hook_preprocess_HOOK(&$variables)
Preprocess theme variables for a specific theme hook.
This hook allows modules to preprocess theme variables for a specific theme hook. It should only be used if a module needs to override or add to the theme preprocessing for a theme hook it didn't define.
For more detailed information, see the Theme system overview topic.
Parameters
$variables: The variables array (modify in place).
Related topics
- Hooks
- Define functions that alter the behavior of Drupal core.
File
- core/lib/Drupal/Core/Render/theme.api.php, line 604
- Hooks and documentation related to the theme and render system.
Code
function hook_preprocess_HOOK(&$variables) { // This example is from rdf_preprocess_image(). It adds an RDF attribute // to the image hook's variables. $variables['attributes']['typeof'] = array('foaf:Image'); }
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