<p><b>@tomhughes</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/1309">app/controllers/diary_entry_controller.rb</a>:</p>
<pre style='color:#555'>>        end
 
+      # Add the commenter to the subscribers if necessary
+      @entry.subscribers << @user unless @entry.subscribers.exists?(@user.id)
</pre>
<p>Rails lets you use a model object and it's ID more or interchangeably so this is likely not going to cause any problem.</p>

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