Contributions API

content_permissions.module

<?php
// $Id: content_permissions.module,v 1.5.2.2 2008/10/06 15:11:39 karens Exp $
/**
 *  Implementation of hook_perm().
 */
function content_permissions_perm() {
  $perms = array();
  foreach (content_fields() as $field) {
    $perms[] = 'edit '. $field['field_name'];
    $perms[] = 'view '. $field['field_name'];
  }
  return $perms;
}

/**
 *  Implementation of hook_nodeapi(). Remove inaccessible fields from node display.
 */
function content_permissions_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
  if ($op == 'view') {
    $type = content_types($node->type);
    foreach ($type['fields'] as $field_name => $field) {
      if (isset($node->content[$field_name])) {
        $node->content[$field_name]['#access'] = user_access('view '. $field_name);
      }
    }
  }
}

/**
 *  Remove inaccessible fields from nodes.
 *
 * @see content_field_form().
 */
function content_permissions_field_access($op, $field) {
  switch ($op) {
    case 'view':
    case 'edit':
      return user_access($op .' '. $field['field_name']);
  }
  return TRUE;
}

/**
 *  The default field access callback. Remove inaccessible fields from Views.
 *
 * @see content_views_field_views_data().
 */
function content_views_access_callback($field) {
  return user_access('view '. $field['field_name']);
}