From 334983eca042b5016d3d79d7ed5761b60ba871ed Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Rodri=CC=81guez=20Troitin=CC=83o?=
 <drodrigueztroitino@yahoo.es>
Date: Mon, 15 Mar 2010 19:11:46 +0100
Subject: Recovers error_messages for ActiveRecordInstanceTag. [#4078
 state:resolved]

Signed-off-by: wycats <wycats@gmail.com>
---
 actionpack/lib/action_view/helpers/active_model_helper.rb |  4 ++++
 actionpack/test/template/active_model_helper_test.rb      | 14 ++++++++++++++
 2 files changed, 18 insertions(+)

(limited to 'actionpack')

diff --git a/actionpack/lib/action_view/helpers/active_model_helper.rb b/actionpack/lib/action_view/helpers/active_model_helper.rb
index e3db2923f7..bbe8609e91 100644
--- a/actionpack/lib/action_view/helpers/active_model_helper.rb
+++ b/actionpack/lib/action_view/helpers/active_model_helper.rb
@@ -295,6 +295,10 @@ module ActionView
         end
       end
 
+      def error_message
+        object.errors[@method_name]
+      end
+
       def column_type
         object.send(:column_for_attribute, @method_name).type
       end
diff --git a/actionpack/test/template/active_model_helper_test.rb b/actionpack/test/template/active_model_helper_test.rb
index 371aa53c68..71c7d5b621 100644
--- a/actionpack/test/template/active_model_helper_test.rb
+++ b/actionpack/test/template/active_model_helper_test.rb
@@ -147,6 +147,20 @@ class ActiveModelHelperTest < ActionView::TestCase
     )
   end
 
+  def test_field_error_proc
+    old_proc = ActionView::Base.field_error_proc
+    ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
+      %(<div class=\"fieldWithErrors\">#{html_tag} <span class="error">#{[instance.error_message].join(', ')}</span></div>).html_safe
+    end
+
+    assert_dom_equal(
+      %(<div class="fieldWithErrors"><input id="post_author_name" name="post[author_name]" size="30" type="text" value="" /> <span class="error">can't be empty</span></div>),
+      text_field("post", "author_name")
+    )
+  ensure
+    ActionView::Base.field_error_proc = old_proc if old_proc
+  end
+
   def test_form_with_string
     assert_dom_equal(
       %(<form action="create" method="post"><p><label for="post_title">Title</label><br /><input id="post_title" name="post[title]" size="30" type="text" value="Hello World" /></p>\n<p><label for="post_body">Body</label><br /><div class="fieldWithErrors"><textarea cols="40" id="post_body" name="post[body]" rows="20">Back to the hill and over it again!</textarea></div></p><input name="commit" type="submit" value="Create" /></form>),
-- 
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