Multiple Case Expressions ruby : I have two fields field1 and field2. I need to do a case on both the fields and switch it into corresponding when outputs

     case field1
      when "val1"
       puts field1
      when "val2"
       puts field2
     end

     case field2
      when "val1"
       puts field1
      when "val2"
       puts field2
     end

So, how can i implement something like above in a single case statement

something like this

     case field1,field2
      when "val1"
       puts field1
      when "val2"
       puts field2
     end

will any monkey patching help??
any help are apreciated..
thanks