Question 166791 in Wordpress Question posted in
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Can hashtags & cashtags be linked in WordPress comments?

Ok, so I have managed to make it work for the_content, by adding this line in functions.php:

add_filter('the_content', 'my_hashcash_class');
function my_hashcash_class($content){   
    $content = preg_replace('/($|#)(w+)[^w".;]/s', '<a href="https://www.mywebsite.com/?s=2">12</a> ', $content);
    return $content;
}

The above code works perfectly with the WordPress filter the_content

But when I’m trying to do the same for comments with the_comments, I’m getting an error:

There has been a critical error on this website.

Learn more about debugging in WordPress.

Comments are not even displayed.

Here’s my comments code:

add_filter('the_comments', 'my_hashcash_comments_class');
function my_hashcash_comments_class($comments){
    $comments = preg_replace('/($|#)(w+)[^w".;]/s', '<a href="https://www.mywebsite.com/?s=2">12</a> ', $comments);
    return $comments;
}

Maybe WordPress is trying to apply the filter for commenter user name, avatar, and all that other stuff.

I want the filter to be applied only to the comment content itself.

Any help would be appreciated.

thanks.

Tags:

2

Answers


  1. 0

    Try the below code. the "$comments" parameter is an array object of WP_Comment Object so you have access by loop.

    add_filter('the_comments', 'my_hashcash_comments_class');
function my_hashcash_comments_class($comments){
    foreach ( $comments  as $key => $comment ) {
        $comments[$key]->comment_content = preg_replace( '/($|#)(w+)[^w".;]/s', '<a href="https://www.mywebsite.com/?s=2">12</a>', $comment->comment_content );
    }
    return $comments;
}
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  2. 0

    I do not WP, but judging my Bhautik’s answer, you are dealing with an array of objects. Because objects remain mutable in a loop, you can apply the change directly to the object without referring to it by its key.

    Your regex pattern could do with some refinement. When matching a literal $ and #, just put them in a character class and avoid the piping and escaping.

    The w+ is appropriate, but the following negated character class is not necessary. In fact, it will cause your pattern to fail if the very last character in the string are still the w of the hash/cash substring.

    The s pattern modifier is only of any value if you have a non-literal . in your pattern. You do not, so there is no use to the pattern modifier — omit it.

    Code: (Demo)

    $comments = [
    (object)['comment_content' => 'Hello $there fella'],
    (object)['comment_content' => 'Hashy #tag123 text']
];

foreach ($comments as $comment) {
    $comment->comment_content = preg_replace(
        '~[$#](w+)~',
        '<a href="https://www.example.com/?s=1"></a>',
        $comment->comment_content
    );
}
var_export($comments);

    Output:

    array (
  0 => 
  (object) array(
     'comment_content' => 'Hello <a href="https://www.example.com/?s=there">$there</a> fella',
  ),
  1 => 
  (object) array(
     'comment_content' => 'Hashy <a href="https://www.example.com/?s=tag123">#tag123</a> text',
  ),
)
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