1 files changed, 7 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/core_ext/range/conversions.rb b/activesupport/lib/active_support/core_ext/range/conversions.rb
index 37868f5875..8832fbcb3c 100644
--- a/activesupport/lib/active_support/core_ext/range/conversions.rb
+++ b/activesupport/lib/active_support/core_ext/range/conversions.rb
@@ -2,7 +2,13 @@
 
 module ActiveSupport::RangeWithFormat
   RANGE_FORMATS = {
-    db: Proc.new { |start, stop| "BETWEEN '#{start.to_s(:db)}' AND '#{stop.to_s(:db)}'" }
+    db: -> (start, stop) do
+      case start
+      when String then "BETWEEN '#{start}' AND '#{stop}'"
+      else
+        "BETWEEN '#{start.to_s(:db)}' AND '#{stop.to_s(:db)}'"
+      end
+    end
   }
 
   # Convert range to a formatted string. See RANGE_FORMATS for predefined formats.