lib/unipept/formatters.rb in unipept-0.3.5 vs lib/unipept/formatters.rb in unipept-0.4.0

@@ -61,12 +61,12 @@
 
     def format(data)
       CSV.generate do |csv|
         data.each do |o|
           if o.kind_of? Array
-            o.each {|h| csv << h.values }
+            o.each {|h| csv << h.values.map { |v| v == ""  ? nil : v }}
           else
-            csv << o.values
+            csv << o.values.map { |v| v == "" ? nil : v }
           end
         end
       end
     end
   end