Merge pull request rails#33361 from jhubert/bugfix/fix-added-string-attributes

Fix regression in use of string attribute in the added? method

Author: eileencodes

activemodel/lib/active_model/errors.rb

@@ -328,7 +328,7 @@ def add(attribute, message = :invalid, options = {})
     #  person.errors.added? :name, "is too long"                            # => false
     def added?(attribute, message = :invalid, options = {})
       if message.is_a? Symbol
-        self.details[attribute].map { |e| e[:error] }.include? message
+        self.details[attribute.to_sym].map { |e| e[:error] }.include? message
       else
         message = message.call if message.respond_to?(:call)
         message = normalize_message(attribute, message, options)

activemodel/test/cases/errors_test.rb

@@ -185,6 +185,12 @@ def test_no_key
     assert person.errors.added?(:name, :blank)
   end
 
+  test "added? returns true when string attribute is used with a symbol message" do
+    person = Person.new
+    person.errors.add(:name, :blank)
+    assert person.errors.added?("name", :blank)
+  end
+
   test "added? handles proc messages" do
     person = Person.new
     message = Proc.new { "cannot be blank" }