Allow find(:last) :order be a symbol [#2024 state:resolved]

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

activerecord/lib/active_record/base.rb

@@ -1537,7 +1537,7 @@ def find_last(options)
         end
 
         def reverse_sql_order(order_query)
-          reversed_query = order_query.split(/,/).each { |s|
+          reversed_query = order_query.to_s.split(/,/).each { |s|
             if s.match(/\s(asc|ASC)$/)
               s.gsub!(/\s(asc|ASC)$/, ' DESC')
             elsif s.match(/\s(desc|DESC)$/)

activerecord/test/cases/base_test.rb

@@ -1790,6 +1790,11 @@ def test_find_multiple_ordered_last
     assert_equal last, Developer.find(:all, :order => 'developers.name, developers.salary DESC').last
   end
 
+  def test_find_symbol_ordered_last
+    last  = Developer.find :last, :order => :salary
+    assert_equal last, Developer.find(:all, :order => :salary).last
+  end
+
   def test_find_scoped_ordered_last
     last_developer = Developer.with_scope(:find => { :order => 'developers.salary ASC' }) do
       Developer.find(:last)