Merge pull request #2065 from biggianteye/fix-sponsor-chapter-filter

Fix showing duplicate sponsors

Author: KimberleyCook

app/models/sponsors_search.rb

@@ -26,6 +26,8 @@ def by_name
   end
 
   def by_chapter
-    @sponsors = sponsors.joins(:workshops).where('workshops.chapter_id' => chapter) if chapter.present?
+    if chapter.present?
+      @sponsors = sponsors.joins(:workshops).where('workshops.chapter_id' => chapter).group('sponsors.id')
+    end
   end
 end