Question

我正在处理搜索数据，并希望从控制器发送HTML以使用AJAX进行查看。我收到语法错误。这是我的代码。

function search()
{

 $params['searchKeys'] = $this->input->post('query');
 $params['userID'] = $this->session->userdata('id');

 $storeArray   = $this->Store_model->searchStore($params);
 foreach($storeArray as $store){

  echo "<div class='col-lg-3 col-md-4 col-sm-6 col-xs-12'>
  <div class='store-block'>
  <img class='img-responsive' src=".getImageURL($s['image'], array( 'alt' => '' )).">
  <div class='overlay'>
  <h2>".$s['storeName']."</h2>".if($this->session->userdata('userType') == '2'):.

  .if($s['isBlocked'] == '1'):.
  "<a class='info'>Your store is blocked!</a>
  ".else:."
  <a class='info' href=".site_url('Store/preview/'.encode($s['storeID'])).">Preview</a>
  <a class='info' href=".site_url('Slot/index/'.encode($s['storeID'])).">Slots</a>
  <a class='info' href=".site_url('Booking/index/'.encode($s['storeID'])).">Bookings</a>
  <a class='info' href=".site_url('Store/edit/'.encode($s['storeID'])).">Edit</a>
  <a class='info' href='#'data-toggle='modal' data-target='#confirm-".$s['storeID'].">Delete</a>
  ".endif;."

  ".elseif($this->session->userdata('userType') == '1'):."
  <a class='info' href=".site_url('Store/preview/'.encode($s['storeID'])).">Preview</a>
  ".if($s['isBlocked'] == '0'):.
  "<a class='info' href='#' data-toggle='modal' data-target='#confirm-block-".$s['storeID'].">Block</a>
  ".else:."
  <a class='info' href='#' data-toggle='modal' data-target='#confirm-unblock-".$s['storeID'].">Un block</a>
  ".endif.
  .endif."
  </div>
  </div>
  </div>
  </div>
  ";

}
exit;

}

我在这条线上出现错误。

<h2>".$s['storeName']."</h2>".if($this->session->userdata('userType') == '2'):.

Answer 1

该错误是因为未定义$s。您要么必须更改

 foreach($storeArray as $store){

到

  foreach($storeArray as $s){

或将$s['example_key']的每个实例更改为$store['example_key']

但是您仍然会遇到@Bartek评论中描述的问题。

通过使用$this->load->view可以简化整个过程，该操作将为您“回显”视图文件。编写可插入和退出PHP处理器的HTML更易于编写和阅读。此外，它还具有更多用途。

这里是加载视图的控制器。

public function search()
{
  $params['searchKeys'] = $this->input->post('query');
  $params['userID'] = $this->session->userdata('id');

  $viewdata['storeArray'] = $this->Store_model->searchStore($params);
  $this->load->view('store_search_view', $viewdata); 
}

“视图”：/application/views/store_search_view.php

<?php
foreach ($storeArray as $s) :
    $storeID = $s['storeID'];
    $enc_storeID = encode($storeID);
    ?>

    <div class='col-lg-3 col-md-4 col-sm-6 col-xs-12'>
        <div class='store-block'>
            <img class='img-responsive' src=".getImageURL($s['image'], array( 'alt' => '' )).">
            <div class='overlay'>
                <h2><?php echo $s['storeName']; ?></h2>"
                <?php
                if($this->session->userdata('userType') == '2'):
                    if($s['isBlocked'] == '1'):
                        ?>
                        <a class='info'>Your store is blocked!</a>
                        <?php
                    else:
                        ?>
                        <a class='info' href='<?php echo site_url('Store/preview/'.$enc_storeID); ?>'>Preview</a>
                        <a class='info' href='<?php echo site_url('Slot/index/'.$enc_storeID); ?>'>Slots</a>
                        <a class='info' href='<?php echo site_url('Booking/index/'.$enc_storeID); ?>'>Bookings</a>
                        <a class='info' href='<?php echo site_url('Store/edit/'.$enc_storeID); ?>'>Edit</a>
                        <a class='info' href='#' data-toggle='modal' data-target='#confirm-<?= $storeID; ?>'>Delete</a>
                    <?php
                    endif;
                elseif($this->session->userdata('userType') == '1'):
                    ?>
                    <a class='info' href='<?= site_url('Store/preview/'.$enc_storeID); ?>'>Preview</a>
                    <?php if($s['isBlocked'] == '0'): ?>
                        <a class='info' href='#' data-toggle='modal' data-target='#confirm-block-<?= $storeID; ?>'>Block</a>
                    <?php else: ?>
                        <a class='info' href='#' data-toggle='modal' data-target='#confirm-unblock-<?= $storeID; ?>'>Un block</a>
                    <?php
                    endif;
                endif;
                ?>
            </div>
        </div>
    </div>
    <?php
endforeach;

如果您想知道，插入和退出PHP“模式”比连接一个巨大的字符串更有效。在处理PHP和直接输出HTML之间切换时，性能损失为零。

如果您不熟悉语法，则<?= ...与<?php echo ...相同。如果看起来我是在两种语法样式之间随机切换，那是真的。除了一种类型涉及较少的键入外，没有理由将一种类型置于另一种之上。

Answer 2

<h2>".$s['storeName']."</h2>".if($this->session->userdata('userType') == '2'):.

错误来自if（）部分。您不能在echo中使用if（）。相反，您可以将if条件的结果保存到变量中并在echo中显示，也可以将echo放入if（）else块中。

在控制器中连接HTML

2 个答案: