Duplicated fields in hosted_order_form

[jonnyjava]

Using the hash you give as example in the readme (fixing little typo in shipping_method which should be shipping_methods) I tryed to do OpenPayU.hosted_order_form(order) but the result is not what I expected. As you can see below all the keys are repeated once camelized and once not. This makes the POST fail.

<form action="https://secure.payu.com/api/v2/order" method="post">
<input type="hidden" value="1000" name="total_amount">
<input type="hidden" value="http://localhost/continue" name="continue_url">
<input type="hidden" value="{ba8ff33b-0b32-42e4-b61d-2dcdacba3d7f}" name="req_id">
<input type="hidden" value="http://localhost/notify" name="notify_url">
<input type="hidden" value="http://localhost/order" name="order_url">
<input type="hidden" value="127.0.0.1" name="customer_ip">
<input type="hidden" value="145227" name="merchant_pos_id">
<input type="hidden" value="Order description" name="description">
<input type="hidden" value="PLN" name="currency_code">
<input type="hidden" value="Product 1" name="products.products.name[0]">
<input type="hidden" value="1000" name="products.products.unitPrice[0]">
<input type="hidden" value="1" name="products.products.quantity[0]">
<input type="hidden" value="1" name="ext_order_id">
<input type="hidden" value="1000" name="totalAmount">
<input type="hidden" value="http://localhost/continue" name="continueUrl">
<input type="hidden" value="{ba8ff33b-0b32-42e4-b61d-2dcdacba3d7f}" name="reqId">
<input type="hidden" value="http://localhost/notify" name="notifyUrl">
<input type="hidden" value="http://localhost/order" name="orderUrl">
<input type="hidden" value="127.0.0.1" name="customerIp">
<input type="hidden" value="145227" name="merchantPosId">
<input type="hidden" value="PLN" name="currencyCode">
<input type="hidden" value="1" name="extOrderId">
<input type="hidden" value="sender=145227;signature=1cef67f5170d2872e6e2c0f7976f1e1a;algorithm=MD5" name="OpenPayu-Signature">
<button formtarget="_blank" type="submit"></button></form>

I think the problem is due this line { k.camelize(:lower) => v.map(&:prepare_keys) } in this class OpenPayU::Models::Model.prepare_keys

I'll submit a fix as I'll be able to find one.