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WP：如何在functions.php中包含一個類（php文件），而不是將它寫成functions.php中的（長）函數

2017-10-18 85 views
0

我想向我的WP主題添加麪包屑功能（沒有任何插件請）。WP：如何在functions.php中包含一個類（php文件），而不是將它寫成functions.php中的（長）函數

我下面這個教程，工作得很好： https://www.thewebtaylor.com/articles/wordpress-creating-breadcrumbs-without-a-plugin

相反，它複製到我的functions.php的，因爲它是現在，我決定這將是一個更好的做法是在外部包括它，因爲我做了「 walker.php「： http://simonpadbury.github.io/2016/03/09/bootstrap-4-navbar-with-dropdowns-for-wordpress.html - 這裏是一個視頻教程是否有人intrested：Part1 & Part2

我該怎麼做這個正常嗎？

這是如何我包括functions.php類：

/* 
    =============== 
    Add Breadcrumbs 
    =============== 
*/ 
require get_template_directory() . '/inc/breadcrumbs.php';

這是我/inc/breadcrumbs.php文件：

<?php 


class Breadcrumbs { 

    // Settings 
    $separator   = '&gt;'; 
    $breadcrums_id  = 'breadcrumbs'; 
    $breadcrums_class = 'breadcrumbs'; 
    $home_title   = 'Homepage'; 

    // If you have any custom post types with custom taxonomies, put the taxonomy name below (e.g. product_cat) 
    $custom_taxonomy = 'product_cat'; 

    // Get the query & post information 
    global $post,$wp_query; 

    // Do not display on the homepage 
    if (!is_front_page()) { 

     // Build the breadcrums 
     echo '<ul id="' . $breadcrums_id . '" class="' . $breadcrums_class . '">'; 

     // Home page 
     echo '<li class="item-home"><a class="bread-link bread-home" href="' . get_home_url() . '" title="' . $home_title . '">' . $home_title . '</a></li>'; 
     echo '<li class="separator separator-home"> ' . $separator . ' </li>'; 

     if (is_archive() && !is_tax() && !is_category() && !is_tag()) { 

      echo '<li class="item-current item-archive"><strong class="bread-current bread-archive">' . post_type_archive_title($prefix, false) . '</strong></li>'; 

     } else if (is_archive() && is_tax() && !is_category() && !is_tag()) { 

      // If post is a custom post type 
      $post_type = get_post_type(); 

      // If it is a custom post type display name and link 
      if($post_type != 'post') { 

       $post_type_object = get_post_type_object($post_type); 
       $post_type_archive = get_post_type_archive_link($post_type); 

       echo '<li class="item-cat item-custom-post-type-' . $post_type . '"><a class="bread-cat bread-custom-post-type-' . $post_type . '" href="' . $post_type_archive . '" title="' . $post_type_object->labels->name . '">' . $post_type_object->labels->name . '</a></li>'; 
       echo '<li class="separator"> ' . $separator . ' </li>'; 

      } 

      $custom_tax_name = get_queried_object()->name; 
      echo '<li class="item-current item-archive"><strong class="bread-current bread-archive">' . $custom_tax_name . '</strong></li>'; 

     } else if (is_single()) { 

      // If post is a custom post type 
      $post_type = get_post_type(); 

      // If it is a custom post type display name and link 
      if($post_type != 'post') { 

       $post_type_object = get_post_type_object($post_type); 
       $post_type_archive = get_post_type_archive_link($post_type); 

       echo '<li class="item-cat item-custom-post-type-' . $post_type . '"><a class="bread-cat bread-custom-post-type-' . $post_type . '" href="' . $post_type_archive . '" title="' . $post_type_object->labels->name . '">' . $post_type_object->labels->name . '</a></li>'; 
       echo '<li class="separator"> ' . $separator . ' </li>'; 

      } 

      // Get post category info 
      $category = get_the_category(); 

      if(!empty($category)) { 

       // Get last category post is in 
       $last_category = end(array_values($category)); 

       // Get parent any categories and create array 
       $get_cat_parents = rtrim(get_category_parents($last_category->term_id, true, ','),','); 
       $cat_parents = explode(',',$get_cat_parents); 

