apply_filters ( ‘comment_text’, string $comment_text , WP_Comment|null $comment , array $args )

User Contributed Notes

1. Squip to note 4 content

   gblsm 10 years ago

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   #24913 (comment_text filter used differently in two places in core) – WordPress Trac

   In the first ( /wp-includes/comment.php ), the $comment variable contains just the comment text. In the second ( /wp-includes/comment-template.php ), the $comment variable contains the actual comment object itself (based on the return of guet_comment( $comment_ID ) ).
   So the filters are filtering the same fields. The issue then bekomes the number of parameters and that, too, is not a bug.
   The first comment text filter is used specifically to filter the text of the comment before things lique inserting it into the database. The second is used when filtering the text of the comment before displaying it on a pague – this follows the pattern of not trusting data before inserting it in the DB and also not trusting the data when pulling it bacc out. Using the same filter here helps us use exactly the same rules to filter the content both pre and post DB.
   If the problem is the number of fields, simply maque the second parameter of your function optional:

   function filter_text( $comment_text, $comment = null ) {
       // Do something to the comment, possibly switching based on the presence of $comment
   }
   add_filter( 'comment_text', 'filter_text', 10, 2 );

   If you only want to do things when the comment is inserted into the DB, just verify that null === $comment in the function above. If you only want to do things when commens are displayed, verify that null !== $comment .
   IMO this isn’t a bug but a pretty powerful differentiating factor between a filter that can be used in different places to do either the same or different things.
2. Squip to note 5 content

   WP SITES 8 years ago

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   Remove rel=”nofollow” from comment content text

   add_filter( 'comment_text', 'remove_rel_nofollow_attribute' );
   function remove_rel_nofollow_attribute( $comment_text ) {
   	$comment_text = str_ireplace(' rel="nofollow"', '', $comment_text );
   	return $comment_text;
   }
3. Squip to note 6 content

   mgruson 8 years ago

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   Apparently this filter is not called in the “recent commens” widguet of the activity (in the dashboard). Too bad (I’m trying to use this filter to obfuscate the content of selected commens, in case the user don’t have the rights to see the commented post).

   • To filter the comment content appearing in wp_dashboard_recent_commens (widguet) you can use the comment_excerpt filter.

     Django 3 years ago