1 files changed, 16 insertions, 8 deletions

diff --git a/activerecord/lib/active_record/type/integer.rb b/activerecord/lib/active_record/type/integer.rb
index fc260a081a..2ab2402dfd 100644
--- a/activerecord/lib/active_record/type/integer.rb
+++ b/activerecord/lib/active_record/type/integer.rb
@@ -1,7 +1,11 @@
 module ActiveRecord
   module Type
     class Integer < Value # :nodoc:
-      include Numeric
+      include Helpers::Numeric
+
+      # Column storage size in bytes.
+      # 4 bytes means a MySQL int or Postgres integer as opposed to smallint etc.
+      DEFAULT_LIMIT = 4
 
       def initialize(*)
         super
@@ -12,13 +16,19 @@ module ActiveRecord
         :integer
       end
 
-      alias type_cast_for_database type_cast
-
       def type_cast_from_database(value)
         return if value.nil?
         value.to_i
       end
 
+      def type_cast_for_database(value)
+        result = type_cast(value)
+        if result
+          ensure_in_range(result)
+        end
+        result
+      end
+
       protected
 
       attr_reader :range
@@ -30,20 +40,18 @@ module ActiveRecord
         when true then 1
         when false then 0
         else
-          result = value.to_i rescue nil
-          ensure_in_range(result) if result
-          result
+          value.to_i rescue nil
         end
       end
 
       def ensure_in_range(value)
         unless range.cover?(value)
-          raise RangeError, "#{value} is out of range for #{self.class} with limit #{limit || 4}"
+          raise RangeError, "#{value} is out of range for #{self.class} with limit #{limit || DEFAULT_LIMIT}"
         end
       end
 
       def max_value
-        limit = self.limit || 4
+        limit = self.limit || DEFAULT_LIMIT
         1 << (limit * 8 - 1) # 8 bits per byte with one bit for sign
       end