/**
* Enforces a one person, one vote policy based on a unique identifier
*/
function connect_action_voteonce(&$parent, &$child, $op = '', $target = 'child')
{
$message = connect_node_options($parent->nid, 'voteonce_message');
$message = $message ? $message : t('You have already participated.');
switch ($op) {
case 'requires':
$return = array();
$return['child'] = array('voteonce_identifier' => 'Unique identifier (i.e., full name, membership #, or email address)');
$return['variables'] = array('voteonce_message' => array('#type' => 'textfield', '#title' => 'Message to display when someone attempts to participate more than once', '#default_value' => $message, '#required' => TRUE));
return $return;
break;
case 'validate':
// don't check for this when editing an existing child node
if (isset($child->status) && $child->status == 0) {
return;
}
$map = connect_get_map($parent->nid);
$test_value = connect_value('voteonce_identifier', $parent, $child, 'child');
$fieldname = $map['voteonce_identifier'];
$field_keys = connect_get_field_keys($fieldname);
$test_db = _connect_get_cck_db_info($fieldname);
$test_table = $test_db['table'];
$test_column = $test_db['columns'][$field_keys[0]]['column'];
$sql = "SELECT count(*) FROM {" . $test_table . "} t, {connect_data} p WHERE t.nid=p.nid AND t.{$test_column} = '%s' AND p.pid = %d";
$count = db_result(db_query($sql, array($test_value, $parent->nid)));
$already_voted = $count != 0;
if ($already_voted) {
form_set_error('', t($message));
}
break;
case 'status':
// if this user has already participated
if (isset($_SESSION['connect_action_basic_' . $parent->nid])) {
return array('status' => $message, 'show_form' => FALSE);
}
break;
}
}
/**
* allows participant-generated content to replace the parent content
*/
function connect_action_content_replace(&$parent, &$child, $op = '', $target = 'child')
{
switch ($op) {
case 'requires':
$return = array();
$return['parent'] = array('data_replace_parent' => 'Content replace: the content that can be rewritten.');
$return['child'] = array('data_replace_child' => 'Content replace: the participant\'s version.');
return $return;
case 'form_alter':
$map = connect_get_map($parent->nid);
$field = $map['data_replace_child'];
$key = connect_get_field_keys($field);
// filter text if required
$cck_info = _content_type_info();
$cck_vars = $cck_info['content types'][connect_node_options($parent->nid, 'participant_type')]['fields'];
$text = connect_value('data_replace_parent', $parent, $child, 'parent');
if ($cck_vars[$field]['text_processing'] == 0) {
$text = strip_tags($text);
}
$child[$field][0]['#default_value']['value'] = $text;
break;
case 'insert':
if ($target == 'child') {
$addition = connect_value('data_replace_child', $parent, $child, 'child');
connect_value('data_replace_parent', $parent, $child, 'parent', $addition);
}
break;
}
}
