function rdf_process

Template process function for adding extra tags to hold RDFa attributes.

Since template files already have built-in support for $attributes, $title_attributes, and $content_attributes, and field templates have support for $item_attributes, we try to leverage those as much as possible. However, in some cases additional attributes are needed not covered by these. We deal with those here.

File

modules/rdf/rdf.module, line 455

Code

function rdf_process(&$variables, $hook) {
    // Handles attributes needed for content not covered by title, content,
    // and field items. It does this by adjusting the variable sent to the
    // template so that the template doesn't have to worry about it. See
    // theme_rdf_template_variable_wrapper().
    if (!empty($variables['rdf_template_variable_attributes_array'])) {
        foreach ($variables['rdf_template_variable_attributes_array'] as $variable_name => $attributes) {
            $context = array(
                'hook' => $hook,
                'variable_name' => $variable_name,
                'variables' => $variables,
            );
            $variables[$variable_name] = theme('rdf_template_variable_wrapper', array(
                'content' => $variables[$variable_name],
                'attributes' => $attributes,
                'context' => $context,
            ));
        }
    }
    // Handles additional attributes about a template entity that for RDF parsing
    // reasons, can't be placed into that template's $attributes variable. This
    // is "meta" information that is related to particular content, so render it
    // close to that content.
    if (!empty($variables['rdf_metadata_attributes_array'])) {
        if (!isset($variables['content']['#prefix'])) {
            $variables['content']['#prefix'] = '';
        }
        $variables['content']['#prefix'] = theme('rdf_metadata', array(
            'metadata' => $variables['rdf_metadata_attributes_array'],
        )) . $variables['content']['#prefix'];
    }
}