我有一个使用烘焙脚本烘焙的简单 cakephp 2.x 应用程序。两个主要表格是条件和药物。条件 HABTM 药物，反之亦然。我试图在条件索引中显示属于条件的药物，基本列出所有条件，但只列出那些药物。我试过这样做，在逗号分隔的列表中显示属于某个条件的药物，该列表适用于另一个 1.3 应用程序：
<?php
$condition_drugs = '';
foreach($condition['Drug'] as $drug):
$condition_drugs .= $drug['drug'] . ', ';
//echo $drug['generic'];
endforeach;
//echo substr($condition_drugs, 0, -2);
echo $condition_drugs;
?>
但它给出了以下两个错误：未定义的索引：药物 [APP/View/Conditions/index.ctp，第 22 行]，以及为 foreach() 提供的无效参数 [APP/View/Conditions/index.ctp，第 22 行]
我还在这里查看了另一篇文章，该文章建议以类似的方式进行操作。我的代码有问题吗？我需要根据 ID 在我的模型中查找吗？这是完整的索引视图代码和控制器：
看法：
<div class="conditions index">
<h2><?php echo __('Conditions'); ?></h2>
<table cellpadding="0" cellspacing="0">
<tr>
<th><?php echo $this->Paginator->sort('condition'); ?></th>
<th><?php echo $this->Paginator->sort('principles'); ?></th>
<th><?php echo $this->Paginator->sort('treatment'); ?></th>
<th><?php echo $this->Paginator->sort('clinical_tips'); ?></th>
<th>Drugs</th>
<th class="actions"><?php echo __('Actions'); ?></th>
</tr>
<?php
foreach ($conditions as $condition): ?>
<tr>
<td><?php echo h($condition['Condition']['condition']); ?> </td>
<td><?php echo h($condition['Condition']['principles']); ?> </td>
<td><?php echo h($condition['Condition']['treatment']); ?> </td>
<td><?php echo h($condition['Condition']['clinical_tips']); ?> </td>
<td>
<?php
$condition_drugs = '';
foreach($condition['Drug'] as $drug):
$condition_drugs .= $drug['drug'] . ', ';
//echo $drug['generic'];
endforeach;
//echo substr($condition_drugs, 0, -2);
echo $condition_drugs;
?>
</td>
<td class="actions">
<?php echo $this->Html->link(__('View'), array('action' => 'view', $condition['Condition']['id'])); ?>
<?php echo $this->Html->link(__('Edit'), array('action' => 'edit', $condition['Condition']['id'])); ?>
<?php echo $this->Form->postLink(__('Delete'), array('action' => 'delete', $condition['Condition']['id']), null, __('Are you sure you want to delete # %s?', $condition['Condition']['id'])); ?>
</td>
</tr>
<?php endforeach; ?>
</table>
<p>
<?php
echo $this->Paginator->counter(array(
'format' => __('Page {:page} of {:pages}, showing {:current} records out of {:count} total, starting on record {:start}, ending on {:end}')
));
?> </p>
<div class="paging">
<?php
echo $this->Paginator->prev('< ' . __('previous'), array(), null, array('class' => 'prev disabled'));
echo $this->Paginator->numbers(array('separator' => ''));
echo $this->Paginator->next(__('next') . ' >', array(), null, array('class' => 'next disabled'));
?>
</div>
</div>
<div class="actions">
<h3><?php echo __('Actions'); ?></h3>
<ul>
<li><?php echo $this->Html->link(__('New Condition'), array('action' => 'add')); ?></li>
</ul>
</div>
控制器：
<?php
App::uses('AppController', 'Controller');
/**
* Conditions Controller
*
* @property Condition $Condition
*/
class ConditionsController extends AppController {
/**
* index method
*
* @return void
*/
public function index() {
$this->set('title_for_layout','Condition Index');
$this->Condition->recursive = 0;
$this->set('conditions', $this->paginate());
}
/**
* view method
*
* @throws NotFoundException
* @param string $id
* @return void
*/
public function view($id = null) {
$this->Condition->id = $id;
if (!$this->Condition->exists()) {
throw new NotFoundException(__('Invalid condition'));
}
$this->set('condition', $this->Condition->read(null, $id));
}
/**
* add method
*
* @return void
*/
public function add() {
if ($this->request->is('post')) {
$this->Condition->create();
if ($this->Condition->save($this->request->data)) {
$this->Session->setFlash(__('The condition has been saved'));
$this->redirect(array('action' => 'index'));
} else {
$this->Session->setFlash(__('The condition could not be saved. Please, try again.'));
}
}
$drugs = $this->Condition->Drug->find('list',array('fields'=>array('id','generic')));
$this->set(compact('drugs'));
}
/**
* edit method
*
* @throws NotFoundException
* @param string $id
* @return void
*/
public function edit($id = null) {
$this->Condition->id = $id;
if (!$this->Condition->exists()) {
throw new NotFoundException(__('Invalid condition'));
}
if ($this->request->is('post') || $this->request->is('put')) {
if ($this->Condition->save($this->request->data)) {
$this->Session->setFlash(__('The condition has been saved'));
$this->redirect(array('action' => 'index'));
} else {
$this->Session->setFlash(__('The condition could not be saved. Please, try again.'));
}
} else {
$this->request->data = $this->Condition->read(null, $id);
}
$drugs = $this->Condition->Drug->find('list',array('fields'=>array('id','generic')));
$this->set(compact('drugs'));
}
/**
* delete method
*
* @throws MethodNotAllowedException
* @throws NotFoundException
* @param string $id
* @return void
*/
public function delete($id = null) {
if (!$this->request->is('post')) {
throw new MethodNotAllowedException();
}
$this->Condition->id = $id;
if (!$this->Condition->exists()) {
throw new NotFoundException(__('Invalid condition'));
}
if ($this->Condition->delete()) {
$this->Session->setFlash(__('Condition deleted'));
$this->redirect(array('action' => 'index'));
}
$this->Session->setFlash(__('Condition was not deleted'));
$this->redirect(array('action' => 'index'));
}
}