1 files changed, 9 insertions, 4 deletions
diff --git a/activerecord/lib/active_record/errors.rb b/activerecord/lib/active_record/errors.rb
index cd31147414..7e38719811 100644
--- a/activerecord/lib/active_record/errors.rb
+++ b/activerecord/lib/active_record/errors.rb
@@ -69,10 +69,6 @@ module ActiveRecord
     end
   end
 
-  # Raised when SQL statement is invalid and the application gets a blank result.
-  class ThrowResult < ActiveRecordError
-  end
-
   # Defunct wrapper class kept for compatibility.
   # +StatementInvalid+ wraps the original exception now.
   class WrappedDatabaseException < StatementInvalid
@@ -159,6 +155,15 @@ module ActiveRecord
 
   # Raised when unknown attributes are supplied via mass assignment.
   class UnknownAttributeError < NoMethodError
+
+    attr_reader :record, :attribute
+
+    def initialize(record, attribute)
+      @record = record
+      @attribute = attribute.to_s
+      super("unknown attribute: #{attribute}")
+    end
+
   end
 
   # Raised when an error occurred while doing a mass assignment to an attribute through the