lib/lockbox/calculations.rb in lockbox-0.6.8 vs lib/lockbox/calculations.rb in lockbox-1.0.0

@@ -1,10 +1,15 @@
 module Lockbox
   module Calculations
     def pluck(*column_names)
       return super unless model.respond_to?(:lockbox_attributes)
 
-      lockbox_columns = column_names.map.with_index { |c, i| [model.lockbox_attributes[c.to_sym], i] }.select { |la, _i| la && !la[:migrating] }
+      lockbox_columns = column_names.map.with_index do |c, i|
+        next unless c.respond_to?(:to_sym)
+        [model.lockbox_attributes[c.to_sym], i]
+      end.select do |la, _i|
+        la && !la[:migrating]
+      end
 
       return super unless lockbox_columns.any?
 
       # replace column with ciphertext column
       lockbox_columns.each do |la, i|