我的控制器：欢迎
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Welcome extends CI_Controller {
public $total;
public function __construct() {
parent::__construct();
$this->load->library('table');
$this->load->model('product_database');
}
public function index() {
$data['show_table'] = $this->view_table();
$this->load->view('welcome_message', $data);
}
public function view_table(){
$result = $this->product_database->show_all_data();
if ($result != false) {
return $result;
} else {
return 'Database is empty !';
}
}
public function AddtoCart(){
$id = $this->input->post('product_id');
$qty = $this->input->post('qty');
$this->db->where('id', $id); // Select where id matches the posted id
$query = $this->db->get('productlist', 1); // Select the products where a match is found and limit the query by 1
foreach ($query->result() as $row)
{
$data = array(
'id' => $id,
'qty' => $qty,
'price' => $row->price,
'name' => $row->name
);
$total=$qty*$row->price;
echo $total;
}
}
}
?>
我的观点：welcome_message
<!DOCTYPE HTML>
<html>
<head>
<title>Product list</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"> </script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"> </script>
<script type="text/javascript">
$(document).ready(function() {
$("#add").click(function(event) {
event.preventDefault();
jQuery.ajax({
type: "POST",
url: "<?php echo base_url(); ?>" + "index.php/Welcome/AddtoCart",
dataType: 'json',
data: {name: },
success: function(res) {
if (res)
{ alert();
// Show Entered Value
jQuery("#total").html(res.total);
}
}
});
});
});
</script>
</head>
<body>
<div class="container">
<div class="message">
<?php
if (isset($read_set_value)) {
echo $read_set_value;
}
if (isset($message_display)) {
echo $message_display;
}
?>
</div>
<div> <?php
if (isset($show_table)) {
echo "<div class='productlist'>";
if ($show_table == 'Database is empty !') {
echo $show_table;
} else {
echo '<h2>Product List</h2><br/><br/>';
?>
<div class="row">
<div class="col-sm-8">
<div class="well">
<div class="table-responsive">
<?php
echo "<table width='98%', >";
echo '<tr><th class="e_id">Id</th><th>ProductName</th> <th>Price</th> <tr/>';
$i=1;
foreach ($show_table as $value) {
?>
<tr class="well" >
<?php
echo "<td width='30%' height='27px'>" . $value->id . "</td>" . "<td width='70%' height='27px'>" . $value->name . "</td>" . "<td height='27px'>" . $value->price . "</td>";
?>
<?php echo form_open('/Welcome/AddtoCart'); ?>
<td><input type="number" name="qty" value="1" style="width:40px;" min="1" max="99"></td>
<input type="hidden" name="product_id" value="<?php echo $value->id ?>" />
<td><input type="submit" value="Add" id="add" width="100%"></td>
<td><input type="submit" value="Rmv" id="rmv" width="100%"></td></br>
<?php echo form_close(); ?>
</tr>
<?php
$i=$i+1;}
echo '</table>';
?>
</div>
</div>
</div>
<div class="col-sm-4">
<div class="well">
<h4>Cart</h4>
Total Rs:<input type="text" value="" id="total"></br><br>
<input type="submit" value="Checkout" id="chk_out">
</div>
</div>
</div>
<?php
}
echo "</div>";
}
?>
</div>
</div>
</body>
</html>
还有我的模特
<?php
if (!defined('BASEPATH'))
exit('No direct script access allowed');
class Product_database extends CI_Model {
public function show_all_data() {
$this->db->select('*');
$this->db->from('productlist');
$query = $this->db->get();
if ($query->num_rows() > 0) {
return $query->result();
} else {
return false;
}
}
}
?>
echo $total
:
$total= array('total'=> $total);
$youarray=array_merge($data, $total);
echo json_econde($youarray,true);