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@@ -1139,6 +1139,31 @@
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         attribute_key_name.humanize
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       end
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+      # Allows you to make aliases for attributes, which includes 
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+      # getter, setter, query, and finder methods.
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+      #
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+      # Example:
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+      #
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+      #   class Content < ActiveRecord::Base
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+      #     # has a title attribute
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+      #   end
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+      #
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+      #   class Email < Content
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+      #     alias_attribute :subject, :title
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+      #   end
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+      #
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+      #   e = Email.find(1)
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+      #   e.title    # => "Superstars"
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+      #   e.subject  # => "Superstars"
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+      #   e.subject? # => true
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+      #   e.subject = "Megastars"
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+      #   e.title    # => "Megastars"
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+      #   e == Email.find_by_subject("Superstars") # => true
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+      def alias_attribute(new_name, old_name)
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+        super
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+        attribute_aliases[new_name.to_s] = old_name.to_s
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+      end
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+
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       # True if this isn't a concrete subclass needing a STI type condition.
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       def descends_from_active_record?
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         if superclass.abstract_class?
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@@ -1558,7 +1583,13 @@
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         end
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         def extract_attribute_names_from_match(match)
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-          match.captures.last.split('_and_')
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+          match.captures.last.split('_and_').map do |attribute|
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+            attribute_aliases[attribute] || attribute
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+          end
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+        end
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+        
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+        def attribute_aliases
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+          @@attribute_aliases ||= {}
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         end
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         def construct_attributes_from_arguments(attribute_names, arguments)

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@@ -426,6 +426,10 @@
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     assert_equal accounts(:rails_core_account), Account.find_by_credit_limit(50, :order => 'id DESC')
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   end
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+  def test_find_by_aliased_attribute
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+    assert_equal topics(:first), Topic.find_by_author_email('david@loudthinking.com')
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+  end
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+
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   def test_find_by_one_attribute_with_conditions
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     assert_equal accounts(:rails_core_account), Account.find_by_credit_limit(50, :conditions => ['firm_id = ?', 6])
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   end

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@@ -14,6 +14,7 @@
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     id
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   end
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+  alias_attribute :author_email, :author_email_address
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   protected
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     def approved=(val)