再全部商品的管理頁面，可以用標籤篩選商品。
<?php /** * Plugin Name: WC Admin Filter Manager * Description: 在後台「商品 → 所有商品」頁提供管理介面：可勾選移除（商品類型/存貨狀態/品牌/商品分類）等既有篩選；並可新增「商品標籤」篩選。 * Version: 1.2.0 * Author: (Your Name) * License: GPL-2.0+ * Text Domain: wc-admin-filter-manager */ if ( ! defined( 'ABSPATH' ) ) exit; class WC_Admin_Filter_Manager { const OPT_KEY = 'wca_filter_manager'; public function __construct() { // 設定頁 add_action( 'admin_menu', [ $this, 'add_settings_page' ] ); add_action( 'admin_init', [ $this, 'register_settings' ] ); // 實際作用於商品清單 add_filter( 'woocommerce_products_admin_list_table_filters', [ $this, 'maybe_remove_core_filters' ], 20 ); add_filter( 'woocommerce_product_filters', [ $this, 'maybe_strip_taxonomy_dropdowns' ], 20 ); add_action( 'restrict_manage_posts', [ $this, 'maybe_add_product_tag_dropdown' ], 20 ); add_filter( 'parse_query', [ $this, 'apply_product_tag_filter' ] ); } /** === 設定頁 === */ public function add_settings_page() { add_submenu_page( 'woocommerce', __( '後台商品篩選管理', 'wc-admin-filter-manager' ), __( '篩選管理', 'wc-admin-filter-manager' ), 'manage_woocommerce', 'wc-admin-filter-manager', [ $this, 'render_settings_page' ] ); } public function register_settings() { register_setting( 'wca_fm_group', self::OPT_KEY ); add_settings_section( 'wca_fm_section_main', '', '__return_false', 'wc-admin-filter-manager' ); add_settings_field( 'remove_filters', __( '要移除的篩選（後台「所有商品」頁）', 'wc-admin-filter-manager' ), [ $this, 'field_remove_filters' ], 'wc-admin-filter-manager', 'wca_fm_section_main' ); add_settings_field( 'add_filters', __( '要新增的篩選', 'wc-admin-filter-manager' ), [ $this, 'field_add_filters' ], 'wc-admin-filter-manager', 'wca_fm_section_main' ); } public function get_options() { $defaults = [ 'remove_product_type' => 0, 'remove_stock_status' => 0, 'remove_brand' => 0, 'remove_category' => 0, 'add_product_tag' => 1, // 預設啟用商品標籤篩選 ]; $saved = get_option( self::OPT_KEY, [] ); return wp_parse_args( is_array( $saved ) ? $saved : [], $defaults ); } public function render_settings_page() { if ( ! current_user_can( 'manage_woocommerce' ) ) { return; } ?> <div class="wrap"> <h1><?php esc_html_e( '後台商品篩選管理', 'wc-admin-filter-manager' ); ?></h1> <form method="post" action="options.php"> <?php settings_fields( 'wca_fm_group' ); do_settings_sections( 'wc-admin-filter-manager' ); submit_button(); ?> </form> <p style="opacity:.8"> <?php esc_html_e('提示：品牌篩選需搭配品牌 taxonomy（例如 WooCommerce Brands 外掛的 product_brand）。若沒有該 taxonomy，本選項不會有作用。', 'wc-admin-filter-manager'); ?> </p> </div> <?php } public function field_remove_filters() { $o = $this->get_options(); ?> <label><input type="checkbox" name="<?php echo esc_attr(self::OPT_KEY); ?>[remove_product_type]" value="1" <?php checked( $o['remove_product_type'], 1 ); ?> /> <?php esc_html_e('商品類型', 'wc-admin-filter-manager'); ?></label><br/> <label><input type="checkbox" name="<?php echo esc_attr(self::OPT_KEY); ?>[remove_stock_status]" value="1" <?php checked( $o['remove_stock_status'], 1 ); ?> /> <?php esc_html_e('存貨狀態', 'wc-admin-filter-manager'); ?></label><br/> <label><input type="checkbox" name="<?php echo esc_attr(self::OPT_KEY); ?>[remove_brand]" value="1" <?php checked( $o['remove_brand'], 1 ); ?> /> <?php esc_html_e('品牌篩選', 'wc-admin-filter-manager'); ?