Run validations in the order they were declared. Closes #6657.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5588 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Run validations in the order they were declared.  #6657 [obrie]
+
 * MySQL: detect when a NOT NULL column without a default value is misreported as default ''.  Can't detect for string, text, and binary columns since '' is a legitimate default.  #6156 [simon@redhillconsulting.com.au, obrie, Jeremy Kemper]
 
 * Simplify association proxy implementation by factoring construct_scope out of method_missing.  #6643 [martin]

activerecord/lib/active_record/validations.rb

@@ -730,7 +730,7 @@ module ActiveRecord
       private
         def write_inheritable_set(key, methods)
           existing_methods = read_inheritable_attribute(key) || []
-          write_inheritable_attribute(key, methods | existing_methods)
+          write_inheritable_attribute(key, existing_methods | methods)
         end
 
         def validation_method(on)

activerecord/test/validations_test.rb

@@ -877,7 +877,7 @@ class ValidationsTest < Test::Unit::TestCase
     d = Developer.new
     d.salary = "0"
     assert !d.valid?
-    assert_equal d.errors.on(:salary).first, "This string contains 'single' and \"double\" quotes"
+    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:salary).last
   end
 
   def test_validates_confirmation_of_with_custom_error_using_quotes
@@ -902,7 +902,7 @@ class ValidationsTest < Test::Unit::TestCase
     d = Developer.new
     d.salary = "90,000"
     assert !d.valid?
-    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:salary).first
+    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:salary).last
   end
 
   def test_validates_length_of_with_custom_too_long_using_quotes
@@ -910,7 +910,7 @@ class ValidationsTest < Test::Unit::TestCase
     d = Developer.new
     d.name = "Jeffrey"
     assert !d.valid?
-    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).first
+    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).last
   end
 
   def test_validates_length_of_with_custom_too_short_using_quotes
@@ -918,7 +918,7 @@ class ValidationsTest < Test::Unit::TestCase
     d = Developer.new
     d.name = "Joe"
     assert !d.valid?
-    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).first
+    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).last
   end
 
   def test_validates_length_of_with_custom_message_using_quotes
@@ -926,7 +926,7 @@ class ValidationsTest < Test::Unit::TestCase
     d = Developer.new
     d.name = "Joe"
     assert !d.valid?
-    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).first
+    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).last
   end
 
   def test_validates_presence_of_with_custom_message_using_quotes
@@ -942,7 +942,7 @@ class ValidationsTest < Test::Unit::TestCase
     d = Developer.new
     d.name = "David"
     assert !d.valid?
-    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).first
+    assert_equal "This string contains 'single' and \"double\" quotes", d.errors.on(:name).last
   end
 
   def test_validates_associated_with_custom_message_using_quotes
@@ -951,7 +951,7 @@ class ValidationsTest < Test::Unit::TestCase
     r = Reply.create("title" => "A reply", "content" => "with content!")
     r.topic = Topic.create("title" => "uhohuhoh")
     assert !r.valid?
-    assert_equal "This string contains 'single' and \"double\" quotes", r.errors.on(:topic).first
+    assert_equal "This string contains 'single' and \"double\" quotes", r.errors.on(:topic).last
   end
 
   def test_conditional_validation_using_method_true
@@ -1025,6 +1025,15 @@ class ValidationsTest < Test::Unit::TestCase
     assert xml.include?("<error>Title is Wrong Create</error>")
     assert xml.include?("<error>Content Empty</error>")
   end
+
+ def test_validation_order
+    Topic.validates_presence_of :title
+    Topic.validates_length_of :title, :minimum => 2
+
+    t = Topic.new("title" => "")
+    assert !t.valid?
+    assert_equal "can't be blank", t.errors.on("title").first
+ end
 end