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07-16-2007, 04:41 AM

[eluser]Al James[/eluser]
Hi there...

Here is the 'Sparks.php' library.

As well as two-stage caching, this library also solves the view within a view problem commonly experienced with 'templated' webpages. You set a 'template' view file and also a 'content' view file (the template one is optional though). In your template you use the helper 'sparks_content()' as a placemarker where the content file should be inserted. You can also include views within views using the 'sparks_include($view_file)' helper.

Usage (Controller):

Code:
class Test extends Controller {

    function index()

    {

        $this->load->library('Sparks');

        //$this->import->library('com.purplesagelabs.template.Sparks');

        //     Set template and content files. Set time to live to 5 seconds.

        $this->sparks->template('template.php')->content('content.php')->ttl(5);

        //    Calculate data for non-cacheable content

        $this->sparks->set('username', 'Al James'); //Would be get username from session or whatever

        $this->sparks->set('view_time', time());

        // Check for cached version of page, if its there display it and return

        if ($this->sparks->is_cached()) return $this->sparks->display();

        //Otherwise, generate cacheable content

        $this->sparks->set('headline', 'Welcome to Sparks!');

        $this->sparks->set('generate_time', time());

        // Store and display the page

        $this->sparks->store()->display();

    }

}

Usage (template file)

Code:
&lt;html&gt;

&lt;body&gt;

    <h1>Template header!</h1>

    &lt;?php sparks_content(); ?&gt;

&lt;/body&gt;

&lt;/html&gt;

Usage (content file)

Code:
<h4>Content file. Todays headline: &lt;?= $headline ?&gt;</h4>

Username <$?= $username ?$> <br/>

Cache file generated at: &lt;?= $generate_time ?&gt;, this page generated at: <$?= $view_time ?$>