当我转到搜索框并键入特定的卷号时，它会显示我的数据库中的所有数据，而不是我通过卷号输入的数据。我是php和codeigniter的新手。
这是模型：
<?php
class Stud_Model extends CI_Model {
function __construct() {
parent::__construct();
}
public function insert($data) {
if ($this->db->insert("stud", $data)) {
return true;
}
}
public function delete($roll_no) {
if ($this->db->delete("stud", "roll_no = ".$roll_no)) {
return true;
}
}
public function update($data,$old_roll_no) {
$this->db->set($data);
$this->db->where("roll_no", $old_roll_no);
$this->db->update("stud", $data);
}
public function get_results($search_term='default')
{
// Use the Active Record class for safer queries.
$this->db->select('*');
$this->db->from('stud');
$this->db->like('roll_no',$search_term);
// Execute the query.
$query = $this->db->get();
// Return the results.
return $query->result_array();
}
}
?>
控制者：
<?php
class Stud_controller extends CI_Controller {
function __construct() {
parent::__construct();
$this->load->helper('url');
$this->load->helper('form');
$this->load->database(); //manual connection to the database
}
public function index() {
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->helper('form');
$this->load->view('Stud_view',$data);
}
public function add_student_view() {
$this->load->helper('form');
$this->load->view('Stud_add');
}
public function add_student() {
$this->load->model('Stud_Model');
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name'),
'surname' => $this->input->post('surname'),
'mname' => $this->input->post('mname'),
'mobileno' => $this->input->post('mobileno'),
'email' => $this->input->post('email'),
'homeadd' => $this->input->post('homeadd')
);
$this->Stud_Model->insert($data);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function update_student_view() {
$this->load->helper('form');
$roll_no = $this->uri->segment('3');
$query = $this->db->get_where("stud",array("roll_no"=>$roll_no));
$data['records'] = $query->result();
$data['old_roll_no'] = $roll_no;
$this->load->view('Stud_edit',$data);
}
public function update_student(){
$this->load->model('Stud_Model');
$data = array(
'roll_no' => $this->input->post('roll_no'),
'name' => $this->input->post('name'),
'surname' => $this->input->post('surname'),
'mname' => $this->input->post('mname'),
'mobileno' => $this->input->post('mobileno'),
'email' => $this->input->post('email'),
'homeadd' => $this->input->post('homeadd')
);
$old_roll_no = $this->input->post('old_roll_no');
$this->Stud_Model->update($data,$old_roll_no);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function delete_student() {
$this->load->model('Stud_Model');
$roll_no = $this->uri->segment('3');
$this->Stud_Model->delete($roll_no);
$query = $this->db->get("stud");
$data['records'] = $query->result();
$this->load->view('Stud_view',$data);
}
public function execute_search()
{
$this->load->model('Stud_Model');
// Retrieve the posted search term.
$search_term = $this->input->post('search');
// Use a model to retrieve the results.
$data['records'] = $this->Stud_Model->get_results($search_term);
// Pass the results to the view.
$this->load->view('result_view',$data);
}
}
?>
风景：
<!DOCTYPE html>
<html lang = "en">
<head>
<meta charset = "utf-8">
<title>Students Example</title>
</head>
<body>
<a href = "<?php echo base_url(); ?>stud/add_view">Add</a>
<br>
<?php
echo form_open('Stud_controller/execute_search');
echo form_input(array('roll_no'=>'search'));
echo form_submit('search_submit','Submit');
?>
</br>
<br>
<table border = "1">
<?php
$i = 1;
echo "<tr>";
echo "<td>Sr#</td>";
echo "<td>Roll No.</td>";
echo "<td>First Name</td>";
echo "<td>Surname</td>";
echo "<td>Middle Name</td>";
echo "<td>Mobile/Telephone No.</td>";
echo "<td>Email Address</td>";
echo "<td>Home Address</td>";
echo "<td>Edit</td>";
echo "<td>Delete</td>";
echo "<tr>";
?>
<?php foreach($records as $r) {
echo "<tr>";
echo "<td>".$i++."</td>";
echo "<td>".$r->roll_no."</td>";
echo "<td>".$r->name."</td>";
echo "<td>".$r->surname."</td>";
echo "<td>".$r->mname."</td>";
echo "<td>".$r->mobileno."</td>";
echo "<td>".$r->email."</td>";
echo "<td>".$r->homeadd."</td>";
echo "<td><a href = '".base_url()."stud/edit/".$r->roll_no."'>Edit</a></td>";
echo "<td><a href = '".base_url()."stud/delete/".$r->roll_no."'>Delete</a></td>";
echo "<tr>";
}
?>
</table>
</body>
</html>
以及搜索框的结果视图：
<!DOCTYPE html>
<head>
<table border = "1">
<?php
echo "<tr>";
echo "<td>Roll No.</td>";
echo "<td>First Name</td>";
echo "<td>Surname</td>";
echo "<td>Middle Name</td>";
echo "<td>Mobile/Telephone No.</td>";
echo "<td>Email Address</td>";
echo "<td>Home Address</td>";
echo "<tr>";
?>
<?php foreach($records as $r) {
echo "<tr>";
echo "<td>".$r['roll_no']."</td>";
echo "<td>".$r['name']."</td>";
echo "<td>".$r['surname']."</td>";
echo "<td>".$r['mname']."</td>";
echo "<td>".$r['mobileno']."</td>";
echo "<td>".$r['email']."</td>";
echo "<td>".$r['homeadd']."</td>";
echo "<tr>";
}
?>
</table>
</head>
</html>
例如，如果我在搜索框中输入1，它将显示所有数据，如下所示：
Sr# Roll No. First Name Surname Middle Name Mobile/Telephone No. Email Address Home Address
1 1 Charles Xavier Howlett 1234567891011 [email protected] 9912 east street
2 2 Nancy Hopkins Johnson 09108873512 [email protected] 3628 north street
而不是仅显示第一卷。
您的输入搜索表单上有一个错误的参数，如果您提供一个数组作为参数，它将生成一个name => value属性对。
因此，您可以将搜索表单视图更改为：
...
<?php
echo form_open('Stud_controller/execute_search');
echo form_input(array('name'=>'search'));
echo form_submit('search_submit','Submit');
?>
...