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書名： Programming with CodeIgniterMVC
作者名： Eli Orr Yehuda Zadik
本章字數： 226字
更新時間： 2021-08-06 16:48:04

Example 2 – passing the complex parameters to a view

In this example, we will show you how to pass and use complex parameters, such as arrays and object arrays, from the CI controller to the rendered CI view to be used in the view. You can pass any number of arrays as parameters to a view; you can also pass objects, such as rows of a query result.

A standard GET parameters URI looks like this: http://ourdomain.com/index.php/example2/more/?a=1&b=2&c=3.

However, let's remember that in CI the URI is passed in this manner: http://ourdomain.com/index.php/example2/more/1/2/3. For more information, see Chapter 2, Configurations and Naming Conventions.

Looking at the URI, we will build the controller example2.php with the function named more with the three parameters passed to it.

We will build the following two scripts:

The controller class: application/controllers/example2.php
The view script : application/views/ example2more.php

The controller file

The controller is responsible for rendering the view with parameters such as mega title and message.

The following is the code sample of the controller:

<?php 
class Example2 extends CI_Controller {
  //This function gets parameters and passes them to the view//example2more
  //The example url//http://ourdomain.com/index.php/example2/more/1/2/3
  so $a = 1, $b = 2, $c = 3
  public function more($a, $b, $c)
  {
    // The parameters in $view_params are extracted in the view//example2more.php
    // In this example 2 variables will be generated by CI in the//view page example2more.php
    //variable: $mega_title, value: Codeigniter, Passing//url parameters to view
    variable: $rows, value: array('a' => $a, 'b' => $b, 'c' => $c);
    $rows = array('a' => $a, 'b' => $b, 'c' => $c);
    $view_params = array('mega_title' => 'Codeigniter -  Passing url parameters to view 'rows' => $rows);
 $this->load->view('example2more', $view_params);
    }   }// closing the class definition/* End of file welcome.php

The view file

The following is the corresponding rendered view:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title><?php echo $mega_title ?></title>
</head>
<body>
<table>
<tr>
  <td>Key</td>
  <td>Value</td>
</tr>
<?php foreach ($rows as $key => $value): ?>
<tr>
  <td><?php echo $key ; ?></td>
  <td><?php echo $value ; ?></td>
</tr> 
<?php endforeach; ?>
</table>
</body>
</html>

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Programming with CodeIgniterMVC

Example 2 – passing the complex parameters to a view

The controller file

The view file