php - How to add Cash on Delivery fee to opencart? -


i'm trying add fee "cash on delivery" module (within payments). have added fields cost , tax_class_id in database , in form.

the cost appears in checkout form, how add cost total of cart?

i have controllers , found totals of checkout calculated piece of code:

$totals = array(); $taxes = $this->cart->gettaxes(); $total = 0;  $total_data = array(     'totals' => &$totals,     'taxes'  => &$taxes,     'total'  => &$total );

by output result of $total_data this:

array (     [totals] => array         (             [0] => array                 (                     [code] => sub_total                     [title] => sub-total                     [value] => 25                     [sort_order] => 1                 )              [1] => array                 (                     [code] => shipping                     [title] => lift on store                     [value] => 0                     [sort_order] => 3                 )              [2] => array                 (                     [code] => tax                     [title] => tax                     [value] => 5.75                     [sort_order] => 5                 )              [3] => array                 (                     [code] => total                     [title] => total                     [value] => 30.75                     [sort_order] => 9                 )          )      [taxes] => array         (             [88] => 5.75         )      [total] => 30.75 )

i manage add line totals doing:

if($_post['payment_method'] == 'cod') {     $method = $this->model_extension_payment_cod->getmethod($_session['address'], $total);      $totals[] = array('code' => 'cod', 'title' => $method['title'], 'value' => $method['text'], 'sort_order' => 4); }

but need update checkout total. if try call again code calculates taxes after code, nothing happens.

$totals = array(); $taxes = $this->cart->gettaxes(); $total = 0;  $total_data = array(     'totals' => &$totals,     'taxes'  => &$taxes,     'total'  => &$total );


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