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@@ -1093,13 +1093,14 @@ module SymetrieCom
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         private
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           # override the sql preparation method to exclude the lft/rgt columns
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           # under the same conditions that the primary key column is excluded
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-          def attributes_with_quotes(include_primary_key = true, include_readonly_attributes = true) #:nodoc:
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+          def attributes_with_quotes(include_primary_key = true, include_readonly_attributes = true, attribute_names = @attributes.keys) #:nodoc:
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             left_and_right_column = [acts_as_nested_set_options[:left_column], acts_as_nested_set_options[:right_column]]
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-            quoted = attributes.inject({}) do |quoted, (name, value)|
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+            quoted = {}
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+            connection = self.class.connection
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+            attribute_names.each do |name|
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               if column = column_for_attribute(name)
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-                quoted[name] = quote_value(value, column) unless !include_primary_key && (column.primary || left_and_right_column.include?(column.name))
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+                quoted[name] = connection.quote(read_attribute(name), column) unless !include_primary_key && (column.primary || left_and_right_column.include?(column.name))
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               end
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-              quoted
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             end
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             include_readonly_attributes ? quoted : remove_readonly_attributes(quoted)
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           end