php - 如果没有帖子或少于3个，则在查询中添加其他标签名称

Question

我需要在wordpresspost的产品页面中显示一个部分。此帖子列表将根据并遵循.tag namesorder of priority

我的每个产品都有 3 个标签值。

$variant

$model

$brand

所有获得标签 $variant 的帖子都应该首先显示

If no post ( with 'tag' => $variant ) OR the total of post < 6

Then get the rest of the post ( with 'tag' => $model )

If no post ( with 'tag' => $model ) OR the total of post < 6

Then get the rest of the post ( with 'tag' => $brand )

到目前为止，我尝试了多种解决方案，例如合并查询或在不再发布时尝试更改查询。但似乎没有让它工作。所以我现在回到我的第一个代码，尝试按我想首先显示的标签值对帖子进行排序。

$original_query = $wp_query;
$wp_query = null;
$args=array('posts_per_page'=>6, 'tag' => "'.$variant.', '.$model.', '.$brand.'");
$wp_query = new WP_Query( $args );
if ( have_posts()) :
   while (have_posts()) : the_post();
       get_template_part( 'template-parts/molecule/card', 'vertical' );
   endwhile;
endif;
$wp_query = null;
$wp_query = $original_query;
wp_reset_postdata();

知道这是否可能吗？

标签： phpwordpresswoocommerce

Answer 1

尝试这个：

$original_query = $wp_query;
$wp_query = null;

$args = array(
    'posts_per_page' => 6,
    'tag' => $variant
);
$wp_query = new WP_Query( $args );

// Let's check how many posts with the variant tag we find
$count = 0;

// Posts by variant have been found, display them
if ( have_posts() ) {
    while( have_posts() ) { the_post();
        $count++;
        get_template_part( 'template-parts/molecule/card', 'vertical' );
    }
}

// We don't have 6 posts yet, let's get more posts by model and/or brand
if ( $count < 6 ) {

    $args = array(
        'posts_per_page' => 6 - $count,
        'tag' => $model
    );
    $wp_query = new WP_Query( $args );

    // Posts by model have been found, display them
    if ( have_posts() ) {
        while( have_posts() ) { the_post();
            $count++;
            get_template_part( 'template-parts/molecule/card', 'vertical' );
        }
    }

    // We still don't have 6 posts, let's add some more posts by brand
    if ( $count < 6 ) {

        $args = array(
            'posts_per_page' => 6 - $count,
            'tag' => $brand
        );
        $wp_query = new WP_Query( $args );

        // Posts by model have been found, display them
        if ( have_posts() ) {
            while( have_posts() ) { the_post();
                $count++;
                get_template_part( 'template-parts/molecule/card', 'vertical' );
            }
        }

    }

}

$wp_query = null;
$wp_query = $original_query;

wp_reset_postdata();

不过，为了清楚起见，我将代码重写为这样，以避免与原始$wp_query对象混淆并提高可读性：

$posts_per_page = 6;
$count = 0;

$args = array(
    'posts_per_page' => $posts_per_page,
    'tag' => $variant
);
$posts_by_variant = new WP_Query( $args );

if ( $posts_by_variant->have_posts() ) {
    while( $posts_by_variant->have_posts() ) { $posts_by_variant->the_post();
        $count++;
        get_template_part( 'template-parts/molecule/card', 'vertical' );
    }
}

// We don't have 6 posts, let's get more posts by model and/or brand
if ( $count < $posts_per_page ) {

    $args = array(
        'posts_per_page' => $posts_per_page - $count,
        'tag' => $model
    );
    $posts_by_model = new WP_Query( $args );

    // Posts by model have been found, display them
    if ( $posts_by_model->have_posts() ) {
        while( $posts_by_model->have_posts() ) { $posts_by_model->the_post();
            $count++;
            get_template_part( 'template-parts/molecule/card', 'vertical' );
        }
    }

    // We still don't have 6 posts, let's add some more posts by brand
    if ( $count < $posts_per_page ) {

        $args = array(
            'posts_per_page' => $posts_per_page - $count,
            'tag' => $brand
        );
        $posts_by_brand = new WP_Query( $args );

        // Posts by model have been found, display them
        if ( $posts_by_brand->have_posts() ) {
            while( $posts_by_brand->have_posts() ) { $posts_by_brand->the_post();
                $count++;
                get_template_part( 'template-parts/molecule/card', 'vertical' );
            }
        }

    }

}

// Reset original post object
wp_reset_postdata();