Webrat Webrat

I don't know if this is even the right issue tracker to report this to. Essentially, rspec-rails 2 pulls in Webrat for integration specs automatically. However, it configures it as rack:

Webrat.configure do |config|
  config.mode = :rack
end

Which is probably for the best, because mode = :rails just explodes in Rails3. However, this causes Webrat::Field#to_param to not use the rails param hash => query string helper, and instead use a simple one. This becomes an issue when using a rails form with multiple checkboxes of the same name, like foo[bar][]. The simplified webrat param maker just uses the first value from the value array, instead of setting them all.

I think the best solution would be to either add another when to the case statement:

when :rails
  Rack::Utils.parse_nested_query("#{name}=#{escaped_value}")

or just make using Rack::Utils be the default case, since we can probably expect it to be available in all cases.