helper: move virtal method to helper

Author: JacksonTian

app/model/topic.js

@@ -4,7 +4,6 @@ module.exports = app => {
   const mongoose = app.mongoose;
   const Schema = mongoose.Schema;
   const ObjectId = Schema.ObjectId;
-  const config = app.config;
 
   const TopicSchema = new Schema({
     title: { type: String },
@@ -29,17 +28,5 @@ module.exports = app => {
   TopicSchema.index({ top: -1, last_reply_at: -1 });
   TopicSchema.index({ author_id: 1, create_at: -1 });
 
-  TopicSchema.virtual('tabName').get(function() {
-    const tab = this.tab;
-    const pair = config.tabs.find(function(_pair) {
-      return _pair[0] === tab;
-    });
-
-    if (pair) {
-      return pair[1];
-    }
-    return '';
-  });
-
   return mongoose.model('Topic', TopicSchema);
 };

app/view/topic/_top_good.html

@@ -2,6 +2,6 @@
 <span class='put_top'>置顶</span>
 <% } else if (topic.good) { %>
 <span class='put_good'>精华</span>
-<% } else if (typeof tab !== 'undefined' &&  tab === 'all' && topic.tabName) { %>
-<span class="topiclist-tab"><%= topic.tabName %></span>
+<% } else if (typeof tab !== 'undefined' &&  tab === 'all' && helper.tabName(topic.tab)) { %>
+<span class="topiclist-tab"><%= helper.tabName(topic.tab) %></span>
 <% } %>

app/view/topic/index.html

@@ -62,13 +62,13 @@
         <span>
           <%= topic.visit_count %> 次浏览
         </span>
-        <% if (topic.create_at != topic.update_at) { %>
+        <% if (topic.create_at.toString() !== topic.update_at.toString()) { %>
           <span>
             最后一次编辑是 <%= helper.ago(topic.update_at) %>
           </span>
         <% } %>
         <% if (topic.tab) { %>
-          <span> 来自 <%= topic.tabName %></span>
+          <span> 来自 <%= helper.tabName(topic.tab) %></span>
         <%}%>
 
         <% if (current_user) { %>