public function LastLoginBlock::build in Login History 8

Builds and returns the renderable array for this block plugin.

If a block should not be rendered because it has no content, then this method must also ensure to return no content: it must then only return an empty array, or an empty array with #cache set (with cacheability metadata indicating the circumstances for it being empty).

Return value

array A renderable array representing the content of the block.

Overrides BlockPluginInterface::build

See also

\Drupal\block\BlockViewBuilder

File

src/Plugin/Block/LastLoginBlock.php, line 82

Class

LastLoginBlock

Provides a block with information about the user's last login.

Namespace

Drupal\login_history\Plugin\Block

Code

public function build() {
  $build = [];
  $last_login = FALSE;
  if (!$this->currentUser
    ->isAnonymous()) {

    // Get the previous login information.
    $last_login = \Drupal::database()
      ->select('login_history', 'lh')
      ->fields('lh', [
      'login',
      'hostname',
      'one_time',
      'user_agent',
    ])
      ->condition('uid', $this->currentUser
      ->id())
      ->orderBy('login', 'DESC')
      ->range(1, 1)
      ->execute()
      ->fetch();
  }
  if ($last_login) {
    $request = $this->requestStack
      ->getCurrentRequest();
    $hostname = $last_login->hostname == $request
      ->getClientIP() ? $this
      ->t('this IP address') : $last_login->hostname;
    $user_agent = $last_login->user_agent == $request->server
      ->get('HTTP_USER_AGENT') ? $this
      ->t('this browser') : $last_login->user_agent;
    $build['last_login']['#markup'] = '<p>' . $this
      ->t('You last logged in from @hostname using @user_agent.', [
      '@hostname' => $hostname,
      '@user_agent' => $user_agent,
    ]) . '</p>';
    if ($this->currentUser
      ->hasPermission('view own login history')) {
      $build['view_report'] = [
        '#type' => 'more_link',
        '#title' => $this
          ->t('View your login history'),
        '#url' => Url::fromRoute('login_history.user_report', [
          'user' => $this->currentUser
            ->id(),
        ]),
      ];
    }
  }

  // Cache by session.
  $build['#cache'] = [
    'contexts' => [
      'session',
    ],
  ];
  return $build;
}