按子類別顯示 wordpress 帖子

Question

我是 wordpress 新手，我使用的是 wordpress 4.5 版，我喜歡按子類別顯示帖子，請任何人幫助我如何做到這一點。 這就是我想要的

家長類別名稱

子類別 1

Post 1

Post 2

子類別 2

Post 3

Post 4

子類別 3

Post 5

Post 6

...

提前致謝

Answer 1

如果我沒有錯，你需要這個，你需要雙循環來獲取子類別下的帖子

這是您獲取當前頁面類別的方式

<?php
    $categories = get_the_category();
    $catID = $categories[0]->cat_ID;
?>

然后使用上面的 catID 執行此操作

<?php 
$subcats = get_categories('child_of=' . $catID);
    foreach($subcats as $subcat) {
        echo '<h3>' . $subcat->cat_name . '</h3>';
        echo '<ul>';
            $subcat_posts = get_posts('cat=' . $subcat->cat_ID);
            foreach($subcat_posts as $subcat_post) {
                $postID = $subcat_post->ID;
                    echo '<li>';
                        echo '<a href="' . get_permalink($postID) . '">';
                        echo get_the_title($postID);
                        echo '</a>';
                    echo '</li>';
            }
        echo '</ul>';
    } 
?>

Answer 2

如果您想顯示所有具有子類別的類別，其各自的子類別具有各自的帖子，只要您知道分類法和帖子類型，您就可以使用以下功能輕松地做到這一點。

例如，如果您有一個名為“books”的自定義帖子類型和一個名為“topic”的自定義分類法來對您的書籍進行分類，

那么你將使用調用這個函數

ow_categories_with_subcategories_and_posts( 'topic', 'book' );

這將顯示所有主題及其各自子類別的列表，然后是屬於每個子類別的書籍。

類似的東西

戲劇

• 戲劇子類別 1

  • 第一本書
  • 書2
  • 書3

• 戲劇子類別2

  • 書 4
  • 書5

喜劇

• 喜劇子類別 1

  • 第六冊
  • 書7

• 喜劇子類別 2

  • 書8
  • 第九冊

以下是這方面的代碼：

function ow_categories_with_subcategories_and_posts( $taxonomy, $post_type ) {

    // Get the top categories that belong to the provided taxonomy (the ones without parent)
    $categories = get_terms( 
        array(
            'taxonomy'   => $taxonomy,
            'parent'     => 0, // <-- No Parent
            'orderby'    => 'term_id',
            'hide_empty' => true // <!-- change to false to also display empty ones
        )
    );
    ?>
    <div>
        <?php
        // Iterate through all categories to display each individual category
        foreach ( $categories as $category ) {

            $cat_name = $category->name;
            $cat_id   = $category->term_id;
            $cat_slug = $category->slug;

            // Display the name of each individual category
            echo '<h3>Category: ' . $cat_name . ' - ID: ' . $cat_id . ' - Slug: ' . $cat_slug  . '</h3>'; 


            // Get all the subcategories that belong to the current category
            $subcategories = get_terms(
                array(
                    'taxonomy'   => $taxonomy,
                    'parent'     => $cat_id, // <-- The parent is the current category
                    'orderby'    => 'term_id',
                    'hide_empty' => true
                )
            );
            ?>
            <div>
                <?php

                // Iterate through all subcategories to display each individual subcategory
                foreach ( $subcategories as $subcategory ) {

                    $subcat_name = $subcategory->name;
                    $subcat_id   = $subcategory->term_id;
                    $subcat_slug = $subcategory->slug;

                    // Display the name of each individual subcategory with ID and Slug
                    echo '<h4>Subcategory: ' . $subcat_name . ' - ID: ' . $subcat_id . ' - Slug: ' . $subcat_slug  . '</h4>';

                    // Get all posts that belong to this specific subcategory
                    $posts = new WP_Query(
                        array(
                            'post_type'      => $post_type,
                            'posts_per_page' => -1, // <-- Show all posts
                            'hide_empty'     => true,
                            'order'          => 'ASC',
                            'tax_query'      => array(
                                array(
                                    'taxonomy' => $taxonomy,
                                    'terms'    => $subcat_id,
                                    'field'    => 'id'
                                )
                            )
                        )
                    );

                    // If there are posts available within this subcategory
                    if ( $posts->have_posts() ):
                        ?>
                        <div>
                            <?php

                            // As long as there are posts to show
                            while ( $posts->have_posts() ): $posts->the_post();

                                //Show the title of each post with the Post ID
                                ?>
                                <p>Post: <?php the_title(); ?> - ID: <?php the_ID(); ?></p>
                                <?php

                            endwhile;
                            ?>
                        </div>
                        <?php
                    else:
                        echo 'No posts found';
                    endif;

                    wp_reset_query();
                }
                ?>
            </div>
            <?php
        }
        ?>
    </div>
    <?php
}

然后，如果您只想獲取與喜劇相關的子類別，並且您想提供“喜劇”slug 作為過濾器以獲得類似以下內容：

• 喜劇子類別 1

  • 第六冊
  • 書7

• 喜劇子類別 2

  • 書8
  • 第九冊

然后你會像這樣調用以下函數：

ow_subcategories_with_posts_by_category( 'topic', 'book', 'comedy' );

這樣做的功能將是：

function ow_subcategories_with_posts_by_category( $taxonomy, $post_type, $term ) {
    $category = get_term_by( 'slug', $term, $taxonomy );
    $cat_id   = $category->term_id;

    // Get all subcategories related to the provided $category ($term)
    $subcategories = get_terms(
        array(
            'taxonomy'   => $taxonomy,
            'parent'     => $cat_id,
            'orderby'    => 'term_id',
            'hide_empty' => true
        )
    );
    ?>
    <div>
        <?php
        // Iterate through all subcategories to display each individual subcategory
        foreach ( $subcategories as $subcategory ) {

            $subcat_name = $subcategory->name;
            $subcat_id   = $subcategory->term_id;
            $subcat_slug = $subcategory->slug;

            // Display the name of each individual subcategory with ID and Slug
            echo '<h4>Subcategory: ' . $subcat_name . ' - ID: ' . $subcat_id . ' - Slug: ' . $subcat_slug  . '</h4>';

            // Get all posts that belong to this specific subcategory
            $posts = new WP_Query(
                array(
                    'post_type'      => $post_type,
                    'posts_per_page' => -1, // <-- Show all posts
                    'hide_empty'     => true,
                    'order'          => 'ASC',
                    'tax_query'      => array(
                        array(
                            'taxonomy' => $taxonomy,
                            'terms'    => $subcat_id,
                            'field'    => 'id'
                        )
                    )
                )
            );

            // If there are posts available within this subcategory
            if ( $posts->have_posts() ):
                ?>
                <div>
                    <?php
                    while ( $posts->have_posts() ): $posts->the_post();

                        //Show the title of each post with the Post ID
                        ?>
                        <p>Post: <?php the_title(); ?> - ID: <?php the_ID(); ?></p>
                        <?php
                    endwhile;
                    ?>
                </div>
                <?php
            else:
                echo 'No posts found';
            endif;

            wp_reset_query();
        }
        ?>
    </div>
    <?php
}