WordPress去掉链接category方法

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WordPress默认分类目录链接会带有category ， 为了链接扁平化，层级不超过三级，更有利于Seo优化，所以要删掉category层级。

在主题文件functions.php中加上下面代码即可。

1. //删除链接category目录
   
2. add_action( 'load-themes.php',  'no_category_base_refresh_rules');
   
3. add_action('created_category', 'no_category_base_refresh_rules');
   
4. add_action('edited_category', 'no_category_base_refresh_rules');
   
5. add_action('delete_category', 'no_category_base_refresh_rules');
   
6. function no_category_base_refresh_rules() {
   
7.     global $wp_rewrite;
   
8.     $wp_rewrite -> flush_rules();
   
9. }
   
10. // register_deactivation_hook(__FILE__, 'no_category_base_deactivate');
    
11. // function no_category_base_deactivate() {
    
12. //  remove_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');
    
13. //  // We don't want to insert our custom rules again
    
14. //  no_category_base_refresh_rules();
    
15. // }
    
16. // Remove category base
    
17. add_action('init', 'no_category_base_permastruct');
    
18. function no_category_base_permastruct() {
    
19.     global $wp_rewrite, $wp_version;
    
20.     if (version_compare($wp_version, '3.4', '<')) {
    
21.         // For pre-3.4 support
    
22.         $wp_rewrite -> extra_permastructs['category'][0] = '%category%';
    
23.     } else {
    
24.         $wp_rewrite -> extra_permastructs['category']['struct'] = '%category%';
    
25.     }
    
26. }
    
27. // Add our custom category rewrite rules
    
28. add_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');
    
29. function no_category_base_rewrite_rules($category_rewrite) {
    
30.     //var_dump($category_rewrite); // For Debugging
    
31.     $category_rewrite = array();
    
32.     $categories = get_categories(array('hide_empty' => false));
    
33.     foreach ($categories as $category) {
    
34.         $category_nicename = $category -> slug;
    
35.         if ($category -> parent == $category -> cat_ID)// recursive recursion
    
36.             $category -> parent = 0;
    
37.         elseif ($category -> parent != 0)
    
38.             $category_nicename = get_category_parents($category -> parent, false, '/', true) . $category_nicename;
    
39.         $category_rewrite['(' . $category_nicename . ')/(?:feed/)?(feed|rdf|rss|rss2|atom)/?] = 'index.php?category_name=$matches[1]&feed=$matches[2]';
    
40.         $category_rewrite['(' . $category_nicename . ')/page/?([0-9]{1,})/?] = 'index.php?category_name=$matches[1]&paged=$matches[2]';
    
41.         $category_rewrite['(' . $category_nicename . ')/?] = 'index.php?category_name=$matches[1]';
    
42.     }
    
43.     // Redirect support from Old Category Base
    
44.     global $wp_rewrite;
    
45.     $old_category_base = get_option('category_base') ? get_option('category_base') : 'category';
    
46.     $old_category_base = trim($old_category_base, '/');
    
47.     $category_rewrite[$old_category_base . '/(.*)] = 'index.php?category_redirect=$matches[1]';
    
48.     //var_dump($category_rewrite); // For Debugging
    
49.     return $category_rewrite;
    
50. }
    
51. // Add 'category_redirect' query variable
    
52. add_filter('query_vars', 'no_category_base_query_vars');
    
53. function no_category_base_query_vars($public_query_vars) {
    
54.     $public_query_vars[] = 'category_redirect';
    
55.     return $public_query_vars;
    
56. }
    
57. // Redirect if 'category_redirect' is set
    
58. add_filter('request', 'no_category_base_request');
    
59. function no_category_base_request($query_vars) {
    
60.     //print_r($query_vars); // For Debugging
    
61.     if (isset($query_vars['category_redirect'])) {
    
62.         $catlink = trailingslashit(get_option('home')) . user_trailingslashit($query_vars['category_redirect'], 'category');
    
63.         status_header(301);
    
64.         header("Location: $catlink");
    
65.         exit();
    
66.     }
    
67.     return $query_vars;
    
68. }

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