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Is there any way to customize wordpress twentytwelve_comment function to change default comment author meta details.

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The quick answer would probably be 'yes' – although it is not recommended to customize a wordpress function directly a.k.a. "hack the core".

I would strongly recommend you use a child theme to override the comments template "comments.php" which is afaik the only template actually using the function twentytwelve_comment. You could then call your own comments function inside your custom child template "comments.php" instead of calling the default twentytwelve_comment.

A good strat to find out more about creating child themes would be the codex: https://codex.wordpress.org/Child_Themes or you could download a 'bones' child theme of twentytwelve over here: http://hyperlinkcode.com/blog/free-bare-bones-child-theme-for-twenty-twelve/. Then simply copy the template "comments.php" into your child theme directory and adjust it according to your preferences.

To be a bit more specific:

Open the file 'functions.php' from your parent theme foder. Around line 258 you should see the beginning of the function "twentytwelve_comment" like this:

if ( ! function_exists( 'twentytwelve_comment' ) ) :

Copy the function to your 'functions.php' inside your child theme and rename it so it does not interfear with the original function – for example "mytheme_comment".

Then copy the comments tempate "comments.php" to your child theme. Inside the template around line 37 you need to change what function is called to actually list the comments.

Before:

<?php wp_list_comments( array( 'callback' => 'twentytwelve_comment', 'style' => 'ol' ) ); ?>

After:

<?php wp_list_comments( array( 'callback' => 'mytheme_comment', 'style' => 'ol' ) ); ?>

Now you could basically make whatever change to your comments function "mytheme_comment" without changing the parent theme…

  • I am already using child theme. But kindly tell me how to do this. – PARVINDER Jun 28 '16 at 14:50
  • I added some more details above – hope this helps to get you started… – tillinberlin Jun 28 '16 at 15:39

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