function book_access in Drupal 5

Same name and namespace in other branches

1. 4 modules/book.module \book_access()

Implementation of hook_access().

1 call to book_access()

book_link in modules/book/book.module

Implementation of hook_link().

File

modules/book/book.module, line 31

Allows users to collaboratively author a book.

Code

function book_access($op, $node) {
  global $user;
  if ($op == 'create') {

    // Only registered users can create book pages. Given the nature
    // of the book module this is considered to be a good/safe idea.
    return user_access('create book pages');
  }
  if ($op == 'update') {

    // Only registered users can update book pages. Given the nature
    // of the book module this is considered to be a good/safe idea.
    // One can only update a book page if there are no suggested updates
    // of that page waiting for approval. That is, only updates that
    // don't overwrite the current or pending information are allowed.
    if (user_access('edit book pages') || $node->uid == $user->uid && user_access('edit own book pages')) {
      return TRUE;
    }
    else {

      // do nothing. node-access() will determine further access
    }
  }
}