5 files changed, 17 insertions, 6 deletions
diff --git a/activemodel/lib/active_model/attribute_methods.rb b/activemodel/lib/active_model/attribute_methods.rb
index f04829ef09..b7c368ad8d 100644
--- a/activemodel/lib/active_model/attribute_methods.rb
+++ b/activemodel/lib/active_model/attribute_methods.rb
@@ -221,7 +221,7 @@ module ActiveModel
 
       def alias_attribute(new_name, old_name)
         attribute_method_matchers.each do |matcher|
-          module_eval <<-STR, __FILE__, __LINE__+1
+          module_eval <<-STR, __FILE__, __LINE__ + 1
             def #{matcher.method_name(new_name)}(*args)
               send(:#{matcher.method_name(old_name)}, *args)
             end
@@ -265,7 +265,7 @@ module ActiveModel
               else
                 method_name = matcher.method_name(attr_name)
 
-                generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__+1
+                generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__ + 1
                   if method_defined?(:#{method_name})
                     undef :#{method_name}
                   end
diff --git a/activemodel/lib/active_model/callbacks.rb b/activemodel/lib/active_model/callbacks.rb
index d4e98de57b..ad12600d7c 100644
--- a/activemodel/lib/active_model/callbacks.rb
+++ b/activemodel/lib/active_model/callbacks.rb
@@ -105,7 +105,7 @@ module ActiveModel
     end
 
     def _define_before_model_callback(klass, callback) #:nodoc:
-      klass.class_eval <<-CALLBACK, __FILE__, __LINE__
+      klass.class_eval <<-CALLBACK, __FILE__, __LINE__ + 1
         def self.before_#{callback}(*args, &block)
           set_callback(:#{callback}, :before, *args, &block)
         end
@@ -113,7 +113,7 @@ module ActiveModel
     end
 
     def _define_around_model_callback(klass, callback) #:nodoc:
-      klass.class_eval <<-CALLBACK, __FILE__, __LINE__
+      klass.class_eval <<-CALLBACK, __FILE__, __LINE__ + 1
         def self.around_#{callback}(*args, &block)
           set_callback(:#{callback}, :around, *args, &block)
         end
@@ -121,7 +121,7 @@ module ActiveModel
     end
 
     def _define_after_model_callback(klass, callback) #:nodoc:
-      klass.class_eval <<-CALLBACK, __FILE__, __LINE__
+      klass.class_eval <<-CALLBACK, __FILE__, __LINE__ + 1
         def self.after_#{callback}(*args, &block)
           options = args.extract_options!
           options[:prepend] = true
diff --git a/activemodel/lib/active_model/errors.rb b/activemodel/lib/active_model/errors.rb
index 64b28f6def..e6c86c7843 100644
--- a/activemodel/lib/active_model/errors.rb
+++ b/activemodel/lib/active_model/errors.rb
@@ -142,6 +142,11 @@ module ActiveModel
       to_a.size
     end
 
+    # Returns true if there are any errors, false if not.
+    def empty?
+      all? { |k, v| v && v.empty? }
+    end
+
     # Returns an xml formatted representation of the Errors hash.
     # 
     #   p.errors.add(:name, "can't be blank")
diff --git a/activemodel/lib/active_model/version.rb b/activemodel/lib/active_model/version.rb
index a33657626f..aac47d5f81 100644
--- a/activemodel/lib/active_model/version.rb
+++ b/activemodel/lib/active_model/version.rb
@@ -3,7 +3,7 @@ module ActiveModel
     MAJOR = 3
     MINOR = 0
     TINY  = 0
-    BUILD = "beta2"
+    BUILD = "beta3"
 
     STRING = [MAJOR, MINOR, TINY, BUILD].join('.')
   end
diff --git a/activemodel/test/cases/validations_test.rb b/activemodel/test/cases/validations_test.rb
index 9fedd84c73..925a68da91 100644
--- a/activemodel/test/cases/validations_test.rb
+++ b/activemodel/test/cases/validations_test.rb
@@ -97,6 +97,12 @@ class ValidationsTest < ActiveModel::TestCase
     assert_equal 2, r.errors.count
   end
 
+  def test_errors_empty_after_errors_on_check
+    t = Topic.new
+    assert t.errors[:id].empty?
+    assert t.errors.empty?
+  end
+
   def test_validates_each
     hits = 0
     Topic.validates_each(:title, :content, [:title, :content]) do |record, attr|