instance method inspect

# File activerecord/lib/active_record/core.rb, line 511
    def inspect
      # We check defined?(@attributes) not to issue warnings if the object is
      # allocated but not initialized.
      inspection = if defined?(@attributes) && @attributes
        self.class.attribute_names.collect do |name|
          if has_attribute?(name)
            attr = _read_attribute(name)
            value = if attr.nil?
              attr.inspect
            else
              attr = format_for_inspect(attr)
              inspection_filter.filter_param(name, attr)
            end
            "#{name}: #{value}"
          end
        end.compact.join(", ")
      else
        "not initialized"
      end

      "#<#{self.class} #{inspection}>"
    end