template_preprocess_block(&$variables)
Prepares variables for block templates.
Default template: block.html.twig.
Prepares the values passed to the theme_block function to be passed into a pluggable template engine. Uses block properties to generate a series of template file suggestions. If none are found, the default block.html.twig is used.
Most themes use their own copy of block.html.twig. The default is located inside "core/modules/block/templates/block.html.twig". Look in there for the full list of available variables.
Parameters
array $variables: An associative array containing:
- elements: An associative array containing the properties of the element. Properties used: #block, #configuration, #children, #plugin_id.
File
- core/modules/block/block.module, line 214
- Controls the visual building blocks a page is constructed with.
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | function template_preprocess_block(&$variables) { $variables['configuration'] = $variables['elements']['#configuration']; $variables['plugin_id'] = $variables['elements']['#plugin_id']; $variables['base_plugin_id'] = $variables['elements']['#base_plugin_id']; $variables['derivative_plugin_id'] = $variables['elements']['#derivative_plugin_id']; $variables['label'] = !empty($variables['configuration']['label_display']) ? $variables['configuration']['label'] : ''; $variables['content'] = $variables['elements']['content']; // A block's label is configuration: it is static. Allow dynamic labels to be // set in the render array. if (isset($variables['elements']['content']['#title']) && !empty($variables['configuration']['label_display'])) { $variables['label'] = $variables['elements']['content']['#title']; } // Create a valid HTML ID and make sure it is unique. if (!empty($variables['elements']['#id'])) { $variables['attributes']['id'] = Html::getUniqueId('block-' . $variables['elements']['#id']); } // Proactively add aria-describedby if possible to improve accessibility. if ($variables['label'] && isset($variables['attributes']['role'])) { $variables['title_attributes']['id'] = Html::getUniqueId($variables['label']); $variables['attributes']['aria-describedby'] = $variables['title_attributes']['id']; }} |
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