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Masterpages for CodeIgniter

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Derek Jones edited this page Jul 5, 2012 · 6 revisions

Category:Library:Views Category:Library:Community

Note: This is a PHP5 library.

application/libraries/MasterPage.php

<?php if ( ! defined ( 'BASEPATH' ) ) exit ( 'No direct script access allowed.' );
/**
 * @author Kim Johansson <hagbarddenstore@gmail.com>
 * @copyright Copyright (c) 2008, Kim Johansson
 *
 * @version 0.0.1
 */
class MasterPage {
    private $masterPage = '';
    private $contentPages = array ( );
    private $ci = null;

    /**
     * @access public
     * @param string $masterPage Optional file to use as MasterPage.
     */
    public function __construct ( $masterPage = '' ) {
        $this->CI = get_instance ( );
        if ( ! empty ( $masterPage ) )
            $this->setMasterPage ( $masterPage );
    }

    /**
     * @access public
     * @param string $masterPage File to use as MasterPage.
     */
    public function setMasterPage ( $masterPage ) {
        // Check if the supplied masterpage exists.
        if ( ! file_exists ( APPPATH . 'views/' . $masterPage . EXT ) )
            throw new Exception ( APPPATH . 'views/' . $masterPage . EXT );
        $this->masterPage = $masterPage;
    }

    /**
     * @access public
     * @return string The current MasterPage.
     */
    public function getMasterPage ( ) {
        return $this->masterPage;
    }

    /**
     * @access public
     * @param string $file The view file to add.
     * @param string $tag The tag in the MasterPage it should match.
     * @param mixed $content The content to be used in the view file.
     */
    public function addContentPage ( $file, $tag, $content = array ( ) ) {
        $this->contentPages[$tag] = $this->CI->load->view ( $file, $content, true );
    }

    /**
     * @access public
     * @param array $content Optional content to be added to the MasterPage.
     */
    public function show ( $content = array ( ) ) {
        // Get the content of the MasterPage and replace all matching tags with their
        // respective view file content.
        $masterPage = $this->CI->load->view ( $this->masterPage, $content, true );
        foreach ( $this->contentPages as $tag => $content ) {
            $masterPage = str_replace ( '<mp:' . ucfirst ( strtolower ( $tag ) ) . ' />',
            $content, $masterPage );
        }

        // Finally, print the data.
        echo $masterPage;
    }
}
?&gt;

**Usage: **

In the controller:

class MyController extends Controller {
    public function __construct ( ) {
        parent::__construct ( );
        $this->load->library ( 'masterpage' );
    }

    public function index ( ) {
        $this->masterpage->setMasterPage ( 'masterpage_default' );
        // content_index is the view file to use.
        // content is the tag in the masterpage file we want to replace.
        $this->masterpage->addContentPage ( 'content_index', 'content' );

        // Show the masterpage to the world!
        $this->masterpage->show ( );
    }
}

The masterpage: application/views/masterpage_default.php

&lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;&lt;/title>
    &lt;/head&gt;

    &lt;body&gt;
&lt;!-- MasterPage tags must be capitalized and rest lowercase. --&gt;
<mp:Content />
    &lt;/body&gt;
&lt;/html&gt;

The viewfile: application/views/content_index.php

        <h1>Hello world!</h1>

That's about it, if you want to know more, just email me at hagbarddenstore at gmail dot com.

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