Codeigniter上的双重表格提交

Question

我使用codeigniter，我有双表单提交问题。我在2-3天前在google上寻找了一个解决方案，但我还是找不到。有人能帮助我吗？

shopping_cart.php

<?php

echo anchor("user/item_all", "Continue to shopping", array(
    'class' => 'btn btn-info'
));
if ($this->cart->total_items() > 0):
       if ($return_checkout) {
                echo anchor("user/checkout", "Checkout", array(
                    'class' => 'btn btn-success pull-right',
                    'style' => "margin-left: 10px",


                ));
        }

        echo anchor("user/destroy_cart", "Delete All Cart", array(
            'class' => 'btn btn-danger',
            'style' => "margin: 0px 10px"
        ));
        echo form_button(array(
            'type' => 'submit',
            'class' => 'btn btn-primary pull-right',
            'style' => "margin: 0px 10px",
            'content' => "Update Cart"
        ));
endif;
?>

user.php的

function checkout() {

    $return_checkout = $this->session->userdata('poin') >= $this->cart->total() ? TRUE : FALSE;
    $cart = $this->cart->contents();
    if ($return_checkout AND count($cart) > 0) {
        if ($this->mall->checkout($cart)) {

            $this->cart->destroy();
            redirect('user/shop_history');
        }
    }else
        redirect('user/shop_history');
    }

我希望有人可以帮助我。提前谢谢！