Question

您好我在codeigniter控制器中调用了数据库值并计算了数据库的值并存储在一个新变量中。那么我怎样才能获得数据库值和我在控制器中创建的新变量，因为我想在视图中显示所有数据库值和新计算值。请建议我。

我的控制人员：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>

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;
    }
}

}
?>

Answer 1

代替echo $total，您可以输入以下代码：

 $total= array('total'=> $total); 
 $youarray=array_merge($data, $total);
 echo json_econde($youarray,true);

从控制器检索Ajax数据

1 个答案: