我收到以下错误消息
A PHP Error was encountered
Severity: Notice
Message: Undefined variable: query
Filename: views/home.php
Line Number: 121
回溯：
File: C:\wamp\www\ci\application\views\home.php
Line: 121
Function: _error_handler
File: C:\wamp\www\ci\application\controllers\Home.php
Line: 20
Function: view
File: C:\wamp\www\ci\index.php
Line: 292
Function: require_once
请帮忙！
class Home extends CI_Controller
{
function __construct() {
parent::__construct();
$this->load->database();
$this->load->model("login_model", "getSearch");
if(empty($this->session->userdata('c.contact_id'))) {
$this->session->set_flashdata('flash_data', '<div class="alert alert-warning text-center">Ooops. You don\'t have access!</div>');
redirect('login');
}
}
public function index() {
$this->load->view('home');
}
public function logout() {
$data = ['c.contact_id', 'email'];
$this->session->unset_userdata($data);
redirect('login');
}
function searches(){
$contact_id = $this->session->userdata('c.contact_id');
$data['c.contact_id'] = $contact_id;
$data['query'] = $this->login_model->getSearch($contact_id);
$this->load->view('home', $data);
}
}
类Login_model扩展了CI_Model {
function __construct() {
parent::__construct();
$this->load->database();
}
public function validate_user($data) {
$this->db->distinct();
$this->db->select('c.contact_id, name, email, password, level, c.statusid');
$this->db->from('contact c');
$this->db->join('deliveryreg d', 'c.contact_id = d.idcontact');
$this->db->join('ClientLogin cl', 'cl.idcontact = c.contact_id');
$this->db->where('c.statusid = 1');
$this->db->where('email', $data['email']);
$this->db->where('password', $data['password']);
$query = $this->db->get();
return $query->num_rows();
}
public function getSearch(){
$this->db->distinct();
$this->db->select(" s.id AS 'searchid',s.description as 'searchname',so.id AS 'sourceid',so.description as 'service'");
$this->db->from('contact c');
$this->db->join('deliveryreg d', 'c.contact_id = d.idcontact');
$this->db->join('searchsource ss', 'ss.id = d.idsearchsource');
$this->db->join('search s', 's.id = ss.idsearch');
$this->db->join('source so', 'so.id = ss.idsource');
$this->db->where('c.statusid = 1');
$this->db->where('email');
$ids = array('1','5','8');
$this->db->where_in('so.id', $ids);
$this->db->order_by('s.description', 'so.description');
$query = $this->db->get();
return $query->result();
}
function __destruct() {
$this->db->close();
}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>PEAR | Professional Evaluation And Research</title>
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<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
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<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body class="hold-transition skin-green sidebar-mini" >
<div class="wrapper">
<!-- Main Header -->
<header class="main-header">
<!-- Logo -->
<a href="#" class="logo">
<!-- mini logo for sidebar mini 50x50 pixels -->
<span class="logo-mini"><b>PEAR</b></span>
<!-- logo for regular state and mobile devices -->
<span class="logo-lg"><b>PEAR</b></span>
</a>
<!-- Header Navbar -->
<nav class="navbar navbar-static-top" role="navigation">
<!-- Sidebar toggle button-->
<a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button">
<span class="sr-only">Toggle navigation</span>
</a>
<!-- Navbar Right Menu -->
<div class="navbar-custom-menu">
<ul class="nav navbar-nav">
<!-- Messages: style can be found in dropdown.less-->
<li class="dropdown messages-menu">
<!-- Menu toggle button -->
<a href="#" class="dropdown-toggle" data-toggle="dropdown">
<span>Advanced Filtering</i></span>
</a>
</li>
<li class="dropdown messages-menu">
<!-- Menu toggle button -->
<a href="#" class="dropdown-toggle" data-toggle="dropdown">
<span>Exporting</i></span>
</a>
</li><!-- /.messages-menu -->
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<li class="dropdown notifications-menu">
<!-- Menu toggle button -->
<a href="<?= site_url('home/logout') ?>">
<span><i class="fa fa-sign-out" aria-hidden="true"></i>Logout</span>
</a>
</li>
<!-- Tasks Menu -->
</ul>
</div>
</nav>
</header>
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<aside class="main-sidebar">
<!-- sidebar: style can be found in sidebar.less -->
<section class="sidebar">
<!-- Sidebar user panel (optional) -->
<div class="user-panel">
<div class="pull-left image">
<img src="<?php echo base_url();?>assets/img/user-avatar.png" class="img-circle" alt="User Image">
</div>
<div class="pull-left info">
<p>Hi, there!</p>
<!-- Status -->
<a href="#"><i class="fa fa-circle text-success"></i> Online</a>
</div>
</div>
<!-- Sidebar Menu -->
<ul class="sidebar-menu">
<li class="header">HEADER</li>
<!-- Optionally, you can add icons to the links -->
<li class="treeview">
<a href="#"><i class="active fa fa-search"></i> <span>Searches</span> <i class="fa fa-angle-left pull-right"></i></a>
