FIX: OpenGraph should feature the desired post, if found in the set.

app/assets/javascripts/discourse/views/topic_view.js

@@ -346,7 +346,6 @@ Discourse.TopicView.reopenClass({
         var header = $('header');
         var title = $('#topic-title');
         var expectedOffset = title.height() - header.find('.contents').height();
-        console.log(expectedOffset);
 
         if (expectedOffset < 0) {
           expectedOffset = 0;

lib/topic_view.rb

@@ -86,14 +86,23 @@ class TopicView
     @topic.title
   end
 
-  def summary
+  def desired_post
+    return @desired_post if @desired_post.present?
     return nil if posts.blank?
-    Summarize.new(posts.first.cooked).summary
+
+    @desired_post = posts.detect {|p| p.post_number == @post_number.to_i}
+    @desired_post ||= posts.first
+    @desired_post
+  end
+
+  def summary
+    return nil if desired_post.blank?
+    Summarize.new(desired_post.cooked).summary
   end
 
   def image_url
-    return nil if posts.blank?
-    posts.first.user.small_avatar_url
+    return nil if desired_post.blank?
+    desired_post.user.small_avatar_url
   end
 
   def filter_posts(opts = {})

spec/components/topic_view_spec.rb

@@ -257,22 +257,26 @@ describe TopicView do
 
       it "snaps to the lower boundary" do
         near_view = topic_view_near(p1)
+        near_view.desired_post.should == p1
         near_view.posts.should == [p1, p2, p3]
       end
 
       it "snaps to the upper boundary" do
         near_view = topic_view_near(p5)
+        near_view.desired_post.should == p5
         near_view.posts.should == [p2, p3, p5]
       end
 
       it "returns the posts in the middle" do
         near_view = topic_view_near(p2)
+        near_view.desired_post.should == p2
         near_view.posts.should == [p1, p2, p3]
       end
 
       it "returns deleted posts to an admin" do
         coding_horror.admin = true
         near_view = topic_view_near(p3)
+        near_view.desired_post.should == p3
         near_view.posts.should == [p2, p3, p4]
       end