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-rw-r--r--activerecord/lib/active_record/base.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index e1bf2ccc8a..cfe6d8d2de 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -767,6 +767,14 @@ module ActiveRecord #:nodoc:
super || (table_exists? && column_names.include?(attribute.to_s.sub(/=$/, '')))
end
+ def attribute_names
+ @attribute_names ||= if !abstract_class? && table_exists?
+ column_names
+ else
+ []
+ end
+ end
+
# Set the lookup ancestors for ActiveModel.
def lookup_ancestors #:nodoc:
klass = self