我正在尝试将一个小部件添加到Woocommerce以使用滑块按数量过滤产品。我通过更改价格过滤器滑块的woocommerce的开源代码来实现这一目标。它一旦在网站上打印就没有错误，但它不会过滤结果。 URL上的输出也是预期的。滑块不起作用，但如果我无法修复它就没问题了。截至目前，它有两个输入字段：最大和最小库存数量。请帮忙。我相信其他人也会从中受益。我需要它，因为该网站是批发的，如果产品不可用是客户想要的最小数量，他们可以过滤掉。
// Register and load the widget
function my_stock_widget() {
register_widget( 'WC_Widget_Stock_Filter' );
}
add_action( 'widgets_init', 'my_stock_widget' );
class WC_Widget_Stock_Filter extends WC_Widget {
/**
* Constructor.
*/
public function __construct() {
$this->widget_cssclass = 'woocommerce widget_stock_filter';
$this->widget_description = __( 'Shows a stock filter slider in a widget which lets you narrow down the list of shown products when viewing product categories.', 'woocommerce' );
$this->widget_id = 'woocommerce_stock_filter';
$this->widget_name = __( 'WooCommerce stock filter', 'woocommerce' );
$this->settings = array(
'title' => array(
'type' => 'text',
'std' => __( 'Filter by stock', 'woocommerce' ),
'label' => __( 'Title', 'woocommerce' ),
),
);
$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
wp_register_script( 'accounting', WC()->plugin_url() . '/assets/js/accounting/accounting' . $suffix . '.js', array( 'jquery' ), '0.4.2' );
wp_register_script( 'wc-jquery-ui-touchpunch', WC()->plugin_url() . '/assets/js/jquery-ui-touch-punch/jquery-ui-touch-punch' . $suffix . '.js', array( 'jquery-ui-slider' ), WC_VERSION, true );
wp_register_script( 'wc-stock-slider', WC()->plugin_url() . '/assets/js/frontend/price-slider' . $suffix . '.js', array( 'jquery-ui-slider', 'wc-jquery-ui-touchpunch', 'accounting' ), WC_VERSION, true );
wp_localize_script( 'wc-stock-slider', 'woocommerce_stock_slider_params', array(
'min_stock' => isset( $_GET['min_stock'] ) ? esc_attr( $_GET['min_stock'] ) : '',
'max_stock' => isset( $_GET['max_stock'] ) ? esc_attr( $_GET['max_stock'] ) : '',
'currency_format_num_decimals' => 0,
// 'currency_format_symbol' => get_woocommerce_currency_symbol(),
'currency_format_decimal_sep' => esc_attr( wc_get_price_decimal_separator() ),
'currency_format_thousand_sep' => esc_attr( wc_get_price_thousand_separator() ),
// 'currency_format' => esc_attr( str_replace( array( '%1$s', '%2$s' ), array( '%s', '%v' ), get_woocommerce_stock_format() ) ),
) );
parent::__construct();
}
/**
* Output widget.
*
* @see WP_Widget
*
* @param array $args
* @param array $instance
*/
public function widget( $args, $instance ) {
global $wp, $wp_the_query;
if ( ! is_post_type_archive( 'product' ) && ! is_tax( get_object_taxonomies( 'product' ) ) ) {
return;
}
if ( ! $wp_the_query->post_count ) {
return;
}
$min_stock = isset( $_GET['min_stock'] ) ? esc_attr( $_GET['min_stock'] ) : '';
$max_stock = isset( $_GET['max_stock'] ) ? esc_attr( $_GET['max_stock'] ) : '';
wp_enqueue_script( 'wc-stock-slider' );
// Find min and max stock in current result set
$stocks = $this->get_filtered_stock();
$min = floor( $stocks->min_stock );
$max = ceil( $stocks->max_stock );
if ( $min === $max ) {
return;
}
$this->widget_start( $args, $instance );
if ( '' === get_option( 'permalink_structure' ) ) {
$form_action = remove_query_arg( array( 'page', 'paged' ), add_query_arg( $wp->query_string, '', home_url( $wp->request ) ) );
} else {
$form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( trailingslashit( $wp->request ) ) );
}
/**
* Adjust max if the store taxes are not displayed how they are stored.
* Min is left alone because the product may not be taxable.
