do_action( 'after_setup_theme' )

使用示例

• 示例1

  当每个页面在主题初始化后加载时，就会调用这个钩子。这用于基本主题设置、主题功能和初始化钩子的注册。这个钩子的基本用法可以在WordPress安装附带的默认主题上看到。

  下面是 twentyfifteen 默认主题的示例代码。

  if ( ! function_exists( 'twentyfifteen_setup' ) ) :
  /**
   * Sets up theme defaults and registers support for various WordPress features.
   *
   * Note that this function is hooked into the after_setup_theme hook, which
   * runs before the init hook. The init hook is too late for some features, such
   * as indicating support for post thumbnails.
   *
   * @since Twenty Fifteen 1.0
   */
  function twentyfifteen_setup() {
  
  	/*
  	 * Make theme available for translation.
  	 * Translations can be filed in the /languages/ directory.
  	 * If you're building a theme based on twentyfifteen, use a find and replace
  	 * to change 'twentyfifteen' to the name of your theme in all the template files
  	 */
  	load_theme_textdomain( 'twentyfifteen', get_template_directory() . '/languages' );
  
  	// Add default posts and comments RSS feed links to head.
  	add_theme_support( 'automatic-feed-links' );
  
  	/*
  	 * Let WordPress manage the document title.
  	 * By adding theme support, we declare that this theme does not use a
  	 * hard-coded  tag in the document head, and expect WordPress to
  	 * provide it for us.
  	 */
  	add_theme_support( 'title-tag' );
  
  	/*
  	 * Enable support for Post Thumbnails on posts and pages.
  	 *
  	 * See: https://codex.wordpress.org/Function_Reference/add_theme_support#Post_Thumbnails
  	 */
  	add_theme_support( 'post-thumbnails' );
  	set_post_thumbnail_size( 825, 510, true );
  
  	// This theme uses wp_nav_menu() in two locations.
  	register_nav_menus( array(
  		'primary' => __( 'Primary Menu',      'twentyfifteen' ),
  		'social'  => __( 'Social Links Menu', 'twentyfifteen' ),
  	) );
  
  	/*
  	 * Switch default core markup for search form, comment form, and comments
  	 * to output valid HTML5.
  	 */
  	add_theme_support( 'html5', array(
  		'search-form', 'comment-form', 'comment-list', 'gallery', 'caption'
  	) );
  
  	/*
  	 * Enable support for Post Formats.
  	 *
  	 * See: https://codex.wordpress.org/Post_Formats
  	 */
  	add_theme_support( 'post-formats', array(
  		'aside', 'image', 'video', 'quote', 'link', 'gallery', 'status', 'audio', 'chat'
  	) );
  
  	$color_scheme  = twentyfifteen_get_color_scheme();
  	$default_color = trim( $color_scheme[0], '#' );
  
  	// Setup the WordPress core custom background feature.
  	add_theme_support( 'custom-background', apply_filters( 'twentyfifteen_custom_background_args', array(
  		'default-color'      => $default_color,
  		'default-attachment' => 'fixed',
  	) ) );
  
  	/*
  	 * This theme styles the visual editor to resemble the theme style,
  	 * specifically font, colors, icons, and column width.
  	 */
  	add_editor_style( array( 'css/editor-style.css', 'genericons/genericons.css', twentyfifteen_fonts_url() ) );
  }
  endif; // twentyfifteen_setup
  add_action( 'after_setup_theme', 'twentyfifteen_setup' );

• 示例2

  主题可以注册自己的编辑器颜色，并有选择地锁定用户从定义的调色板中进行拾取。

  /**
   * Overwrite block editor’s default color palette. 
   *
   * @return void
   */
  function prefix_editor_color_palette() {
  	add_theme_support( 'editor-color-palette', array(
  		array(
  		    'name'  => __( 'Storm Gray', 'themeLangDomain' ),
  		    'slug'  => 'storm-gray',
  		    'color' => '#6B6F82',
  		),
  		array(
  		    'name'  => __( 'Martinique', 'themeLangDomain' ),
  		    'slug'  => 'martinique',
  		    'color' => '#2D2E4F',
  		),
  		array(
  		    'name'  => __( 'Cornflower Blue', 'themeLangDomain' ),
  		    'slug'  => 'cornflower-blue',
  		    'color' => '#666EE8',
  		),
  		array(
  		    'name'  => __( 'Radical Red', 'themeLangDomain' ),
  		    'slug'  => 'radical-red',
  		    'color' => '#FF4961',
  		),
      ) );
  }
  add_action( 'after_setup_theme', 'prefix_editor_color_palette' );
  

• 示例3

  我就是这样尝试的，效果很好。

  <?php 
  	
  	add_action( 'after_setup_theme', 'wpdocs_i_am_a_function' );
  	
  	function wpdocs_i_am_a_function() {
  
  		add_theme_support( 'title-tag' );
  		add_theme_support( 'post-thumbnails' );
  		add_theme_support( 'custom-header' );
  
  	}
  
   ?>