[openstreetmap/openstreetmap-website] Diary entry comment subscriptions (#1309)

[Tom Hughes]

tomhughes commented on this pull request.



>        end
 
+      # Add the commenter to the subscribers if necessary
+      @entry.subscribers << @user unless @entry.subscribers.exists?(@user.id)

Rails lets you use a model object and it's ID more or interchangeably so this is likely not going to cause any problem.

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