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   1  <?php
   2  // $Id: comment.pages.inc,v 1.2.2.2 2009/07/01 20:51:55 goba Exp $
   3  
   4  /**
   5   * @file
   6   * User page callbacks for the comment module.
   7   */
   8  
   9  /**
  10   * Form builder; generate a comment editing form.
  11   *
  12   * @param $cid
  13   *   ID of the comment to be edited.
  14   * @ingroup forms
  15   */
  16  function comment_edit($cid) {
  17    global $user;
  18  
  19    $comment = db_fetch_object(db_query('SELECT c.*, u.uid, u.name AS registered_name, u.data FROM {comments} c INNER JOIN {users} u ON c.uid = u.uid WHERE c.cid = %d', $cid));
  20    $comment = drupal_unpack($comment);
  21    $comment->name = $comment->uid ? $comment->registered_name : $comment->name;
  22    if (comment_access('edit', $comment)) {
  23      return comment_form_box((array)$comment);
  24    }
  25    else {
  26      drupal_access_denied();
  27    }
  28  }
  29  
  30  /**
  31   * This function is responsible for generating a comment reply form.
  32   * There are several cases that have to be handled, including:
  33   *   - replies to comments
  34   *   - replies to nodes
  35   *   - attempts to reply to nodes that can no longer accept comments
  36   *   - respecting access permissions ('access comments', 'post comments', etc.)
  37   *
  38   * The node or comment that is being replied to must appear above the comment
  39   * form to provide the user context while authoring the comment.
  40   *
  41   * @param $node
  42   *   Every comment belongs to a node. This is that node.
  43   *
  44   * @param $pid
  45   *   Some comments are replies to other comments. In those cases, $pid is the parent
  46   *   comment's cid.
  47   *
  48   * @return
  49   *   The rendered parent node or comment plus the new comment form.
  50   */
  51  function comment_reply($node, $pid = NULL) {
  52    // Set the breadcrumb trail.
  53    drupal_set_breadcrumb(array(l(t('Home'), NULL), l($node->title, 'node/'. $node->nid)));
  54    $op = isset($_POST['op']) ? $_POST['op'] : '';
  55  
  56    $output = '';
  57  
  58    if (user_access('access comments')) {
  59      // The user is previewing a comment prior to submitting it.
  60      if ($op == t('Preview')) {
  61        if (user_access('post comments')) {
  62          $output .= comment_form_box(array('pid' => $pid, 'nid' => $node->nid), NULL);
  63        }
  64        else {
  65          drupal_set_message(t('You are not authorized to post comments.'), 'error');
  66          drupal_goto("node/$node->nid");
  67        }
  68      }
  69      else {
  70        // $pid indicates that this is a reply to a comment.
  71        if ($pid) {
  72          // load the comment whose cid = $pid
  73          if ($comment = db_fetch_object(db_query('SELECT c.*, u.uid, u.name AS registered_name, u.signature, u.signature_format, u.picture, u.data FROM {comments} c INNER JOIN {users} u ON c.uid = u.uid WHERE c.cid = %d AND c.status = %d', $pid, COMMENT_PUBLISHED))) {
  74            // If that comment exists, make sure that the current comment and the parent comment both
  75            // belong to the same parent node.
  76            if ($comment->nid != $node->nid) {
  77              // Attempting to reply to a comment not belonging to the current nid.
  78              drupal_set_message(t('The comment you are replying to does not exist.'), 'error');
  79              drupal_goto("node/$node->nid");
  80            }
  81            // Display the parent comment
  82            $comment = drupal_unpack($comment);
  83            $comment->name = $comment->uid ? $comment->registered_name : $comment->name;
  84            $output .= theme('comment_view', $comment, $node);
  85          }
  86          else {
  87            drupal_set_message(t('The comment you are replying to does not exist.'), 'error');
  88            drupal_goto("node/$node->nid");
  89          }
  90        }
  91        // This is the case where the comment is in response to a node. Display the node.
  92        else if (user_access('access content')) {
  93          $output .= node_view($node);
  94        }
  95  
  96        // Should we show the reply box?
  97        if (node_comment_mode($node->nid) != COMMENT_NODE_READ_WRITE) {
  98          drupal_set_message(t("This discussion is closed: you can't post new comments."), 'error');
  99          drupal_goto("node/$node->nid");
 100        }
 101        else if (user_access('post comments')) {
 102          $output .= comment_form_box(array('pid' => $pid, 'nid' => $node->nid), t('Reply'));
 103        }
 104        else {
 105          drupal_set_message(t('You are not authorized to post comments.'), 'error');
 106          drupal_goto("node/$node->nid");
 107        }
 108      }
 109    }
 110    else {
 111      drupal_set_message(t('You are not authorized to view comments.'), 'error');
 112      drupal_goto("node/$node->nid");
 113    }
 114  
 115    return $output;
 116  }