Determines the reasons a module can not be uninstalled.

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

File

core/modules/book/src/BookUninstallValidator.php, line 53

Class

BookUninstallValidator

Prevents book module from being uninstalled under certain conditions.

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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