function private_files_download_permission_install in Private files download permission 7.2

Implements hook_install().

File

./private_files_download_permission.install, line 80

Installs, updates and uninstalls module variables and settings.

Code

function private_files_download_permission_install() {
  $transaction = db_transaction();
  try {

    // Add "real" foreign keys.
    db_query('ALTER TABLE {private_files_download_permission_directory_user}
      ADD CONSTRAINT {private_files_download_permission_directory_2}
      FOREIGN KEY (did) REFERENCES {private_files_download_permission_directory} (did)
      ON DELETE CASCADE
      ON UPDATE CASCADE');
    db_query('ALTER TABLE {private_files_download_permission_directory_user}
      ADD CONSTRAINT {private_files_download_permission_directory_user}
      FOREIGN KEY (uid) REFERENCES {users} (uid)
      ON DELETE CASCADE
      ON UPDATE CASCADE');
    db_query('ALTER TABLE {private_files_download_permission_directory_role}
      ADD CONSTRAINT {private_files_download_permission_directory}
      FOREIGN KEY (did) REFERENCES {private_files_download_permission_directory} (did)
      ON DELETE CASCADE
      ON UPDATE CASCADE');
    db_query('ALTER TABLE {private_files_download_permission_directory_role}
      ADD CONSTRAINT {private_files_download_permission_directory_role}
      FOREIGN KEY (rid) REFERENCES {role} (rid)
      ON DELETE CASCADE
      ON UPDATE CASCADE');
  } catch (Exception $e) {
    $transaction
      ->rollback();
    $t = get_t();
    drupal_set_message($t('An error occurred while installing the module. Please check the log for details.'), 'error');
  }

  // Set preferences' default values.
  variable_set('private_files_download_permission_by_user_checks', TRUE);
}