<?php foreach ($query as $search_row){ ?>
<ul class="treeview-menu">
<li><a href="search">--- Select all ---</a></li>
<li style="padding-left: 10px;"><input type="checkbox"> <span style="color: #fff; "><?php echo $search_row->searchname;?><span></li>
<li style="padding-left: 10px;"><input type="checkbox"> <span style="color: #fff; ">Search B<span></li>
<li style="padding-left: 10px;"><input type="checkbox"> <span style="color: #fff; ">Search C<span></li>
</ul>
<?php }?>
</li>
<!-- <li class="active"><a href="#"><i class="fa fa-link"></i> <span>Searches</span></a>
<ul class="treeview-menu">
<li><a href="#">Link in level 2</a></li>
<li><a href="#">Link in level 2</a></li>
</ul>
</li> -->
<!-- <li><a href="#"><i class="fa fa-link"></i> <span>Another Link</span></a></li> -->
<li class="treeview">
<a href="#"><i class="active fa fa-cog"></i> <span>Services</span> <i class="fa fa-angle-left pull-right"></i></a>
<ul class="treeview-menu">
<li><a href="#">--- Select all ---</a></li>
<li style="padding-left: 10px;"><input type="checkbox"> <span style="color: #fff; ">Print<span></li>
<li style="padding-left: 10px;"><input type="checkbox"> <span style="color: #fff; ">Broadcast<span></li>
<li style="padding-left: 10px;"><input type="checkbox"> <span style="color: #fff; ">Online<span></li>
</ul>
</li>
<li class="treeview">
<a href="#"><i class="fa fa-calendar"></i> <span>Calendar</span></a>
</li>
<li class="treeview">
<a href="#"><i class="fa fa-facebook"></i> <span>Facebook</span></a>
</li>
</ul>
<!-- <div class="sed-icons">
<a href="#"><i class="fa fa-floppy-o " aria-hidden="true" style="padding: 5px;"></i></a>
<a href="#"><i class="fa fa-pencil-square-o " aria-hidden="true"></i></a>
<a href="#"><i class="fa fa-trash " aria-hidden="true" style="padding: 5px;"></i></a>
</div> -->
<!-- /.sidebar-menu -->
</section>
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</aside>
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<div class="content-wrapper" id="myContent" data-spy="scroll" data-target=".my-navbar" data-offset="50">
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<section class="content-header">
<h1 style="padding: 25px; text-align: center;"><i class="fa fa-tachometer" aria-hidden="true"></i>DASHBOARD</h1>
</section
<!-- Main content -->
<section class="content">
<!-- Your Page Content Here -->
<!--Inner navigation-->
<nav class="col-md-2" id="myScrollspy">
<ul class="nav my-navbar">
<li><a href="#tabA" class="active">Overview</a></li>
<li><a href="#tabB">Keystories</a></li>
<li><a href="#tabC">Region</a></li>
<li><a href="#tabD">Media Type</a></li>
<li><a href="#tabE">Byline</a></li>
<li><a href="#tabE">Trends</a></li>
</ul>
</nav>
<div class="col-md-10">
<div class="tab-a" id="tabA">
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sequi labore omnis adipisci nisi quibusdam consequuntur officiis repellendus tempora doloremque eum, maxime, vel, reiciendis consectetur consequatur obcaecati, saepe voluptates. Minus, soluta.</p>
</div>
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<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sequi labore omnis adipisci nisi quibusdam consequuntur officiis repellendus tempora doloremque eum, maxime, vel, reiciendis consectetur consequatur obcaecati, saepe voluptates. Minus, soluta.</p>
</div>
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</div>
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</div>
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<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sequi labore omnis adipisci nisi quibusdam consequuntur officiis repellendus tempora doloremque eum, maxime, vel, reiciendis consectetur consequatur obcaecati, saepe voluptates. Minus, soluta.</p>
</div>
</div>
<!--Inner navigation End-->
</section><!-- /.content -->
</div><!-- /.content-wrapper -->
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<footer class="main-footer">
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</html>
答案 0 :(得分：0)
此处没有任何内容将值传递给查看页面，例如此$ data [＆＃39; query＆＃39;] =＆＃34;＆＃34;;
public function index() {
$data['query']=""; // here you made the mistake, if you want pass any value
$this->load->view('home');
}
如果要传递任何值，否则在home.php视图页面中使用$ query变量。删除它或在视图页面中写入查询并执行。
foreach ($query->result() as $search_row) {
//your functions
}
在foreach循环中使用结果函数$ query-＆gt; result（）
答案 1 :(得分：0)
在你的构造函数中：
$this->load->model("login_model");
/* not: $this->load->model("login_model", "getSearch"); */
/* it just creates an alias for login_model, e.g. $this->getSearch->some_model_method(...) */
由于getSearch是模型中的一种方法，现在可以执行以下操作：
$data['query'] = $this->login_model->getSearch($contact_id);
另请注意，使用index()方法仍会出现未定义的变量错误，因为您没有向$query视图提供home变量。使用当前代码，您只能通过home方法将其提供给searches()视图。我不知道你究竟想要做什么，但一个简单的解决方法是在视图中测试$query的存在：
<?php if($query){ foreach ($query as $search_row){ /* ... */ } } ?>