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<?php
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/**
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* @file
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* Enables your site members to vote on decisions using a simple ranking voting system
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*/
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/**
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* Implementation of hook_help().
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*/
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function rankvote_help($section) {
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switch($section) {
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case 'admin/help#rankvote':
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return t("<p>some text to help admins</p>");
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case 'admin/modules#description':
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return t("Enables your site members to vote on decisions using a simple ranking vote system");
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case 'node/add#rankvote':
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return t("A Ranking Vote is a form where visitors can rank each option");
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}
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}
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/**
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* Implementation of hook_access().
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*/
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function rankvote_access($op, $node) {
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if ($op == 'create') {
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return user_access('create ranking votes');
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}
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}
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/**
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* Implementation of hook_block().
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*
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* Generates a block containing the latest rankvote.
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*/
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function rankvote_block($op = 'list', $delta = 0) {
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if (user_access('access content')) {
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if ($op == 'list') {
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$blocks[0]['info'] = t('Most recent Ranking Vote');
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return $blocks;
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}
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elseif ($op == 'view') {
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// Retrieve the latest rankvote.
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$sql = db_rewrite_sql("SELECT MAX(n.created) FROM {node} n WHERE n.type = 'rankvote' AND n.status = 1 AND n.moderate = 0");
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$timestamp = db_result(db_query($sql));
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if ($timestamp) {
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$rankvote = node_load(array('type' => 'rankvote', 'created' => $timestamp, 'moderate' => 0, 'status' => 1));
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if ($rankvote->nid) {
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// rankvote_view() dumps the output into $rankvote->body.
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rankvote_view($rankvote, 1, 0, 1);
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}
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}
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$block['subject'] = t('Ranking Vote');
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$block['content'] = $rankvote->body;
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return $block;
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}
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else {
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return;
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}
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}
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}
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/**
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* Implementation of hook_cron().
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*
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* Closes rankvotes that ave exceeded their allowed runtime.
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*/
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function rankvote_cron() {
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$result = db_query("SELECT p.nid FROM {rankvote} p INNER JOIN {node} n ON p.nid=n.nid WHERE (n.created + p.runtime) < '". time() ."' AND p.active = '1' AND p.runtime != '0'");
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while ($rankvote = db_fetch_object($result)) {
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db_query("UPDATE {rankvote} SET active='0' WHERE nid = %d", $rankvote->nid);
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}
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}
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/**
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* Implementation of hook_delete().
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*/
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function rankvote_delete($node) {
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db_query("DELETE FROM {rankvote} WHERE nid=%d", $node->nid);
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db_query("DELETE FROM {rankvote_choices} WHERE nid = %d", $node->nid);
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}
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/**
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* Implementation of hook_validate().
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*/
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function rankvote_validate(&$node) {
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if (isset($node->title)) {
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// Check for at least two options and validate amount of votes:
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$realchoices = 0;
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foreach($node->choice as $i => $choice) {
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if ($choice['chtext'] != '') {
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$realchoices++;
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}
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if ($choice['chvotes'] < 0) {
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form_set_error("choice][$i][chvotes", t('Negative values are not allowed.'));
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}
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}
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if ($realchoices < 2) {
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form_set_error("choice][$realchoices][chtext", t('You must fill in at least two choices.'));
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}
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}
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$node->teaser = rankvote_teaser($node);
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}
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/**
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* Implementation of hook_form().
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*/
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function rankvote_form(&$node) {
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$admin = user_access('administer nodes');
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if (function_exists('taxonomy_node_form')) {
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$output = implode('', taxonomy_node_form('rankvote', $node));
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}
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if (!isset($node->choices)) {
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$node->choices = max(2, count($node->choice) ? count($node->choice) : 5);
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}
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// User ticked 'need more choices'.
