I need some help with pagination and the link_to in the view.

I'm trying to include a hash in the pagination link_to params and it 
keeps flattening out my hash.

Example:
Here's my hash called @answer:
  "answer"=>{"6"=>"9bf31c7ff062936a96d3c8bd1f8f2ff3",
           "7"=>"6f4922f45568161a8cdf4ad2299f6d23"}

Here's the code in my view for my pagination link:
  	<%= link_to('next', {:params => 'answer' => @answer, 
params.merge('page' => object_pages.current.previous,)}) + ' ' if 
object_pages.current.previous %>

See how the link_to doesn't maintain the actual hash:
<a 
href="/student_portal/evaluate_exam/7?commit=Submit+Test&amp;answer=69bf31c7ff062936a96d3c8bd1f8f2ff376f4922f45568161a8cdf4ad2299f6d23&amp;page=2">next</a>&nbsp;

Anyone know how I can pass a hash intact through a link_to ?

Thanks a ton!

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