add link to authors( >= 1 ) for show, before only add link when authors > 1

app/models/writing_conference.rb

@@ -199,7 +199,7 @@ class WritingConference
     when "url"
       value = self.url.to_s.blank? ? "" : "<a href='#{self.url}'>#{self.url}</a>"
     when "authors"
-      value = get_authors_show(self)
+      value = get_member_show(self) rescue ""
     else
       value = self.send(field) rescue ""
     end
@@ -223,4 +223,4 @@ class WritingConference
     end
   end
 
-end
+end