function FileExampleSubmitHandlerHelper::handleFileDelete

Submit handler to delete a file.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

File

modules/file_example/src/FileExampleSubmitHandlerHelper.php, line 328

Class

FileExampleSubmitHandlerHelper

A submit handler helper class for the file_example module.

Namespace

Code

public function handleFileDelete(array &$form, FormStateInterface $form_state) {
    $form_values = $form_state->getValues();
    $uri = $form_values['fileops_file'];
    // Since we don't know if the file is managed or not, look in the database
    // to see. Normally, code would be working with either managed or unmanaged
    // files, so this is not a typical situation.
    $file_object = $this->fileHelper
        ->getManagedFile($uri);
    // If a managed file, use file_delete().
    if (!empty($file_object)) {
        // While file_delete should return FALSE on failure,
        // it can currently throw an exception on certain cache states.
        try {
            // This no longer returns a result code.  If things go bad,
            // it will throw an exception:
            $file_object->delete();
            $this->messenger
                ->addMessage($this->t('Successfully deleted managed file %uri', [
                '%uri' => $uri,
            ]));
            $this->stateHelper
                ->setDefaultFile($uri);
        } catch (\Exception $e) {
            $this->messenger
                ->addMessage($this->t('Failed deleting managed file %uri. Result was %result', [
                '%uri' => $uri,
                '%result' => print_r($e->getMessage(), TRUE),
            ]), 'error');
        }
    }
    else {
        $result = $this->fileSystem
            ->delete($uri);
        if ($result !== TRUE) {
            $this->messenger
                ->addError($this->t('Failed deleting unmanaged file %uri', [
                '%uri' => $uri,
            ]));
        }
        else {
            $this->messenger
                ->addMessage($this->t('Successfully deleted unmanaged file %uri', [
                '%uri' => $uri,
            ]));
            $this->stateHelper
                ->setDefaultFile($uri);
        }
    }
}