Template Library Version 1.4.1

[eluser]JoeWS[/eluser]
EDIT: Solved
I am new to using hooks and didn't realize I needed this one important line:

Code:

$CI->output->_display();

Oops! Sorry if anyone read all the way through my post

---

I am having some issues with using the display_override hook. I get an error: "Cannot render the 'header' region. The region is undefined." when I try to set the header region.

Here is what I am trying to accomplish:
Whatever gets output by my application will get buffered and then sent to the 'content' region using Template Library 1.4.1. If the 'header' region is empty, I use the default header view for the 'header' region. If the 'footer' region is empty, I use the default footer view for the 'footer' region.

My main files are listed below. The application is basically going to be an interactive site. The application name has been obfuscated.


application/config/config.php

Code:

$config['enable_hooks'] = TRUE;

application/config/hooks.php

Code:

$hook['display_override'] = array(
                                'class'    => 'Display',
                                'function'    => 'renderTemplate',
                                'filename'    => 'Display.php',
                                'filepath'    => 'hooks',
                            );

application/config/template.php

Code:

$template['active_template'] = 'default';

$template['default']['template'] = 'index';
$template['default']['regions'] = array(
   'title',
   'header',
   'content',
   'footer',
   'sidebar_right',
   'sidebar_left',
);
$template['default']['parser'] = 'parser';
$template['default']['parser_method'] = 'parse';
$template['default']['parse_template'] = FALSE;

application/hooks/Display.php

Code:

<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

class Display
{
    var $CI                = null;
    
    function Display()
    {
        $this->CI =& get_instance();
    }
    
    function renderTemplate()
    {
        $this->CI->load->library('template');
        
        $template =& $this->CI->template;
        
        // Check if we need to use a template other than the default
        if ( $this->CI->input->get('feed', FALSE) ) {
            // Use the RSS Feed template
            $template->set_template('rss');
        }
        
        // Add Overall Stylesheet
        $template->add_css('media/css/myapp.css');
        
        // Add JQuery from Google CDN
        $template->add_js('http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js');
        
        // Add Overall JavaScript
        $template->add_js('media/js/myapp.js');
        
        
        
        // Get Region Data
        $this->getHeader($template);
        
        $this->getContent($template);
        
        $this->getSidebars($template);
        
        $this->getFooter($template);
        
        // Render the template
        $template->render();
    }
    
    /**
     * Get the page header
     */
    private function getHeader( &$template )
    {
        $header_data = $template->render('header', true);
        
        if ( ! is_string($header_data) || strlen(trim($header_data)) == 0 ) {
            $overwrite = FALSE;
            $data      = NULL;
            
            // Use Default Header
            $template->write_view('header', 'default_header', $data, $overwrite);
        }
    }
    
    /**
     * Get the main content
     */
    private function getContent( &$template )
    {
        $content  =  $this->CI->output->get_output();
        
        $template->write('content', $content);
    }
    
    /**
     * Get the left and/or right sidebars
     */
    private function getSidebars( &$template )
    {
        // TODO: Get Left and Right Sidebar
    }
    
    /**
     * Get the page footer
     */
    private function getFooter( &$template )
    {
        $footer_data = $template->render('footer', true);
        
        if ( ! is_string($footer_data) || strlen(trim($footer_data)) == 0 ) {
            $overwrite = FALSE;
            $data      = NULL;
            
            // Use Default Footer
            $template->write_view('footer', 'default_footer', $data, $overwrite);
        }
    }
    
}

application/views/default_header.php

Code:

<h1>My App</h1>

application/views/default_footer.php

Code:

<p>&copy;&nbsp;2011 My App</p>