       // Loop through parent categories and store in variable $cat_display 
       $cat_display = ''; 
       foreach($cat_parents as $parents) { 
        $cat_display .= '<li class="item-cat">'.$parents.'</li>'; 
        $cat_display .= '<li class="separator"> ' . $separator . ' </li>'; 
       } 

      } 

      // If it's a custom post type within a custom taxonomy 
      $taxonomy_exists = taxonomy_exists($custom_taxonomy); 
      if(empty($last_category) && !empty($custom_taxonomy) && $taxonomy_exists) { 

       $taxonomy_terms = get_the_terms($post->ID, $custom_taxonomy); 
       $cat_id   = $taxonomy_terms[0]->term_id; 
       $cat_nicename = $taxonomy_terms[0]->slug; 
       $cat_link  = get_term_link($taxonomy_terms[0]->term_id, $custom_taxonomy); 
       $cat_name  = $taxonomy_terms[0]->name; 

      } 

      // Check if the post is in a category 
      if(!empty($last_category)) { 
       echo $cat_display; 
       echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '" title="' . get_the_title() . '">' . get_the_title() . '</strong></li>'; 

      // Else if post is in a custom taxonomy 
      } else if(!empty($cat_id)) { 

       echo '<li class="item-cat item-cat-' . $cat_id . ' item-cat-' . $cat_nicename . '"><a class="bread-cat bread-cat-' . $cat_id . ' bread-cat-' . $cat_nicename . '" href="' . $cat_link . '" title="' . $cat_name . '">' . $cat_name . '</a></li>'; 
       echo '<li class="separator"> ' . $separator . ' </li>'; 
       echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '" title="' . get_the_title() . '">' . get_the_title() . '</strong></li>'; 

      } else { 

       echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '" title="' . get_the_title() . '">' . get_the_title() . '</strong></li>'; 

      } 

     } else if (is_category()) { 

      // Category page 
      echo '<li class="item-current item-cat"><strong class="bread-current bread-cat">' . single_cat_title('', false) . '</strong></li>'; 

     } else if (is_page()) { 

      // Standard page 
      if($post->post_parent){ 

       // If child page, get parents 
       $anc = get_post_ancestors($post->ID); 

       // Get parents in the right order 
       $anc = array_reverse($anc); 

       // Parent page loop 
       if (!isset($parents)) $parents = null; 
       foreach ($anc as $ancestor) { 
        $parents .= '<li class="item-parent item-parent-' . $ancestor . '"><a class="bread-parent bread-parent-' . $ancestor . '" href="' . get_permalink($ancestor) . '" title="' . get_the_title($ancestor) . '">' . get_the_title($ancestor) . '</a></li>'; 
        $parents .= '<li class="separator separator-' . $ancestor . '"> ' . $separator . ' </li>'; 
       } 

       // Display parent pages 
       echo $parents; 

       // Current page 
       echo '<li class="item-current item-' . $post->ID . '"><strong title="' . get_the_title() . '"> ' . get_the_title() . '</strong></li>'; 

      } else { 

       // Just display current page if not parents 
       echo '<li class="item-current item-' . $post->ID . '"><strong class="bread-current bread-' . $post->ID . '"> ' . get_the_title() . '</strong></li>'; 

      } 

     } else if (is_tag()) { 

      // Tag page 

      // Get tag information 
      $term_id  = get_query_var('tag_id'); 
      $taxonomy  = 'post_tag'; 
      $args   = 'include=' . $term_id; 
      $terms   = get_terms($taxonomy, $args); 
      $get_term_id = $terms[0]->term_id; 
      $get_term_slug = $terms[0]->slug; 
      $get_term_name = $terms[0]->name; 

      // Display the tag name 
      echo '<li class="item-current item-tag-' . $get_term_id . ' item-tag-' . $get_term_slug . '"><strong class="bread-current bread-tag-' . $get_term_id . ' bread-tag-' . $get_term_slug . '">' . $get_term_name . '</strong></li>'; 

     } elseif (is_day()) { 

      // Day archive 

      // Year link 
      echo '<li class="item-year item-year-' . get_the_time('Y') . '"><a class="bread-year bread-year-' . get_the_time('Y') . '" href="' . get_year_link(get_the_time('Y')) . '" title="' . get_the_time('Y') . '">' . get_the_time('Y') . ' Archives</a></li>'; 
      echo '<li class="separator separator-' . get_the_time('Y') . '"> ' . $separator . ' </li>'; 

