如何创建短代码以显示每个类别中的所有帖子

Question

我有这个问题：我用他自己的一组类别制作了一个自定义页面。在简码中，我想获取所有类别，在类别中，我想要与该类别相关的所有 post。

function innovatiewerkplaats_sort($atts, $content = null){

    global $post;

    $terms = get_terms('innovatiewerkplaats_categories'); // Get all terms of a taxonomy

    $nieuws = '';

    foreach($terms as $term):
        $nieuws .= '<div class="one">
                        <h2>Thema <strong>'.$term->name.' id='.$term->term_id.'</strong></h2>
                    <div class="wrapper">';

        $category_query_args = array(
            'post_type' => 'innovatiewerkplaats',
            // 'category' => $term->term_id,
            'category_name' => $term->name,
            // 'cat'  => $term->term_id,
        );

        query_posts($category_query_args);

        if( have_posts() ) : while (have_posts()) : the_post();

            $post_home= get_the_post_thumbnail( $page->ID, 'post-home');
            $thumb = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), '' );
            $url = $thumb['0'];
            $excerpt = get_the_content();
            $excerpta = preg_replace("~(?:\[/?)[^/\]]+/?\]~s", '', $excerpt);

            // $ter = wp_trim_words( apply_filters( 'rpwe_excerpt', $excerpta ), $args['length'], '…' );
            $nieuws .= '<a href="'.get_permalink().'" title="'.get_the_title().'" class="one_fourth workplace">'.$term->term_id.'<span class="img" style="background:url('.$url.') no-repeat center center; background-size:cover;"></span><span class="titel">'.get_the_title().'</span><p></p><span class="more">Lees meer</span></a>';

        endwhile; endif;

        $nieuws .='</div></div>';

    endforeach;

    return $nieuws;
}

Answer 1

注意：不要使用 query_post. Use WP_Query or get_posts。

请看讨论When to use WP_query(), query_posts() and pre_get_posts.

这里是与您的问题相关的示例方法，可根据其类别生成所有 post，然后通过简码显示以供日后使用。

在一个函数中，你应该先查询所有的post（使用wp_query或get_posts），
通过查询循环内的 post id 获取相关类别。如果术语分类法，请使用 get_the_terms.
使用键（在本例中，我们使用术语 slug）构建查询数据数组以对 posts 进行分组。
然后将这些数据用于外循环，并用简单的循环。
通过函数 add_shortcode 构建简码（此代码仅使用简单的简码）。

/** Shortcode [my_shortcode_posts] */
add_shortcode( 'my_shortcode_posts', 'so36133962_get_all_posts_by_category' );

/**
 * All posts by category
 * build query by get_posts
 *
 * @return string|null
 */
function so36133962_get_all_posts_by_category( $attr, $content = null )
{
    /**
     * Build custom query
     *
     */
    $args = array(
        'post_type'      => 'your-post-type', // set your custom post type
        'post_status'    => 'publish',
        'posts_per_page' => -1,
        /** add more arguments such as taxonomy query i.e:

                'tax_query' => array( array(
                    'taxonomy' => 'genre', // set your taxonomy
                    'field'    => 'slug',
                    'terms'    => array( 'comedy','drama' ) // set your term taxonomy
                ) )
        */
    );

    $posts = new WP_Query( $args );

    /**
     * Prepare Posts
     *
     */
    $result = array();

    // The Loop
    if ( $posts->have_posts() )
    {
        while ( $posts->have_posts() )
        {
            $posts->the_post();
            /**
             * Get all item in a term taxonomy
             *
             */
            $categories = get_the_terms( get_the_ID(), 'your-taxonomy' /* set your term taxonomy */ );
            if ( ! $categories )
                continue;

            foreach ( $categories as $key => $category )
            {
                $term_name = $category->name;
                $term_slug = $category->slug;
                $term_id   = $category->term_id;
            }

            /**
             * Set thumbnail background cover
             * Use Featured Image
             */
            $img_cover = '';
            if ( has_post_thumbnail() )
            {
                $image_url = wp_get_attachment_image_src( get_post_thumbnail_id( get_the_ID() ) );
                if ( ! empty( $image_url[0] ) )
                {
                    $img_cover = '<span class="img" style="background:url( ' . esc_url( $image_url[0] ) . ' ) no-repeat center center; background-size:cover;">';
                }
            }

            /**
             * Format html content
             *
             */
            $format = '<a href="%1$s" title="%2$s" class="post-%3$s">%4$s%2$s</span></br><span class="content-%3$s">%5$s</span></br><span class="more">%6$s</span></a>';

            /**
             * Formatted string post content
             *
             */
            $content = sprintf( $format,
                get_permalink(),
                get_the_title(),
                get_the_ID(),
                $img_cover,
                get_the_excerpt(),
                __( 'Read More', 'text-domain' )
            );

            /**
             * Set an array of each post for output loop
             *
             */
            $result[ $term_slug ][] = array(
                'post_id'      => get_the_ID(),
                'post_content' => $content,
                'term_name'    => $term_name,
                'term_id'      => $term_id
            );
        }
    }
    wp_reset_postdata(); // post reset

    /**
     * Check existing output
     *
     */
    if ( ! $result )
        return;

    /**
     * Output loop
     *
     */
    $output = '';
    foreach ( $result as $slug => $data )
    {
        $count = count( $data );
        for ( $i = 0; $i < $count; $i++ )
        {
            /**
             * Set data as object
             *
             */
            $post = ( object ) array_map( 'trim', $data[ $i ] );

            if ( 0 == $i )
            {
                /**
                 * Set category id and name
                 *
                 */
                $output .= '<div id="term-category-' . absint( $post->term_id ) . '">';
                $output .= '<h3>' . esc_html( $post->term_name ) . '</h3>';
            }

            /**
             * Set post id and content
             *
             */
            $output .= '<div id="post-' . absint( $post->post_id ) . '"><p>' . $post->post_content . '</p></div>';
        }

        $output .= '</div>';
    }

    return $output; // complete
}

您可以根据需要更改元素结构。请注意，使用此代码，每个类别中没有重复的 post，并确保更改代码中注释的 post 类型和分类等值。希望对您有所帮助。

如何创建短代码以显示每个类别中的所有帖子

How to create shortcode to display all posts in each category

php

wordpress

shortcode