function advpoll_ranking_process_votes in Advanced Poll 7.3

Same name and namespace in other branches

1. 7 advpoll_ranking/advpoll_ranking.module \advpoll_ranking_process_votes()
2. 7.2 advpoll_ranking/advpoll_ranking.module \advpoll_ranking_process_votes()

Handles voting algorithm used by different types of ranking polls and passes off results to voting API.

Parameters

$nid: Node id of the poll.

$data: Data from the node formatted by one of the helper functions in the advpoll_helper.inc document.

votes: An array of voting information needed by Voting API.

2 calls to advpoll_ranking_process_votes()

advpoll_draggable_submit in advpoll_ranking/advpoll_ranking.module

Submit handler for ranking polls.

advpoll_ranking_submit in advpoll_ranking/advpoll_ranking.module

Submit handler for ranking polls.

File

advpoll_ranking/advpoll_ranking.module, line 488

Code

function advpoll_ranking_process_votes($data, $nid, $votes) {
  if ($data->behavior == 'borda' || $data->behavior == 'borda_all' || $data->behavior == 'runoff_all') {

    /* Borda is based upon the number of possible choices.
     * algorithm is (number of choices - ranking) where first
     * place is 0.
     * @see http://en.wikipedia.org/wiki/Borda_count#Voting_and_counting
     */
    $points = count($data->choices);
  }
  else {

    /* Runoff voting ranks each user's choices and eliminates low score.
     * @see http://en.wikipedia.org/wiki/Instant-runoff_voting#Election_procedure
     */
    $points = $data->max_choices;
  }
  foreach ($votes as $ranking) {
    $vote = array();
    $vote['type'] = 'node';
    $vote['tag'] = $ranking['id'];
    $vote['nid'] = $nid;
    $vote['value'] = $points - ($ranking['rank'] - 1);
    $vote['mode'] = $data->mode;
    $vote['duration'] = $data->cookie_duration;
    advpoll_add_votes($vote);
  }
}