gistfile1.txt

      class SqlEruby < Erubis::EscapedEruby
        def escaped_expr(expr)
          "#{self.class.to_s}.escape(#{expr})"
        end

        def self.escape(str)
          ActiveRecord::Base.connection.instance_variable_get(:@connection).escape(str.to_s)
        end
      end


erb = SqlEruby.new("<%= @hi %>")
erb.evaluate(hi: %Q|!"#$%&'()`*?>+_[@p]|) #=> "!\"\#$%&''()`*?>+_[@p]\n"