添加Stock Status布尔值作为WooCommerce变量选择器的自定义属性

我使用的是由LoicTheAztec提供的代码。它将库存状态相关的文本添加到WooCommerce产品的变体选择器中。

但是，我还想在下拉选择器中为每个<option ... >添加一个自定义属性。

我这样做的原因是我正在编写一些jQuery，它将被所选的option是否在库存中触发。如果每个option都有一个股票属性，那将是最干净的。例如:<option value=“1kg” class=“ ... “ stock-status=“true”>1kg - (in stock)</option>。在这个例子中，我添加了一个名为stock-status的自定义属性，它将是true或false。

使用的代码是:

// Function that will check the stock status and display the corresponding additional text
function get_stock_status_text( $product, $name, $term_slug ){
foreach ( $product->get_available_variations() as $variation ){
if($variation['attributes'][$name] == $term_slug ) {
$stock = $variation['is_in_stock'];
break;
}
}
return $stock == 1 ? ' - (In Stock)' : ' - (Out of Stock)';
}
// The hooked function that will add the stock status to the dropdown options elements.
add_filter( 'woocommerce_dropdown_variation_attribute_options_html', 'show_stock_status_in_dropdown', 10, 2);
function show_stock_status_in_dropdown( $html, $args ) {
// Only if there is a unique variation attribute (one dropdown)
if( sizeof($args['product']->get_variation_attributes()) == 1 ) :
$options               = $args['options'];
$product               = $args['product'];
$attribute             = $args['attribute']; // The product attribute taxonomy
$name                  = $args['name'] ? $args['name'] : 'attribute_' . sanitize_title( $attribute );
$id                    = $args['id'] ? $args['id'] : sanitize_title( $attribute );
$class                 = $args['class'];
$show_option_none      = $args['show_option_none'] ? true : false;
$show_option_none_text = $args['show_option_none'] ? $args['show_option_none'] : __( 'Choose an option', 'woocommerce' );
if ( empty( $options ) && ! empty( $product ) && ! empty( $attribute ) ) {
$attributes = $product->get_variation_attributes();
$options    = $attributes[ $attribute ];
}
$html = '<select id="' . esc_attr( $id ) . '" class="' . esc_attr( $class ) . '" name="' . esc_attr( $name ) . '" data-attribute_name="attribute_' . esc_attr( sanitize_title( $attribute ) ) . '" data-show_option_none="' . ( $show_option_none ? 'yes' : 'no' ) . '">';
$html .= '<option value="">' . esc_html( $show_option_none_text ) . '</option>';
if ( ! empty( $options ) ) {
if ( $product && taxonomy_exists( $attribute ) ) {
$terms = wc_get_product_terms( $product->get_id(), $attribute, array( 'fields' => 'all' ) );
foreach ( $terms as $term ) {
if ( in_array( $term->slug, $options ) ) {
// HERE Added the function to get the text status
$stock_status = get_stock_status_text( $product, $name, $term->slug );
$html .= '<option value="' . esc_attr( $term->slug ) . '" ' . selected( sanitize_title( $args['selected'] ), $term->slug, false ) . '>' . esc_html( apply_filters( 'woocommerce_variation_option_name', $term->name ) . $stock_status ) . '</option>';
}
}
} else {
foreach ( $options as $option ) {
$selected = sanitize_title( $args['selected'] ) === $args['selected'] ? selected( $args['selected'], sanitize_title( $option ), false ) : selected( $args['selected'], $option, false );
// HERE Added the function to get the text status
$stock_status = get_stock_status_text( $product, $name, $option );
$html .= '<option value="' . esc_attr( $option ) . '" ' . $selected . '>' . esc_html( apply_filters( 'woocommerce_variation_option_name', $option ) . $stock_status ) . '</option>';
}
}
}
$html .= '</select>';
endif;
return $html;
}

我的PHP知识不足以让我知道最好的方法。一种粗略的方法是测试get_stock_status_text的结果是否包含字符串(In或(No，然后相应地将stock-status=“true”(或false)添加到$html输出中。我可能会想出一个方法，但我怀疑这不是最好的方法。我认为最好在get_stock_status_text函数中设置一个变量为true或false，然后根据stock-status自定义属性的值相应地具有true|false的值。

用true|false值向$html输出添加自定义属性的有效方法是什么?