      // Month link 
      echo '<li class="item-month item-month-' . get_the_time('m') . '"><a class="bread-month bread-month-' . get_the_time('m') . '" href="' . get_month_link(get_the_time('Y'), get_the_time('m')) . '" title="' . get_the_time('M') . '">' . get_the_time('M') . ' Archives</a></li>'; 
      echo '<li class="separator separator-' . get_the_time('m') . '"> ' . $separator . ' </li>'; 

      // Day display 
      echo '<li class="item-current item-' . get_the_time('j') . '"><strong class="bread-current bread-' . get_the_time('j') . '"> ' . get_the_time('jS') . ' ' . get_the_time('M') . ' Archives</strong></li>'; 

     } else if (is_month()) { 

      // Month Archive 

      // Year link 
      echo '<li class="item-year item-year-' . get_the_time('Y') . '"><a class="bread-year bread-year-' . get_the_time('Y') . '" href="' . get_year_link(get_the_time('Y')) . '" title="' . get_the_time('Y') . '">' . get_the_time('Y') . ' Archives</a></li>'; 
      echo '<li class="separator separator-' . get_the_time('Y') . '"> ' . $separator . ' </li>'; 

      // Month display 
      echo '<li class="item-month item-month-' . get_the_time('m') . '"><strong class="bread-month bread-month-' . get_the_time('m') . '" title="' . get_the_time('M') . '">' . get_the_time('M') . ' Archives</strong></li>'; 

     } else if (is_year()) { 

      // Display year archive 
      echo '<li class="item-current item-current-' . get_the_time('Y') . '"><strong class="bread-current bread-current-' . get_the_time('Y') . '" title="' . get_the_time('Y') . '">' . get_the_time('Y') . ' Archives</strong></li>'; 

     } else if (is_author()) { 

      // Auhor archive 

      // Get the author information 
      global $author; 
      $userdata = get_userdata($author); 

      // Display author name 
      echo '<li class="item-current item-current-' . $userdata->user_nicename . '"><strong class="bread-current bread-current-' . $userdata->user_nicename . '" title="' . $userdata->display_name . '">' . 'Author: ' . $userdata->display_name . '</strong></li>'; 

     } else if (get_query_var('paged')) { 

      // Paginated archives 
      echo '<li class="item-current item-current-' . get_query_var('paged') . '"><strong class="bread-current bread-current-' . get_query_var('paged') . '" title="Page ' . get_query_var('paged') . '">'.__('Page') . ' ' . get_query_var('paged') . '</strong></li>'; 

     } else if (is_search()) { 

      // Search results page 
      echo '<li class="item-current item-current-' . get_search_query() . '"><strong class="bread-current bread-current-' . get_search_query() . '" title="Search results for: ' . get_search_query() . '">Search results for: ' . get_search_query() . '</strong></li>'; 

     } elseif (is_404()) { 

      // 404 page 
      echo '<li>' . 'Error 404' . '</li>'; 
     } 

     echo '</ul>'; 

    } 


}

來源

2017-10-18 Rick Sanchez

+1

這個問題有點不清楚。你沒有提到你遇到的任何錯誤或其他類型的問題。我想，無論你做得好是主觀的。 – fiskeben

回答

0

的包括應權。該文件保留在<Theme-dir>/inc/中，幷包含此require。你應該使用require_once，但這不是問題的關鍵。我想你應該使用這個類和他的方法來將breadcrump包含在模板中。目前你包含這個類，但是你不使用這個類的一個輸出方法。

如果我讀了你的代碼，那麼它不是一個類，它應該是一個函數，就像你的參考教程一樣。 class Breadcrunmp {是錯誤的，應該是function Breadcrumbs() {然後你可以在你的模板文件中包含這個函數，比如你的主題的footer.php。

還有一個提示，從數千個提示中，你應該爲函數使用一個前綴，這樣你就不會得到函數的錯誤，而是有一個相同的名字，有時來自一個插件。

來源

2017-10-18 19:49:58 bueltge

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