></label><br/> <label><input type="checkbox" name="<?php echo esc_attr(self::OPT_KEY); ?>[remove_category]" value="1" <?php checked( $o['remove_category'], 1 ); ?> /> <?php esc_html_e('商品分類', 'wc-admin-filter-manager'); ?></label> <?php } public function field_add_filters() { $o = $this->get_options(); ?> <label><input type="checkbox" name="<?php echo esc_attr(self::OPT_KEY); ?>[add_product_tag]" value="1" <?php checked( $o['add_product_tag'], 1 ); ?> /> <?php esc_html_e('商品標籤', 'wc-admin-filter-manager'); ?></label> <?php } /** === 作用：移除核心篩選 === */ public function maybe_remove_core_filters( $filters ) { $o = $this->get_options(); if ( ! empty( $o['remove_product_type'] ) && isset( $filters['product_type'] ) ) { unset( $filters['product_type'] ); } if ( ! empty( $o['remove_stock_status'] ) && isset( $filters['stock_status'] ) ) { unset( $filters['stock_status'] ); } // 有些環境下，分類/品牌也可能出現在此陣列，盡量處理 if ( ! empty( $o['remove_category'] ) ) { foreach ( [ 'product_category', 'product_cat' ] as $k ) { if ( isset( $filters[ $k ] ) ) unset( $filters[ $k ] ); } } if ( ! empty( $o['remove_brand'] ) ) { foreach ( [ 'product_brand', 'brand' ] as $k ) { if ( isset( $filters[ $k ] ) ) unset( $filters[ $k ] ); } } return $filters; } /** === 作用：剔除 taxonomy 下拉（分類/品牌） === * WooCommerce 會透過 woocommerce_product_filters 印出 HTML 字串（包含商品分類、視需求也可能包含品牌）。 * 這裡用簡單的字串/正則把不需要的下拉移除。 */ public function maybe_strip_taxonomy_dropdowns( $output ) { $o = $this->get_options(); $orig = $output; // 移除「商品分類」：name="product_cat" 或 id="dropdown_product_cat" if ( ! empty( $o['remove_category'] ) ) { $output = preg_replace( '#<select[^>]*(name=["\']product_cat["\']|id=["\']dropdown_product_cat["\'])[^>]*>.*?</select>#si', '', $output ); } // 移除「品牌」（WooCommerce Brands 預設 name="product_brand"） if ( ! empty( $o['remove_brand'] ) ) { $output = preg_replace( '#<select[^>]*name=["\']product_brand["\'][^>]*>.*?</select>#si', '', $output ); } return $output; } /** === 作用：新增「商品標籤」篩選 === */ public function maybe_add_product_tag_dropdown( $post_type ) { $o = $this->get_options(); if ( empty( $o['add_product_tag'] ) ) return; if ( $post_type !== 'product' ) return; $taxonomy = 'product_tag'; $tax_obj = get_taxonomy( $taxonomy ); if ( ! $tax_obj ) return; $selected = isset( $_GET[ $taxonomy ] ) ? sanitize_text_field( wp_unslash( $_GET[ $taxonomy ] ) ) : ''; wp_dropdown_categories( [ 'show_option_all' => sprintf( esc_html__( '所有 %s', 'wc-admin-filter-manager' ), $tax_obj->labels->name ), 'taxonomy' => $taxonomy, 'name' => $taxonomy, 'orderby' => 'name', 'selected' => $selected, 'hierarchical' => false, 'show_count' => true, 'hide_empty' => false, 'value_field' => 'term_id', ] ); } public function apply_product_tag_filter( $query ) { if ( ! is_admin() || ! $query->is_main_query() ) return $query; global $pagenow; if ( $pagenow !== 'edit.php' ) return $query; if ( ( isset( $_GET['post_type'] ) ? sanitize_key( $_GET['post_type'] ) : 'post' ) !== 'product' ) return $query; $taxonomy = 'product_tag'; if ( ! empty( $_GET[ $taxonomy ] ) && is_numeric( $_GET[ $taxonomy ] ) ) { $term = get_term_by( 'id', (int) $_GET[ $taxonomy ], $taxonomy ); if ( $term && ! is_wp_error( $term ) ) { $query->query_vars[ $taxonomy ] = $term->slug; } } return $query; } } new WC_Admin_Filter_Manager(); |