Redirect comment permalink to their corresponding node paths

Question

Is there any way in drupal to redirect comment permalink to their corresponding node paths or url alias?

I want to redirect all comment/x paths to their corresponding node-path. And it should handle pagers as well. If your comment is in the second page (when you have set a comments-per-page value in node type settings), it should be like

http://example.com/comment/111 to http://example.com/node/123?page=1#comment-111

http://example.com/comment/111 to http://example.com/node/123#comment-111
http://example.com/comment/112 to http://example.com/node/123#comment-112

Thanks in Advance!

Answer 1

I managed to acheive it through hook_menu_alter. It just works great for me

<?php
/**
* Implements hook_menu_alter.
* @author Md Eqbal Ahmad <*****@******.com>
*/
function MODULE_menu_alter(&$items) {
  $items['comment/%']['page callback'] = 'MODULE_commentpermalink';
}

/**
 * Redirect comment permalink to their corresponding node paths
 * @author Md Eqbal Ahmad <*****@*****.com>
*/
function MODULE_commentpermalink($cid) {
  if (($comment = comment_load($cid)) && ($node = node_load($comment->nid))) {
    // Find the current display page for this comment.
    $page = comment_get_display_page($comment->cid, $node->type);
    // Now, rather than setting menu_executive_active_handler and changin $_GET valies, we redirect them to the actual node URL with fragments and pager set.
    if ($page > 0) {
      drupal_goto("node/$comment->nid", array('fragment'=>"comment-$comment->cid",'query'=>array('page'=>$page)), 301);
    }
    else{
      drupal_goto("node/$comment->nid", array('fragment'=>"comment-$comment->cid"), 301);
    }
  }
  drupal_not_found();
}

?>

Answer 2

Try it using hook_preprocess_page :

function MODULE_preprocess_page(&$vars) {
      if (arg(0) == 'comment') {
        $cid = arg(1);
        if (($comment = comment_load($cid)) && ($node = node_load($comment->nid))) {
          // Find the current display page for this comment.
          $page = comment_get_display_page($comment->cid, $node->type);
          // Now, rather than setting menu_executive_active_handler and changin $_GET valies, we redirect them to the actual node URL with fragments and pager set.
          if ($page > 0) {
            drupal_goto("node/$comment->nid", array('fragment'=>"comment-$comment->cid",'query'=>array('page'=>$page)), 301);
          }
          else{
            drupal_goto("node/$comment->nid", array('fragment'=>"comment-$comment->cid"), 301);
          }
        }
        drupal_not_found();
      }
    }