Friday, March 29, 2024

Customize the – jdoc:include type=head – part

If you use a plain joomla 2.5.x / 3.0.* (for 3.5.* see update below) installation and check the generated source code you can see that the CMS pushed every header line generated by the <jdoc:include type=”head” /> onto a new line. You wish to change that so that your source is more “compressed”. How can you do that?

Joomla 2.5.*:

1.) Copy the file “/libraries/joomla/document/html/renderer/head.php” to your template root folder and name it rendererheader.php.

2.) Edit your index.php and add the following:

require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'rendererheader.php';

Now you can change the output from <jdoc:include type=”head” />. To do that you need to change the source code in the rendererheader.php file. Now change the buffer variable and remove the $tab and $lnEnd variables.

Here is a short example the old line:

$buffer .= $tab . $custom . $lnEnd;

must be changed to:

$buffer .= $custom;

 

Update for Joomla 3.5.*:

Since joomla3.5 the class JDocumentRendererHead is deprecated and replaced with JDocumentRendererHtmlHead. So if you wish to use your Joomla 2.5/3.0 template with Joomla 3.5 you need to modifize yourrendererheader.php file and change JDocumentRendererHead to JDocumentRendererHtmlHead

 

Update for Joomla 3.8.* / 3.9.*:

With joomla 3.8 the /libraries/joomla/document/html/renderer/head.php do no longer exists. Therefore you need the \libraries\src\Document\Renderer\Html\HeadRenderer.php. So to overwrite the header information in Joomla 3.8.x do the following:

1.) Copy the file “\libraries\src\Document\Renderer\Html\HeadRenderer.php” to your template root folder and name it rendererheader.php.

2.) Edit your index.php and add the following:

require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'rendererheader.php';

Now you can change the output from <jdoc:include type=”head” />. To do that you need to change the source code in the rendererheader.php file. Now change the buffer variable and remove the $tab and $lnEnd variables.

Here is a short example the old line:

$buffer .= $tab . '<base href="' . $base . '" />' . $lnEnd;

must be changed to:

$buffer .='<base href="' . $base . '" />';

If you wish to remove the generator meta tag:

<meta name="generator" content="Joomla! - Open Source Content Management" />

Then you need to edit your rendererheader.php you created before and search for the following line and edit them so that will look like:

// Don't add empty generators
//$generator = $document->getGenerator();

//if ($generator)
//{
//$buffer .= $tab . '<meta name="generator" content="' . htmlspecialchars($generator, ENT_COMPAT, 'UTF-8') . '" />' . $lnEnd;
//}

 

Cross reference:
edit the output of jdoc:include type=head via renderer/head.php

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