Title: Custom comment form changing callback
Last modified: August 20, 2016

---

# Custom comment form changing callback

 *  [vdenotaris](https://wordpress.org/support/users/vdenotaris/)
 * (@vdenotaris)
 * [13 years, 4 months ago](https://wordpress.org/support/topic/custom-comment-form-changing-callback/)
 * Hi all,
 * Is it possible to customize comment_form() changing the callback?
 * I have this function in functions.php:
 *     ```
       function custom_comment_form( $args = array(), $post_id = null ) {
           global $user_identity, $id;
   
           if ( null === $post_id )
               $post_id = $id;
           else
               $id = $post_id;
   
           $commenter = wp_get_current_commenter();
   
           $req = get_option( 'require_name_email' );
           $aria_req = ( $req ? " aria-required='true'" : '' );
           $fields =  array(
               'author' => '<p class="comment-form-author">' . '<label for="author">' . __( 'Name' ) . '</label> ' . ( $req ? '<span class="required">*</span>' : '' ) .
                           '<input id="author" name="author" type="text" value="' . esc_attr( $commenter['comment_author'] ) . '" size="30"' . $aria_req . ' /></p>',
               'email'  => '<p class="comment-form-email"><label for="email">' . __( 'Email' ) . '</label> ' . ( $req ? '<span class="required">*</span>' : '' ) .
                           '<input id="email" name="email" type="text" value="' . esc_attr(  $commenter['comment_author_email'] ) . '" size="30"' . $aria_req . ' /></p>',
               'url'    => '<p class="comment-form-url"><label for="url">' . __( 'Website' ) . '</label>' .
                           '<input id="url" name="url" type="text" value="' . esc_attr( $commenter['comment_author_url'] ) . '" size="30" /></p>',
           );
   
           $required_text = sprintf( ' ' . __('Required fields are marked %s'), '<span class="required">*</span>' );
           $defaults = array(
               'fields'               => apply_filters( 'comment_form_default_fields', $fields ),
               'comment_field'        => '<p class="comment-form-comment"><label for="comment">' . _x( 'Comment', 'noun' ) . '</label><textarea id="comment" name="comment" cols="45" rows="8" aria-required="true"></textarea></p>',
               'must_log_in'          => '<p class="must-log-in">' .  sprintf( __( 'You must be <a href="%s">logged in</a> to post a comment.' ), wp_login_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
               'logged_in_as'         => '<p class="logged-in-as">' . sprintf( __( 'Logged in as <a href="%1$s">%2$s</a>. <a href="%3$s" title="Log out of this account">Log out?</a>' ), admin_url( 'profile.php' ), $user_identity, wp_logout_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
               'comment_notes_before' => '<p class="comment-notes">' . __( 'Your email address will not be published.' ) . ( $req ? $required_text : '' ) . '</p>',
               'comment_notes_after'  => '<p class="form-allowed-tags">' . sprintf( __( 'You may use these <abbr title="HyperText Markup Language">HTML</abbr> tags and attributes: %s' ), ' <code>' . allowed_tags() . '</code>' ) . '</p>',
               'id_form'              => 'commentform',
               'id_submit'            => 'submit',
               'class_submit'         => 'submit',
               'title_reply'          => __( 'Leave a Reply' ),
               'title_reply_to'       => __( 'Leave a Reply to %s' ),
               'cancel_reply_link'    => __( 'Cancel reply' ),
               'label_submit'         => __( 'Post Comment' ),
           );
   
           $args = wp_parse_args( $args, apply_filters( 'comment_form_defaults', $defaults ) );
   
           ?>
               <?php if ( comments_open() ) : ?>
                   <?php do_action( 'comment_form_before' ); ?>
                   <div id="respond">
                       <h3 id="reply-title"><?php comment_form_title( $args['title_reply'], $args['title_reply_to'] ); ?> <small><?php cancel_comment_reply_link( $args['cancel_reply_link'] ); ?></small></h3>
                       <?php if ( get_option( 'comment_registration' ) && !is_user_logged_in() ) : ?>
                           <?php echo $args['must_log_in']; ?>
                           <?php do_action( 'comment_form_must_log_in_after' ); ?>
                       <?php else : ?>
                           <form action="<?php echo site_url( '/wp-comments-post.php' ); ?>" method="post" id="<?php echo esc_attr( $args['id_form'] ); ?>">
                               <?php do_action( 'comment_form_top' ); ?>
                               <?php if ( is_user_logged_in() ) : ?>
                                   <?php echo apply_filters( 'comment_form_logged_in', $args['logged_in_as'], $commenter, $user_identity ); ?>
                                   <?php do_action( 'comment_form_logged_in_after', $commenter, $user_identity ); ?>
                               <?php else : ?>
                                   <?php echo $args['comment_notes_before']; ?>
                                   <?php
                                   do_action( 'comment_form_before_fields' );
                                   foreach ( (array) $args['fields'] as $name => $field ) {
                                       echo apply_filters( "comment_form_field_{$name}", $field ) . "\n";
                                   }
                                   do_action( 'comment_form_after_fields' );
                                   ?>
                               <?php endif; ?>
                               <?php echo apply_filters( 'comment_form_field_comment', $args['comment_field'] ); ?>
                               <?php echo $args['comment_notes_after']; ?>
                               <p class="form-submit">
                                   <input name="submit" type="submit" class="btn btn-primary" id="<?php echo esc_attr( $args['id_submit'] ); ?>" class="<?php echo esc_attr( $args['class_submit'] ); ?>" value="<?php echo esc_attr( $args['label_submit'] ); ?>" />
                                   <?php comment_id_fields(); ?>
                               </p>
                               <?php do_action( 'comment_form', $post_id ); ?>
                           </form>
                       <?php endif; ?>
                   </div><!-- #respond -->
                   <?php do_action( 'comment_form_after' ); ?>
               <?php else : ?>
                   <?php do_action( 'comment_form_comments_closed' ); ?>
               <?php endif; ?>
           <?php
       }
       ```
   
 * I would like to override default template and to use mine.
 * `<?php comment_form( array( 'callback' => 'custom_comment_form' ) ); ?>`
 * I tried the code above in comments.php but won’t works.
    Do you have some suggestions?
   Thank you so much, Vi.

Viewing 1 replies (of 1 total)

 *  Thread Starter [vdenotaris](https://wordpress.org/support/users/vdenotaris/)
 * (@vdenotaris)
 * [13 years, 4 months ago](https://wordpress.org/support/topic/custom-comment-form-changing-callback/#post-3417362)
 * I’m wrong. I just understand that there is not a callback for comment_form().
   
   How could I, for example, add class to submit button?

Viewing 1 replies (of 1 total)

The topic ‘Custom comment form changing callback’ is closed to new replies.

## Tags

 * [comment](https://wordpress.org/support/topic-tag/comment/)
 * [comment_form](https://wordpress.org/support/topic-tag/comment_form/)
 * [custom](https://wordpress.org/support/topic-tag/custom/)

 * 1 reply
 * 1 participant
 * Last reply from: [vdenotaris](https://wordpress.org/support/users/vdenotaris/)
 * Last activity: [13 years, 4 months ago](https://wordpress.org/support/topic/custom-comment-form-changing-callback/#post-3417362)
 * Status: not resolved

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