我有两个foreach声明。来自一个的变量以某种方式进入另一个,我不知道如何解决它。
这是我的控制器:
// Categories Page Code
function categories($id)
{
$this->load->model('Business_model');
$data['businessList'] = $this->Business_model->categoryPageList($id);
$data['catList'] = $this->Business_model->categoryList();
$data['featured'] = $this->Business_model->frontPageList();
$data['user_id'] = $this->tank_auth->get_user_id();
$data['username'] = $this->tank_auth->get_username();
$data['page_title'] = 'Welcome To Jerome - Largest Ghost Town in America';
$data['page'] = 'category_view'; // pass the actual view to use as a parameter
$this->load->view('container',$data);
}
类别只会显示特定类别的商家。
使用categoryPageList($ id)函数从数据库中提取业务。
这是该功能:
function categoryPageList($id) {
$this->db->select('b.id, b.busname, b.busowner, b.webaddress, p.thumb, v.title, c.catname, s.specname, p.thumb, c.id');
$this->db->from ('business AS b');
$this->db->where('b.category', $id);
$this->db->join('photos AS p', 'p.busid = b.id', 'left');
$this->db->join('video AS v', 'v.busid = b.id', 'left');
$this->db->join('specials AS s', 's.busid = b.id', 'left');
$this->db->join('category As c', 'b.category = c.id', 'left');
$this->db->group_by("b.id");
return $this->db->get();
}
以下是观点:
<h2>Welcome to Jerome, Arizona</h2>
<p>Choose the Category of Business you are interested in:<br/> <?php foreach ($catList->result() as $row): ?>
<a href="/site/categories/<?=$row->id?>"><?=$row->catname?></a>,
<?php endforeach; ?></p>
<table id="businessTable" class="tablesorter">
<thead><tr><th>Business Name</th><th>Business Owner</th><th>Web</th><th>Photos</th><th>Videos</th><th>Specials</th></tr></thead>
<?php if(count($businessList) > 0) : foreach ($businessList->result() as $crow): ?>
<tr>
<td><a href="/site/business/<?=$crow->id?>"><?=$crow->busname?></a></td>
<td><?=$crow->busowner?></td>
<td><a href="<?=$crow->webaddress?>">Visit Site</a></td>
<td>
<?php if(isset($crow->thumb)):?>
yes
<?php else:?>
no
<?php endif?>
</td>
<td>
<?php if(isset($crow->title)):?>
yes
<?php else:?>
no
<?php endif?>
</td>
<td>
<?php if(isset($crow->specname)):?>
yes
<?php else:?>
no
<?php endif?>
</td>
</tr>
<?php endforeach; ?>
<?php else : ?>
<td colspan="4"><p>No Category Selected</p></td>
<?php endif; ?>
</table>
问题出现在这里。 <?=$crow->id?>
应显示业务表中的行ID。相反,它显示了类别表的行ID。所以,如果我正在查看/ site / categories / 6 <?=$crow->id?>
将显示6何时应该显示10(此时该类别中唯一商家的行ID。
我该如何解决这个问题?
答案 0 :(得分:2)
categoryPageList 中的SELECT子句包含两个id列;业务和类别表的。因此,您只需获取业务ID。
$this->db->select('b.id, b.busname, b.busowner, b.webaddress, p.thumb, v.title, c.catname, s.specname, p.thumb, c.id');
删除b.id
应该可以解决问题。
$this->db->select('b.busname, b.busowner, b.webaddress, p.thumb, v.title, c.catname, s.specname, p.thumb, c.id');
如果您需要两个值,请为它们添加别名。
$this->db->select('b.id business_id, b.busname, b.busowner, b.webaddress, p.thumb, v.title, c.catname, s.specname, p.thumb, c.id category_id');