on and ON are type casted to a true boolean column

activerecord/lib/active_record/connection_adapters/column.rb

@@ -5,8 +5,8 @@ module ActiveRecord
   module ConnectionAdapters
     # An abstract definition of a column in a table.
     class Column
-      TRUE_VALUES = [true, 1, '1', 't', 'T', 'true', 'TRUE'].to_set
-      FALSE_VALUES = [false, 0, '0', 'f', 'F', 'false', 'FALSE'].to_set
+      TRUE_VALUES = [true, 1, '1', 't', 'T', 'true', 'TRUE', 'on', 'ON'].to_set
+      FALSE_VALUES = [false, 0, '0', 'f', 'F', 'false', 'FALSE', 'off', 'OFF'].to_set
 
       module Format
         ISO_DATE = /\A(\d{4})-(\d\d)-(\d\d)\z/

activerecord/test/cases/column_test.rb

@@ -0,0 +1,29 @@
+require "cases/helper"
+
+module ActiveRecord
+  module ConnectionAdapters
+    class ColumnTest < ActiveRecord::TestCase
+      def test_type_cast_boolean
+        column = Column.new("field", nil, "boolean")
+        assert column.type_cast(true)
+        assert column.type_cast(1)
+        assert column.type_cast('1')
+        assert column.type_cast('t')
+        assert column.type_cast('T')
+        assert column.type_cast('true')
+        assert column.type_cast('TRUE')
+        assert column.type_cast('on')
+        assert column.type_cast('ON')
+        assert !column.type_cast(false)
+        assert !column.type_cast(0)
+        assert !column.type_cast('0')
+        assert !column.type_cast('f')
+        assert !column.type_cast('F')
+        assert !column.type_cast('false')
+        assert !column.type_cast('FALSE')
+        assert !column.type_cast('off')
+        assert !column.type_cast('OFF')
+      end
+    end
+  end
+end