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root / drupal7 / modules / comment / comment.pages.inc @ 6a4d64c4

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<?php
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/**
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 * @file
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 * User page callbacks for the comment module.
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 */
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/**
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 * This function is responsible for generating a comment reply form.
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 * There are several cases that have to be handled, including:
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 *   - replies to comments
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 *   - replies to nodes
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 *   - attempts to reply to nodes that can no longer accept comments
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 *   - respecting access permissions ('access comments', 'post comments', etc.)
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 *
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 * The node or comment that is being replied to must appear above the comment
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 * form to provide the user context while authoring the comment.
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 *
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 * @param $node
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 *   Every comment belongs to a node. This is that node.
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 *
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 * @param $pid
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 *   Some comments are replies to other comments. In those cases, $pid is the parent
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 *   comment's cid.
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 *
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 * @return array
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 *   An associative array containing:
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 *   - An array for rendering the node or parent comment.
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 *     - comment_node: If the comment is a reply to the node.
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 *     - comment_parent: If the comment is a reply to another comment.
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 *   - comment_form: The comment form as a renderable array.
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 */
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function comment_reply($node, $pid = NULL) {
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  // Set the breadcrumb trail.
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  drupal_set_breadcrumb(array(l(t('Home'), NULL), l($node->title, 'node/' . $node->nid)));
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  $op = isset($_POST['op']) ? $_POST['op'] : '';
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  $build = array();
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  // The user is previewing a comment prior to submitting it.
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  if ($op == t('Preview')) {
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    if (user_access('post comments')) {
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      $build['comment_form'] = drupal_get_form("comment_node_{$node->type}_form", (object) array('pid' => $pid, 'nid' => $node->nid));
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    }
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    else {
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      drupal_set_message(t('You are not authorized to post comments.'), 'error');
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      drupal_goto("node/$node->nid");
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    }
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  }
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  else {
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    // $pid indicates that this is a reply to a comment.
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    if ($pid) {
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      if (user_access('access comments')) {
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        // Load the comment whose cid = $pid
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        $comment = db_query('SELECT c.*, u.uid, u.name AS registered_name, u.signature, u.signature_format, u.picture, u.data FROM {comment} c INNER JOIN {users} u ON c.uid = u.uid WHERE c.cid = :cid AND c.status = :status', array(
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          ':cid' => $pid,
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          ':status' => COMMENT_PUBLISHED,
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        ))->fetchObject();
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        if ($comment) {
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          // If that comment exists, make sure that the current comment and the
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          // parent comment both belong to the same parent node.
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          if ($comment->nid != $node->nid) {
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            // Attempting to reply to a comment not belonging to the current nid.
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            drupal_set_message(t('The comment you are replying to does not exist.'), 'error');
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            drupal_goto("node/$node->nid");
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          }
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          // Display the parent comment
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          $comment->node_type = 'comment_node_' . $node->type;
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          field_attach_load('comment', array($comment->cid => $comment));
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          $comment->name = $comment->uid ? $comment->registered_name : $comment->name;
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          $build['comment_parent'] = comment_view($comment, $node);
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        }
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        else {
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          drupal_set_message(t('The comment you are replying to does not exist.'), 'error');
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          drupal_goto("node/$node->nid");
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        }
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      }
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      else {
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        drupal_set_message(t('You are not authorized to view comments.'), 'error');
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        drupal_goto("node/$node->nid");
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      }
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    }
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    // This is the case where the comment is in response to a node. Display the node.
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    elseif (user_access('access content')) {
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      $build['comment_node'] = node_view($node);
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    }
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    // Should we show the reply box?
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    if ($node->comment != COMMENT_NODE_OPEN) {
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      drupal_set_message(t("This discussion is closed: you can't post new comments."), 'error');
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      drupal_goto("node/$node->nid");
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    }
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    elseif (user_access('post comments')) {
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      $edit = array('nid' => $node->nid, 'pid' => $pid);
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      $build['comment_form'] = drupal_get_form("comment_node_{$node->type}_form", (object) $edit);
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    }
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    else {
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      drupal_set_message(t('You are not authorized to post comments.'), 'error');
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      drupal_goto("node/$node->nid");
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    }
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  }
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  return $build;
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}
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/**
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 * Menu callback; publish specified comment.
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 *
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 * @param $cid
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 *   A comment identifier.
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 */
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function comment_approve($cid) {
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  if (!isset($_GET['token']) || !drupal_valid_token($_GET['token'], "comment/$cid/approve")) {
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    return MENU_ACCESS_DENIED;
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  }
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  if ($comment = comment_load($cid)) {
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    $comment->status = COMMENT_PUBLISHED;
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    comment_save($comment);
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    drupal_set_message(t('Comment approved.'));
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    drupal_goto('node/' . $comment->nid);
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  }
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  return MENU_NOT_FOUND;
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}