获取 Woocommerce 中特定产品属性值的所有产品变体

Get all the product variations for specific product attributes values in Woocommerce

在 WooCommerce 中*(latest version)* I have one变量product withId: 9`.
使用下面的变体属性,我创建了多个产品变体。

然后我想从父产品 ID (Id: 9) 和以下属性值中获取特定的产品变体:

<attribute_for_variation>: <attribute_value_to_filter>
pa_size: size_8x10
pa_material: mat_luster_photo_paper
pa_frame: fra_silver_wood
pa_mat_usage: musa_yes

下面是该变体的屏幕截图:

我已经尝试了以下代码及其相应的结果。 为简单起见,现在,只尝试使用 pa_frame 属性。

尝试 1:

static function filterVariations() {
    $query = [
        'post_parent' => 9,
        'post_status' => 'publish',
        'post_type' => ['product_variation'],
        'posts_per_page' => -1,
    ];
    $result = [];
    $wc_query = new \WP_Query($query);
    while ($wc_query->have_posts()) {
        $wc_query->next_post();
        $result[] = $wc_query->post;
    }
    return $result;
}
// ---> RESULT: all the variations, that's OK

尝试2:

static function filterVariations() {
    $query = [
        'post_parent' => 9,
        'post_status' => 'publish',
        'post_type' => ['product_variation'],
        'posts_per_page' => -1,
        'tax_query' => [
            'relation' => 'AND',
            [
                'taxonomy' => 'pa_frame',
                'field' => 'slug',
                'terms' => [ 'fra_silver_wood' ],
            ],
        ],
    ];
    $result = [];
    $wc_query = new \WP_Query($query);
    while ($wc_query->have_posts()) {
        $wc_query->next_post();
        $result[] = $wc_query->post;
    }
    return $result;
}
// ---> RESULT: empty list

知道如何 return 具有特定属性值的所有变体吗?

可变产品 中的产品属性被设置为 wp_postmeta 数据库 table 中的元数据 。那么您将需要使用元查询而不是税务查询。试试这个:

static function filterVariations() {
    $query = new \WP_Query( array(
        'post_parent' => 9,
        'post_status' => 'publish',
        'post_type' => 'product_variation',
        'posts_per_page' => -1,
        'meta_query' => array( array(
            'key' => 'attribute_pa_frame',
            'value' => 'fra_silver_wood',
        ) ),
    ) );
    $result = array();
    if($query->have_posts()){
        while ($query->have_posts()) {
            $query->next_post();
            $result[] = $query->post;
        }
        wp_reset_postdata();
    }
    wp_reset_query();

    return $result;
}

现在应该可以正常工作了……

对于您问题中列出的多个产品属性对(键/值),您只需在 WP_Query 中以这种方式使用它们:

public function filterVariations() {
    $query = new \WP_Query( array(
        'post_parent' => 40,
        'post_status' => 'publish',
        'post_type' => 'product_variation',
        'posts_per_page' => -1,
        'meta_query' => array(
            array(
                'key'   => 'attribute_pa_size',
                'value' => 'size_8x10',
            ),
            array(
                'key'   => 'attribute_pa_material',
                'value' => 'mat_luster_photo_paper',
            ),
            array(
                'key'   => 'attribute_pa_frame',
                'value' => 'fra_silver_wood',
            ),
            array(
                'key'   => 'attribute_pa_mat_usage',
                'value' => 'musa_yes',
            ),
        ),
    ) );
    $result = array();
    if($query->have_posts()){
        while ($query->have_posts()) {
            $query->next_post();
            $result[] = $query->post;
        }
        wp_reset_postdata();
    }
    wp_reset_query();

    return $result;
}

那么你会正常得到对应的产品变体(只有一个)…

Note: product attributes meta keys start all with attribute_pa_ instead of just pa_

文档:WP_Query and Custom Field Parameters (meta query)