Fix yaml metadata title should pass to generateWebTitle

Author: jackycute

lib/response.js

@@ -108,7 +108,7 @@ function responseHackMD(res, note) {
         //na
     }
     var title = models.Note.decodeTitle(note.title);
-    title = models.Note.generateWebTitle(title);
+    title = models.Note.generateWebTitle(meta.title || title);
     var template = config.hackmdpath;
     var options = {
         cache: !config.debug,
@@ -117,7 +117,7 @@ function responseHackMD(res, note) {
     var compiled = ejs.compile(fs.readFileSync(template, 'utf8'), options);
     var html = compiled({
         url: config.serverurl,
-        title: meta.title || title,
+        title: title,
         useCDN: config.usecdn,
         facebook: config.facebook,
         twitter: config.twitter,
@@ -225,10 +225,10 @@ function showPublishNote(req, res, next) {
             var updatetime = note.lastchangeAt;
             var text = S(body).escapeHTML().s;
             var title = models.Note.decodeTitle(note.title);
-            title = models.Note.generateWebTitle(title);
+            title = models.Note.generateWebTitle(meta.title || title);
             var origin = config.serverurl;
             var data = {
-                title: meta.title || title,
+                title: title,
                 description: meta.description,
                 viewcount: note.viewcount,
                 createtime: createtime,
@@ -537,6 +537,7 @@ function showPublishSlide(req, res, next) {
                 return response.errorNotFound(res);
             }
             var body = LZString.decompressFromBase64(note.content);
+            var meta = null;
             try {
                 var obj = metaMarked(body);
                 body = obj.markdown;
@@ -546,12 +547,12 @@ function showPublishSlide(req, res, next) {
             }
             var text = S(body).escapeHTML().s;
             var title = models.Note.decodeTitle(note.title);
-            title = models.Note.generateWebTitle(title);
+            title = models.Note.generateWebTitle(meta.title || title);
             var slides = md.slidify(text, slideOptions);
             var origin = config.serverurl;
             var data = {
                 url: origin,
-                title: meta.title || title,
+                title: title,
                 description: meta.description,
                 slides: slides,
                 GA: meta.GA,