经过一番尝试，看起来我已经想出了一个解决方案。如果有更有效或更整洁的方法来达到这个结果，我很想知道。这个解决方案至少有期望的输出。

我已经修改了代码(从我的问题)如下:

/******* ADD STOCK STATUS TO DROP DOWN SELECTOR ******/
// Function that will check the stock status and display the corresponding additional text
function get_stock_status_text( $product, $name, $term_slug ){
foreach ( $product->get_available_variations() as $variation ){
if($variation['attributes'][$name] == $term_slug ) {
$stock = $variation['is_in_stock'];
break;
}
}
return $stock == 1 ? '&nbsp;- (In Stock)' : '&nbsp;- (No Stock)';
}
function get_stock_status_bool( $product, $name, $term_slug ){
foreach ( $product->get_available_variations() as $variation ){
if($variation['attributes'][$name] == $term_slug ) {
$stock_bool = $variation['is_in_stock'];
break;
}
}
return $stock_bool == 1 ? 'true' : 'false';
}
// The hooked function that will add the stock status to the dropdown options elements.
add_filter( 'woocommerce_dropdown_variation_attribute_options_html', 'show_stock_status_in_dropdown', 10, 2);
function show_stock_status_in_dropdown( $html, $args ) {
// Only if there is a unique variation attribute (one dropdown)
if( sizeof($args['product']->get_variation_attributes()) == 1 ) :
$options               = $args['options'];
$product               = $args['product'];
$attribute             = $args['attribute']; // The product attribute taxonomy
$name                  = $args['name'] ? $args['name'] : 'attribute_' . sanitize_title( $attribute );
$id                    = $args['id'] ? $args['id'] : sanitize_title( $attribute );
$class                 = $args['class'];
$show_option_none      = $args['show_option_none'] ? true : false;
$show_option_none_text = $args['show_option_none'] ? $args['show_option_none'] : __( 'Choose an option', 'woocommerce' );
if ( empty( $options ) && ! empty( $product ) && ! empty( $attribute ) ) {
$attributes = $product->get_variation_attributes();
$options    = $attributes[ $attribute ];
}
$html = '<select id="' . esc_attr( $id ) . '" class="' . esc_attr( $class ) . '" name="' . esc_attr( $name ) . '" data-attribute_name="attribute_' . esc_attr( sanitize_title( $attribute ) ) . '" data-show_option_none="' . ( $show_option_none ? 'yes' : 'no' ) . '">';
$html .= '<option value="">' . esc_html( $show_option_none_text ) . '</option>';
if ( ! empty( $options ) ) {
if ( $product && taxonomy_exists( $attribute ) ) {
$terms = wc_get_product_terms( $product->get_id(), $attribute, array( 'fields' => 'all' ) );
foreach ( $terms as $term ) {
if ( in_array( $term->slug, $options ) ) {
// HERE Added the function to get the text status
$stock_status = get_stock_status_text( $product, $name, $term->slug );
$stock_attr = get_stock_status_bool( $product, $name, $term->slug );
$html .= '<option value="' . esc_attr( $term->slug ) . '" ' . selected( sanitize_title( $args['selected'] ), $term->slug, false ) . ' stock-status="' . $stock_attr . '">' . esc_html( apply_filters( 'woocommerce_variation_option_name', $term->name ) . $stock_status ) . '</option>';
}
}
} else {
foreach ( $options as $option ) {
$selected = sanitize_title( $args['selected'] ) === $args['selected'] ? selected( $args['selected'], sanitize_title( $option ), false ) : selected( $args['selected'], $option, false );
// HERE Added the function to get the text status
$stock_status = get_stock_status_text( $product, $name, $option );
$stock_attr = get_stock_status_bool( $product, $name, $term->slug );
$html .= '<option value="' . esc_attr( $option ) . '" ' . $selected . ' stock-status="' . $stock_attr . '">' . esc_html( apply_filters( 'woocommerce_variation_option_name', $option ) . $stock_status ) . '</option>';
}
}
}
$html .= '</select>';
endif;
return $html;
}

主要增加了一个新函数get_stock_status_bool。它是get_stock_status_text的副本，只是返回true或false。

在调用get_stock_status_text函数之后调用该函数，并将其值赋给$stock_attr。然后将$stock_attr添加到$html值中(例如<option value=“1 kg” selected=“selected” stock-status=“true” class=“ ...”>1kg - $150 - (In Stock)</option>

)。

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