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40 lines
1.3 KiB
PHP
40 lines
1.3 KiB
PHP
<?php
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/*
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* Plugin Name: Prevent activation of themes having a child theme available
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* Plugin URI: https://github.com/szepeviktor/wordpress-website-lifecycle
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*/
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add_action(
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'after_switch_theme',
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static function ($old_theme_name, $old_theme) {
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// Child themes are OK.
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if (is_child_theme()) {
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return;
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}
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// Detect child theme.
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$current_theme = wp_get_theme();
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$themes = wp_get_themes();
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foreach ($themes as $theme) {
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// "Theme Name:" header.
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if ($current_theme->name !== $theme->parent_theme) {
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continue;
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}
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// Switch back to the previous theme as this one has a child.
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switch_theme($old_theme->stylesheet);
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error_log(sprintf('%s has a child theme, reverting to %s', $current_theme->name, $old_theme->name));
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add_action(
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'admin_notices',
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static function () {
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$error_message = 'Reverted to previous theme as new one has a child theme';
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printf('<div class="notice-error"><p>%s</p></div>', esc_html($error_message));
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},
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10,
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0
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);
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break;
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}
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},
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10,
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2
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);
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