views_element_validate_tags($element, FormStateInterface $form_state)
Validation callback for query tags.
File
- core/modules/views/views.module, line 798
- Primarily Drupal hooks and global API functions to manipulate views.
Code
function views_element_validate_tags($element, FormStateInterface $form_state) { $values = array_map('trim', explode(',', $element['#value'])); foreach ($values as $value) { if (preg_match("/[^a-z_]/", $value)) { $form_state->setError($element, t('The query tags may only contain lower-case alphabetical characters and underscores.')); return; } } }
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