Creating and submitting collections clientside, and then posting to server without AJAX?

My Customer model has many Orders. I am collecting the data for multiple Orders 开发者_高级运维clientside using jQuery.

What data structure is best for storing the Order collection clientside whilst I am building it?

How can I then submit this collection back to the server WITHOUT using ajax? Just when the user has finished building the Order collection and submits the form normally back to the server?

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It's well presented here:

http://railscasts.com/episodes/196-nested-model-form-part-1

See episode 2 if needed:

http://railscasts.com/episodes/197-nested-model-form-part-2