* Kicks in when stocks excluding tax are displayed including tax.
*
if ( wc_tax_enabled() && 'incl' === get_option( 'woocommerce_tax_display_shop' ) && ! wc_stocks_include_tax() ) {
$tax_classes = array_merge( array( '' ), WC_Tax::get_tax_classes() );
$class_max = $max;
foreach ( $tax_classes as $tax_class ) {
if ( $tax_rates = WC_Tax::get_rates( $tax_class ) ) {
$class_max = $max + WC_Tax::get_tax_total( WC_Tax::calc_exclusive_tax( $max, $tax_rates ) );
}
}
$max = $class_max;
}*/
echo '<form method="get" action="' . esc_url( $form_action ) . '">
<div class="stock_slider_wrapper">
<div class="stock_slider" style="display:none;"></div>
<div class="stock_slider_amount">
<input type="text" id="min_stock" name="min_stock" value="' . esc_attr( $min_stock ) . '" data-min="' . esc_attr( apply_filters( 'woocommerce_stock_filter_widget_min_amount', $min ) ) . '" placeholder="' . esc_attr__( 'Min stock', 'woocommerce' ) . '" />
<input type="text" id="max_stock" name="max_stock" value="' . esc_attr( $max_stock ) . '" data-max="' . esc_attr( apply_filters( 'woocommerce_stock_filter_widget_max_amount', $max ) ) . '" placeholder="' . esc_attr__( 'Max stock', 'woocommerce' ) . '" />
<button type="submit" class="button">' . esc_html__( 'Filter', 'woocommerce' ) . '</button>
<div class="stock_label" style="display:none;">
' . esc_html__( 'Stock:', 'woocommerce' ) . ' <span class="from"></span> — <span class="to"></span>
</div>
' . wc_query_string_form_fields( null, array( 'min_stock', 'max_stock' ), '', true ) . '
<div class="clear"></div>
</div>
</div>
</form>';
$this->widget_end( $args );
}
/**
* Get filtered min stock for current products.
* @return int
*/
protected function get_filtered_stock() {
global $wpdb, $wp_the_query;
$args = $wp_the_query->query_vars;
$tax_query = isset( $args['tax_query'] ) ? $args['tax_query'] : array();
$meta_query = isset( $args['meta_query'] ) ? $args['meta_query'] : array();
if ( ! is_post_type_archive( 'product' ) && ! empty( $args['taxonomy'] ) && ! empty( $args['term'] ) ) {
$tax_query[] = array(
'taxonomy' => $args['taxonomy'],
'terms' => array( $args['term'] ),
'field' => 'slug',
);
}
foreach ( $meta_query + $tax_query as $key => $query ) {
if ( ! empty( $query['stock_filter'] ) || ! empty( $query['rating_filter'] ) ) {
unset( $meta_query[ $key ] );
}
}
$meta_query = new WP_Meta_Query( $meta_query );
$tax_query = new WP_Tax_Query( $tax_query );
$meta_query_sql = $meta_query->get_sql( 'post', $wpdb->posts, 'ID' );
$tax_query_sql = $tax_query->get_sql( $wpdb->posts, 'ID' );
$sql = "SELECT min( FLOOR( stock_meta.meta_value ) ) as min_stock, max( CEILING( stock_meta.meta_value ) ) as max_stock FROM {$wpdb->posts} ";
$sql .= " LEFT JOIN {$wpdb->postmeta} as stock_meta ON {$wpdb->posts}.ID = stock_meta.post_id " . $tax_query_sql['join'] . $meta_query_sql['join'];
$sql .= " WHERE {$wpdb->posts}.post_type IN ('" . implode( "','", array_map( 'esc_sql', apply_filters( 'woocommerce_stock_filter_meta_keys', array( 'product' ) ) ) ) . "')
AND {$wpdb->posts}.post_status = 'publish'
AND stock_meta.meta_key IN ('" . implode( "','", array_map( 'esc_sql', apply_filters( 'woocommerce_stock_filter_meta_keys', array( '_stock' ) ) ) ) . "')
AND stock_meta.meta_value > '' ";
$sql .= $tax_query_sql['where'] . $meta_query_sql['where'];
if ( $search = WC_Query::get_main_search_query_sql() ) {
$sql .= ' AND ' . $search;
}
return $wpdb->get_row( $sql );
}