Codeigniter - 购物车：不会让我隐藏字段行ID

Question

我试图在我的购物车上获得编辑功能。 我希望它基本上转到一个名为users/view_cart的页面，然后用户选择他们是只更新购物车（更改数量）还是退出（通过交易购买）。

我正在关注的显示在此位置提供的购物车页面：

http://codeigniter.com/user_guide/libraries/cart.html

public function view_cart(){ 
    $this->load->model('purchases_model'); 
    $this->load->model('transactions_model'); 

    $this->load->helper('form'); 
    $this->load->library('form_validation'); 

    $this->form_validation->set_rules('action', 'action', 'required'); 

    $num = $this->cart->total_items(); 

    for($i = 1; $i <= $num; $i++){ 
     $this->form_validation->set_rules($i.'[qty]', 
           'Quantity of the '.$i.'th element of the cart', 
              'required'); 

    } 

    if($this->form_validation->run() === FALSE){ 
     $data['title'] = 'View your cart!'; 
     $this->load->view('templates/LI_header', $data);  
     $this->load->view('users/view_cart'); 
     $this->load->view('templates/LI_footer'); 
    } elseif($this->input->post('action') == 'checkout') { 
     $data['title'] = 'Buy cart!'; 
     $id = $this->session->userdata('uid'); 
     $transactionsData = array(
           'amount' => $this->cart->format_number($this->cart->total()) 
           ); 
     $tid = $this->transactions_model->insert($transactionsData); 

     foreach($this->cart->contents() as $items){ 
      $wsid = $items['id']; 
      $purchaseData = array(
           'wsid' => $wsid, 
           'uid' => $id, 
           'tid' => $tid 
           ); 
      $this->purchases_model->insert($purchaseData); 
     } 

     $this->load->view('templates/LI_header', $data);  
     $this->load->view('users/buy_cart_success'); 
     $this->load->view('templates/LI_footer'); 
     $this->cart->destroy();   
    } else { 
     $data['title'] = 'Edit Cart!'; 

     /* Manual input of the rowid and new quantity work 
     $cartData = array('rowid' => 'c4ca4238a0b923820dcc509a6f75849b','qty'=>5); 
     $this->cart->update($cartData); 
     */ 
     /* 
     for($i = 1; $i <= $num; $i++){ 
      $rowid = $this->input->post($i.'[rowid]'); 
      $newQty = $this->input->post($i.'[qty]'); 
      $cartData = array(
          'rowid' => $rowid, 
          'qty' => $newQty 
          ); 
      $this->cart->update($cartData); 
     } 
     print_r($formData); 
     $this->load->view('templates/LI_header', $data);  
     $this->load->view('users/edit_cart_success'); 
     $this->load->view('templates/LI_footer'); 
    } 
} 

启动view_cart观点：

<?php echo form_open('users/view_cart'); ?> 

<table cellpadding="6" cellspacing="1" style="width:100%" border="0"> 

<?php echo validation_errors(); ?> 

<tr> 
    <th>QTY</th> 
    <th>Item Description</th> 
    <th style="text-align:right">Item Price</th> 
    <th style="text-align:right">Sub-Total</th> 
</tr> 

<?php $i = 1; ?> 

<?php foreach ($this->cart->contents() as $items): ?> 

    <?php echo form_hidden($i.'[rowid]', $items['rowid']); ?> 

    <tr> 
     <td><?php echo form_input(array('name' => $i.'[qty]', 'value' => $items['qty'], 'maxlength' => '3', 'size' => '5')); ?></td> 
     <td> 
     <?php echo $items['name']; ?> 

      <?php if ($this->cart->has_options($items['rowid']) == TRUE): ?> 

       <p> 
        <?php foreach ($this->cart->product_options($items['rowid']) as $option_name => $option_value): ?> 

         <strong><?php echo $option_name; ?>:</strong> <?php echo $option_value; ?><br /> 

        <?php endforeach; ?> 
       </p> 

      <?php endif; ?> 

     </td> 
     <td style="text-align:right"><?php echo $this->cart->format_number($items['price']); ?></td> 
     <td style="text-align:right">$<?php echo $this->cart->format_number($items['subtotal']); ?></td> 
    </tr> 

<?php $i++; ?> 

<?php endforeach; ?> 

<tr> 
    <td colspan="2"> </td> 
    <td class="right"><strong>Total</strong></td> 
    <td class="right">$<?php echo $this->cart->format_number($this->cart->total()); ?></td> 
</tr> 

</table> 
</br> 
<?php echo form_radio('action','update',FALSE); ?> Update your cart 
</br> 
<?php echo form_radio('action','checkout', FALSE) ?> Check out your cart 
</br> 
<p><?php echo form_submit('users/view_cart', 'Process'); ?></p> 

我试着写一些调试代码，但我得到的结果是不确定的。 特别是：

for($i = 1; $i <= $num; $i++){ 
    $this->form_validation->set_rules($i.'[qty]','Quantity of the '.$i.'th element of the cart','required'); 
    $formData[$i]['qty'] = $this->input->post(intval($i).'[qty]'); 
    $formData[$i]['rowid'] = $this->input->post(intval($i).'[rowid]'); 
    } 
    print_r($formData); 

上面代码段的输出：

Array ([1] => Array ([qty] => [rowid] =>) [2] => Array ([qty] => [rowid] =>) [3] => Array ([qty] => [rowid] =>)) 

哪个是奇怪的，因为它似乎映射来自先前行的适当形式的验证“$ I‘[数量]’”。但否则不会从隐藏字段映射正确的数据。

请帮忙！

Answer 1

您正在生成基于数组的表单名称。例如

<input type="hidden" name="1[rowid]" value="1starrthing" />，使你的隐藏表单值后的数据显示为子阵列，像这样：

[1] => Array 
    (
     [rowid] => 1starrthing 
     [qty] => 1 
    ) 

[2] => Array 
    (
     [rowid] => 1starrthing222 
     [qty] => 1 
    ) 

[3] => Array 
    (
     [rowid] => 1starrthing3333 
     [qty] => 1 
    ) 

所以，除非你打算为，请尝试更改隐藏表单名称rowid[]将给你的rowid的数组，像这样：

[rowid] => Array 
    (
     [0] => 1starrthing 
     [1] => 1starrthing222 
     [2] => 1starrthing3333 
    ) 

[1] => Array 
    (
     [qty] => 1 
    ) 

[2] => Array 
    (
     [qty] => 1 
    ) 

[3] => Array 
    (
     [qty] => 1 
    ) 

或预先准备的计数器的名称是这样的：name="rowid_.$i"这将给你：

[rowid_1] => 1starrthing 
[1] => Array 
    (
     [qty] => 1 
    ) 

[rowid_2] => 1starrthing222 
[2] => Array 
    (
     [qty] => 1 
    ) 

[rowid_3] => 1starrthing3333 
[3] => Array 
    (
     [qty] => 1 
    ) 

此外，您的隐藏输入中的值可能为空，除非由于某种原因，您的$ items数组中有'qty'作为每个项目的键。尝试

<?php echo form_hidden('rowid[]', $items); ?> 

要添加调试帮助，请尝试关闭分析;这会给你更多关于帖子/查询和其他内容的信息。

底视图文件：

$this->output->enable_profiler(TRUE);

Answer 2

我不确定这是否与它有任何关系，但在您的set_rules中，$ i。'[qty]'似乎没有关系。如果你想引用数组中的键，那么它需要在括号内引用引号，就像你后面的代码所做的那样：即$i."['qty']"或类似的东西？不确定。问题是，我认为这是代码断开的地方。