FIX: Show emoji in inline oneboxes

app/helpers/application_helper.rb

@@ -230,9 +230,7 @@ module ApplicationHelper
   end
 
   def gsub_emoji_to_unicode(str)
-    if str
-      str.gsub(/:([\w\-+]*(?::t\d)?):/) { |name| Emoji.lookup_unicode($1) || name }
-    end
+    Emoji.gsub_emoji_to_unicode(str)
   end
 
   def application_logo_url

app/helpers/topics_helper.rb

@@ -2,7 +2,7 @@ module TopicsHelper
   include ApplicationHelper
 
   def render_topic_title(topic)
-    link_to(gsub_emoji_to_unicode(topic.title),topic.relative_url)
+    link_to(Emoji.gsub_emoji_to_unicode(topic.title),topic.relative_url)
   end
 
   def categories_breadcrumb(topic)

app/mailers/user_notifications.rb

@@ -426,7 +426,7 @@ class UserNotifications < ActionMailer::Base
     end
 
     email_opts = {
-      topic_title: gsub_emoji_to_unicode(title),
+      topic_title: Emoji.gsub_emoji_to_unicode(title),
       topic_title_url_encoded: title ? URI.encode(title) : title,
       message: message,
       url: post.url(without_slug: SiteSetting.private_email?),

app/models/emoji.rb

@@ -159,6 +159,12 @@ class Emoji
     end.join
   end
 
+  def self.gsub_emoji_to_unicode(str)
+    if str
+      str.gsub(/:([\w\-+]*(?::t\d)?):/) { |name| Emoji.lookup_unicode($1) || name }
+    end
+  end
+
   def self.lookup_unicode(name)
     @reverse_map ||= begin
       map = {}

app/serializers/topic_view_serializer.rb

@@ -95,8 +95,8 @@ class TopicViewSerializer < ApplicationSerializer
     end
 
     if object.suggested_topics.try(:topics).present?
-      result[:suggested_topics] = object.suggested_topics.topics.map do |topic|
-        SuggestedTopicSerializer.new(topic, scope: scope, root: false)
+      result[:suggested_topics] = object.suggested_topics.topics.map do |t|
+        SuggestedTopicSerializer.new(t, scope: scope, root: false)
       end
     end
 
@@ -277,7 +277,7 @@ class TopicViewSerializer < ApplicationSerializer
   end
 
   def unicode_title
-    gsub_emoji_to_unicode(object.topic.title)
+    Emoji.gsub_emoji_to_unicode(object.topic.title)
   end
 
   def include_pm_with_non_human_user?

lib/inline_oneboxer.rb

@@ -26,7 +26,10 @@ class InlineOneboxer
 
         # Only public topics
         if Guardian.new.can_see?(topic)
-          onebox = { url: url, title: topic.title }
+          onebox = {
+            url: url,
+            title: Emoji.gsub_emoji_to_unicode(topic.title)
+          }
           Rails.cache.write(cache_key(url), onebox, expires_in: 1.day)
           return onebox
         end

spec/components/inline_oneboxer_spec.rb

@@ -53,6 +53,15 @@ describe InlineOneboxer do
       expect(InlineOneboxer.lookup(nil)).to be_nil
       expect(InlineOneboxer.lookup("/test")).to be_nil
     end
+
+    it "will return the fancy title" do
+      topic = Fabricate(:topic, title: "Hello :pizza: with an emoji")
+      onebox = InlineOneboxer.lookup(topic.url)
+      expect(onebox).to be_present
+      expect(onebox[:url]).to eq(topic.url)
+      expect(onebox[:title]).to eq("Hello 🍕 with an emoji")
+    end
+
   end