do_action( 'admin_init' )

使用示例

• 示例1

  从Codex迁移的示例：

  在本例中，我们阻止没有管理员角色的用户访问管理面板。

  /**
   * Restrict access to the administration screens.
   *
   * Only administrators will be allowed to access the admin screens,
   * all other users will be shown a message instead.
   *
   * We do allow access for Ajax requests though, since these may be
   * initiated from the front end of the site by non-admin users.
   */
  function restrict_admin() {
  
  	if ( ! current_user_can( 'manage_options' ) && ( ! wp_doing_ajax() ) ) {
  		wp_die( __( 'You are not allowed to access this part of the site' ) );
  	}
  }
  add_action( 'admin_init', 'restrict_admin', 1 );
  

• 示例2

  从Codex迁移的示例：

  此示例的工作方式与第一个示例类似，但它会自动将缺乏指定能力的用户重定向到主页。

  /**
   * Restrict access to the administration screens.
   *
   * Only administrators will be allowed to access the admin screens,
   * all other users will be automatically redirected to the front of
   * the site instead.
   *
   * We do allow access for Ajax requests though, since these may be
   * initiated from the front end of the site by non-admin users.
   */
  function restrict_admin_with_redirect() {
  
  	if ( ! current_user_can( 'manage_options' ) && ( ! wp_doing_ajax() ) ) {
  		wp_safe_redirect( site_url() ); 
  		exit;
  	}
  }
  
  add_action( 'admin_init', 'restrict_admin_with_redirect', 1 );
  

• 示例3

  从Codex迁移的示例：

  另一个典型用法是注册一个新设置供插件使用：

  function myplugin_settings() {
      register_setting( 'myplugin', 'myplugin_setting_1', 'intval' );
      register_setting( 'myplugin', 'myplugin_setting_2', 'intval' );
  }
  add_action( 'admin_init', 'myplugin_settings' );
  

• 示例4

  /**
   * Fire on the initialization of the admin screen or scripts.
   */
  function the_dramatist_fire_on_admin_screen_initialization() {
      // Do stuff. Say we will echo "Hello World".
      echo 'Hello World';
  }
  add_action( 'admin_init', 'the_dramatist_fire_on_admin_screen_initialization' );
  

  如果用户在管理屏幕中，上述代码只会回显“Hello World”。