public BookUninstallValidator::validate($module)
Determines the reasons a module can not be uninstalled.
Example implementation:
public function validate($module) {
$entity_types = $this->entityManager->getDefinitions();
$reasons = array();
foreach ($entity_types as $entity_type) {
if ($module == $entity_type->getProvider() && $entity_type instanceof ContentEntityTypeInterface && $this->entityManager->getStorage($entity_type->id())->hasData()) {
$reasons[] = $this->t('There is content for the entity type: @entity_type', array('@entity_type' => $entity_type->getLabel()));
}
}
return $reasons;
}
Parameters
string $module: A module name.
Return value
string[] An array of reasons the module can not be uninstalled, empty if it can. Each reason should not end with any punctuation since multiple reasons can be displayed together.
Overrides ModuleUninstallValidatorInterface::validate
See also
template_preprocess_system_modules_uninstall()
File
- core/modules/book/src/BookUninstallValidator.php, line 51
Class
- BookUninstallValidator
- Prevents book module from being uninstalled whilst any book nodes exist or there are any book outline stored.
Namespace
Drupal\book
Code
public function validate($module) {
$reasons = [];
if ($module == 'book') {
if ($this->hasBookOutlines()) {
$reasons[] = $this->t('To uninstall Book, delete all content that is part of a book');
}
else {
// The book node type is provided by the Book module. Prevent uninstall
// if there are any nodes of that type.
if ($this->hasBookNodes()) {
$reasons[] = $this->t('To uninstall Book, delete all content that has the Book content type');
}
}
}
return $reasons;
}
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