Ensure checked value is a string when validating case-sensitive uniqu…

…eness [#361 state:resolved]

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

activerecord/lib/active_record/validations.rb

@@ -664,7 +664,7 @@ def validates_uniqueness_of(*attr_names)
             # As MySQL/Postgres don't have case sensitive SELECT queries, we try to find duplicate
             # column in ruby when case sensitive option
             if configuration[:case_sensitive] && finder_class.columns_hash[attr_name.to_s].text?
-              found = results.any? { |a| a[attr_name.to_s] == value }
+              found = results.any? { |a| a[attr_name.to_s] == value.to_s }
             end
 
             if found

activerecord/test/cases/validations_test.rb

@@ -477,6 +477,15 @@ def test_validate_case_sensitive_uniqueness
     assert_not_equal "has already been taken", t3.errors.on(:title)
   end
 
+  def test_validate_case_sensitive_uniqueness_with_attribute_passed_as_integer
+    Topic.validates_uniqueness_of(:title, :case_sensitve => true)
+    t = Topic.create!('title' => 101)
+
+    t2 = Topic.new('title' => 101)
+    assert !t2.valid?
+    assert t2.errors.on(:title)
+  end
+
   def test_validate_uniqueness_with_non_standard_table_names
     i1 = WarehouseThing.create(:value => 1000)
     assert !i1.valid?, "i1 should not be valid"