Question

我在functions.php文件中有一些设置代码，用于设置永久链接并添加主题使用的类别。我只想在首次激活主题时运行此代码。代码无需再次运行。但是，通过将其放在functions.php文件中，它会在每次加载网站上的页面时运行。

是否有其他方法可供使用，以便此代码仅在首次激活自定义主题时运行？

Answer 1

在 wp-includes / theme.php 中，您会找到函数switch_theme()。它提供了一个动作钩子：

/**
 * Switches current theme to new template and stylesheet names.
 *
 * @since unknown
 * @uses do_action() Calls 'switch_theme' action on updated theme display name.
 *
 * @param string $template Template name
 * @param string $stylesheet Stylesheet name.
 */
function switch_theme($template, $stylesheet) {
    update_option('template', $template);
    update_option('stylesheet', $stylesheet);
    delete_option('current_theme');
    $theme = get_current_theme();
    do_action('switch_theme', $theme);
}

所以你可以在你的functions.php中使用它：

function my_activation_settings($theme)
{
    if ( 'Your Theme Name' == $theme )
    {
        // do something
    }
    return;
}
add_action('switch_theme', 'my_activation_settings');

只是一个想法;我还没有测试过。

Answer 2

另一个要看的是after_switch_theme它也在 wp-includes / theme.php

它似乎是check_theme_switched

中的一个钩子

    /**
     * Checks if a theme has been changed and runs 'after_switch_theme' hook on the next WP load
     *
     * @since 3.3.0
     */
    function check_theme_switched() {
            if ( $stylesheet = get_option( 'theme_switched' ) ) {
                    $old_theme = wp_get_theme( $stylesheet );

                    // Prevent retrieve_widgets() from running since Customizer already called it up front
                    if ( get_option( 'theme_switched_via_customizer' ) ) {
                            remove_action( 'after_switch_theme', '_wp_sidebars_changed' );
                            update_option( 'theme_switched_via_customizer', false );
                    }

                    if ( $old_theme->exists() ) {
                            /**
                             * Fires on the first WP load after a theme switch if the old theme still exists.
                             *
                             * This action fires multiple times and the parameters differs
                             * according to the context, if the old theme exists or not.
                             * If the old theme is missing, the parameter will be the slug
                             * of the old theme.
                             *
                             * @since 3.3.0
                             *
                             * @param string   $old_name  Old theme name.
                             * @param WP_Theme $old_theme WP_Theme instance of the old theme.
                             */
                            do_action( 'after_switch_theme', $old_theme->get( 'Name' ), $old_theme );
                    } else {
                            /** This action is documented in wp-includes/theme.php */
                            do_action( 'after_switch_theme', $stylesheet );
                    }
                    flush_rewrite_rules();

                    update_option( 'theme_switched', false );
            }
    }`

add_action('after_switch_theme', 'my_activation_settings');

我认为两种方式都可以解决其他问题：）

WordPress自定义主题＆gt;仅在激活时执行“设置”代码？

2 个答案: