我的脑袋在这段代码上打转。我正在尝试向现有插件的快捷码添加功能，以便仅显示包含特定类别名称的特定自定义帖子类型。

到目前为止，我有：

   public function shortcode_litters( $args ) {

    $output = \'\';
    $atts = shortcode_atts( array(
            \'category\' => \'\'
    ), $atts );
    $terms = get_terms(\'product_category\');
            wp_reset_query();

    $query_args = array( 
        \'post_type\'         => \'litter\',
        \'post_status\'       => \'publish\',
        \'orderby\'           => \'date\',
        \'order\'             => \'asc\',
        \'numberposts\'       => -1,
        \'tax_query\' => array(
                 array(
                    \'taxonomy\' => \'product_category\',
                    \'field\' => \'slug\',
                    \'terms\' => $atts,
                ),
             ),

    );

    $litters = get_posts($query_args);

    if($litters) {

        $columns = empty($args["columns"]) ? 2 : $args["columns"];

        $output .= \'<div class="breedr"><ul class="columns \'.number_to_words($columns).\'">\';

        foreach ( $litters as $litter ) {
            $output .= $this->breedr_template( plugin_dir_path( dirname( __FILE__ ) ) . \'public/partials/list-single-litter.php\', $litter );
        }

        $output .= \'</ul></div>\';

    }
    else {
        $output .= "<span>No litter found.</span>";
    }

    return $output;
}

最初是这样的：

  public function shortcode_litters( $args ) {

    $output = \'\';
    $query_from_date = strtotime(date("Y-m-d", strtotime("-3 months")));

    $query_args = array( 
        \'post_type\'         => \'litter\',
        \'post_status\'       => \'publish\',
        \'orderby\'           => \'title\',
        \'order\'             => \'asc\',
        \'numberposts\'       => -1
    );

    if(!empty($args[\'show\']) && in_array($args[\'show\'], array(\'current\', \'past\'))) {
        if ($args[\'show\'] == "current") { 
            $meta_query = array(
                \'meta_query\' => array(
                    array(
                        \'key\'       => \'_litter_mating\',
                        \'value\'     => $query_from_date,
                        \'compare\'   => \'>=\',
                        \'type\'      => \'NUMERIC\'
                    )
                )
            );
        }
        if ($args[\'show\'] == "past") {
            $meta_query = array(
                \'meta_query\' => array(
                    array(
                        \'key\'       => \'_litter_mating\',
                        \'value\'     => $query_from_date,
                        \'compare\'   => \'<\',
                        \'type\'      => \'NUMERIC\'
                    )
                )
            );
        }
    }
    else {
        $meta_query = array(\'meta_query\' => \'\');
    }

    $litters = get_posts($query_args + $meta_query);

    if($litters) {

        $columns = empty($args["columns"]) ? 2 : $args["columns"];

        $output .= \'<div class="breedr"><ul class="columns \'.number_to_words($columns).\'">\';

        foreach ( $litters as $litter ) {
            $output .= $this->breedr_template( plugin_dir_path( dirname( __FILE__ ) ) . \'public/partials/list-single-litter.php\', $litter );
        }

        $output .= \'</ul></div>\';

    }
    else {
        $output .= "<span>No litter found.</span>";
    }

    return $output;
}

从本质上讲，我将短代码从[litters show=""] 到[litters category=""] - 因为我希望它通过快捷码中的类别名称（而不是编号）显示。最初，它有show="" （当前或过去）并确定其基于日期。我想通过快捷码选择一个类别名称，手动确定它是当前的还是过去的。

我整天都在想这个问题，现在我已经脑死亡了。任何帮助都将不胜感激！

[litters category="first_slug,second_slug"]

public function shortcode_litters( $args ) {

    $output = \'\';
    //
    // filter shortcode attributes
    $args = shortcode_atts( 
        array( \'category\' => \'\', \'columns\' => \'\' ), 
        $args 
    );
    if ( strpos( $args[\'category\'], \',\' ) !== false ) {
        $terms = explode( \',\', $args[\'category\'] );
    } else {
        $terms = $args[\'category\'];
    }

    $query_args = array( 
        \'post_type\'         => \'litter\',
        \'post_status\'       => \'publish\',
        \'orderby\'           => \'date\',
        \'order\'             => \'asc\',
        \'numberposts\'       => -1,
        \'tax_query\' => array(
            array(
                \'taxonomy\' => \'product_category\',
                \'field\'    => \'slug\',
                \'terms\'    => $terms,
            ),
        ),
    );