSON.stringify(teasers));
 		});
 	});
 
 
-
 	//START TODO: MOVE TO GRAPH.JS 
 
 	app.get('/graph/users/:username/picture', function(req, res) {