查询字符串参数在重写规则中丢失

我已经成功添加了自定义帖子类型,并且永久链接结构很好用.因此,例如,我有一个自定义帖子类型books,而该书的永久链接为/books/the-dictionary.

我的single-book.php页面模板接受一个letter参数来自定义页面上显示的内容.我希望能够像/book/the-dictionary/q那样链接到此.

我已经在主题的functions.php文件中添加了以下内容:

 function my_init() {
    add_books_rewrite();

function add_books_rewrite() {
    add_rewrite_rule("books/([^/]+)/([^/])/?$", 'index.php?pagename=$matches[1]&letter=$matches[2]', "top");
    global $wp_rewrite;
    $wp_rewrite->flush_rules();
}
function add_books_query_vars($query_vars) {
    $query_vars[] = "letter";
    return $query_vars;
}
add_filter("init", "my_init");
add_filter("query_vars", "add_books_query_vars");
 

使用上面的刷新代码进行了几次尝试,手动进入永久链接设置页面并保存,并修复了正则表达式中的愚蠢错误,但最终我能够通过使用 Jan Fabry的很棒的重写分析器插件.

因此,从这里开始,我认为航行顺利,对吗?是的...不完全是.

当我加载我的网站并转到books/the-dictionary/q时,它确实正确加载了the-dictionary内容,但是丢失了参数.我发现有趣的是,如果加载index.php?pagename=the-dictionary&letter=q,一切都会很好.

要检索参数,我有以下代码:

 global $letter;
echo $letter. " - global";
echo "<br>";
$current_letter = (isset($wp_query->query_vars["letter"]) ? $wp_query->query_vars["letter"] : "all");
echo $current_letter . " - query_vars";
echo "<br><br>";
 

我也一直在看$_SERVER["QUERY_STRING"].当我使用index.php?pagename...&letter...时填充这些,但是当我使用/books/pagename/letter时不会填充.

因此,似乎这里发生了一些事情. WordPress不会完全删除该参数,因为如果我使用适当的querystring变量指定index.php,事情就可以进行了.这似乎表明重写规则无法正常工作.但是,Rewrite Analyzer插件似乎说我已经准备好正确的设置.

对于解决断开连接的问题,我有些困惑.抱歉,如果我缺少明显的内容. ):

I have successfully added a custom post type and the permalink structure works great. So, for instance, I've got a custom post type books, and the permalink to a book is /books/the-dictionary.

My single-book.php page template accepts a letter parameter to customize the content displayed on the page. I'd like to be able to link to this like /book/the-dictionary/q.

I've added the following to my theme's functions.php file:

function my_init() {
    add_books_rewrite();

function add_books_rewrite() {
    add_rewrite_rule("books/([^/]+)/([^/])/?$", 'index.php?pagename=$matches[1]&letter=$matches[2]', "top");
    global $wp_rewrite;
    $wp_rewrite->flush_rules();
}
function add_books_query_vars($query_vars) {
    $query_vars[] = "letter";
    return $query_vars;
}
add_filter("init", "my_init");
add_filter("query_vars", "add_books_query_vars");

It took a few tries with using the flushing code above, manually going to the permalink settings page and saving, and fixing stupid errors in the regex, but eventually I was able to verify that the rewrite was added correctly by using Jan Fabry's fabulous rewrite analyzer plugin.

So, from here I think it's smooth sailing, right? Yeah...not exactly.

When I load up my site and go to books/the-dictionary/q, it does load the-dictionary content correctly, but it is losing the parameter. The thing that I find interesting is that if I load index.php?pagename=the-dictionary&letter=q, everything works great.

To retrieve the parameter, I have the following code:

global $letter;
echo $letter. " - global";
echo "<br>";
$current_letter = (isset($wp_query->query_vars["letter"]) ? $wp_query->query_vars["letter"] : "all");
echo $current_letter . " - query_vars";
echo "<br><br>";

I've also been looking at $_SERVER["QUERY_STRING"]. These are populated when I use index.php?pagename...&letter..., but not when I use /books/pagename/letter.

So, it seems like a few things are happening here. WordPress isn't completely dropping the parameter since things work if I specify index.php with the appropriate querystring variables. This seems to indicate the rewrite rule isn't working correctly. However, the Rewrite Analyzer plugin seems to say things are set up properly for what I'm going for.

I'm a bit confused at what I should be looking at here to fix the disconnect. Sorry if I'm missing something obvious. ):