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if ($node->morechoices) {
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$node->choices *= 2;
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}
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$output .= '<div class="rankvote-form">';
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// RankVote choices
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//$opts = drupal_map_assoc(range(2, $node->choices * 2 + 5));
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for ($a = 0; $a < $node->choices; $a++) {
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$group1 .= form_textfield(t('Choice %n', array('%n' => ($a + 1))), "choice][$a][chtext", $node->choice[$a]['chtext'], 50, 127);
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if ($admin) {
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$group1 .= form_textfield(t('Votes for choice %n', array('%n' => ($a + 1))), "choice][$a][chvotes", (int)$node->choice[$a]['chvotes'], 7, 7);
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}
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}
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$group1 .= form_hidden('choices', $node->choices);
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$group1 .= form_checkbox(t('Need more choices'), 'morechoices', 1, 0, t("If the amount of boxes above isn't enough, check this box and click the Preview button below to add some more."));
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$output .= form_group(t('Choices'), $group1);
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// RankVote attributes
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$_duration = array(0 => t('Unlimited')) + drupal_map_assoc(array(86400, 172800, 345600, 604800, 1209600, 2419200, 4838400, 9767800, 31536000), "format_interval");
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$_active = array(0 => t('Closed'), 1=> t('Active'));
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if ($admin) {
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$group2 .= form_radios(t('Ranking Vote status'), 'active', isset($node->active) ? $node->active : 1, $_active, t('When a Ranking Vote is closed, visitors can no longer vote for it.'));
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}
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$group2 .= form_select(t('Ranking Vote duration'), 'runtime', $node->runtime ? $node->runtime : 0, $_duration, t('After this period, the Ranking Vote will be closed automatically.'));
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$output .= form_group(t('Settings'), $group2);
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$output .= '</div>';
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return $output;
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}
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/**
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* Implementation of hook_insert().
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*/
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function rankvote_insert($node) {
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if (!user_access('administer nodes')) {
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// Make sure all votes are 0 initially
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foreach ($node->choice as $i => $choice) {
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$node->choice[$i]['chvotes'] = 0;
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}
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$node->active = 1;
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}
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db_query("INSERT INTO {rankvote} (nid, runtime, voters, active) VALUES (%d, %d, '', %d)", $node->nid, $node->runtime, $node->active);
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$i=0;
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foreach ($node->choice as $choice) {
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if ($choice['chtext'] != '') {
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db_query("INSERT INTO {rankvote_choices} (nid, chtext, chvotes, chorder) VALUES (%d, '%s', %d, %d)", $node->nid, $choice['chtext'], $choice['chvotes'], $i++);
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}
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}
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}
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/**
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* Implementation of hook_link().
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*/
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function rankvote_link($type, $node = 0, $main) {
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$links = array();
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if ($type == 'page' && user_access('access content')) {
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$links[] = l(t('votes'), 'rankvote', array('title' => t('View the list of Ranking Votes on this site.')));
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}
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return $links;
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}
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/**
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* Implementation of hook_menu().
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*/
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function rankvote_menu($may_cache) {
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$items = array();
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if($may_cache) {
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$items[] = array('path' => 'node/add/rankvote', 'title' => t('ranking vote'),
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'access' => user_access('create ranking votes'));
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$items[] = array('path' => 'rankvote', 'title' => t('ranking votes'),
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'callback' => 'rankvote_page',
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'access' => user_access('access content'),
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'type' => MENU_SUGGESTED_ITEM);
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$items[] = array('path' => 'rankvote/vote',
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'title' => t('vote'),
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'callback' => 'rankvote_vote',
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'access' => user_access('vote on ranking votes'),
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'type' => MENU_CALLBACK);
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}
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else {
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if (arg(0) == 'node' && is_numeric(arg(1))) {
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$node = node_load(array('nid' => arg(1)));
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if ($node->type == 'rankvote' && $node->allowvotes) {
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$items[] = array('path' => 'node/'. arg(1) .'/results',
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'title' => t('results'),
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'callback' => 'rankvote_results',
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'access' => user_access('access content'),
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'weight' => 3,
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'type' => MENU_LOCAL_TASK);
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}
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}
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}
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return $items;
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}
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/**
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* Determine an adjusted user id, to allow for basic tracking of anonymous
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* users (IP-based).
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*/
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function rankvote_uid() {
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global $user;
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if ($user->uid) {
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// Pad the UID with underscores to allow a simple strstr() search
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$id = '_'. $user->uid .'_';
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}
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else {
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$id = $_SERVER['REMOTE_ADDR'];
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}
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return $id;
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}
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/**
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* Implementation of hook_load().
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*/
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function rankvote_load($node) {
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// Load the appropriate choices into the $node object
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$rankvote = db_fetch_object(db_query("SELECT runtime, voters, active FROM {rankvote} WHERE nid = %d", $node->nid));
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$result = db_query("SELECT chtext, chvotes, chorder FROM {rankvote_choices} WHERE nid=%d ORDER BY RAND()", $node->nid);
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while ($choice = db_fetch_array($result)) {
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$rankvote->choice[$choice['chorder']] = $choice;
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}
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// Determine whether or not this user is allowed to vote
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$rankvote->allowvotes = false;
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if (user_access('vote on ranking votes')) {
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if(!strstr($rankvote->voters, rankvote_uid())) {
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$rankvote->allowvotes = $rankvote->active;
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}
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}
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return $rankvote;
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}
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/**
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* Implementation of hook_node_name().
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*/
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function rankvote_node_name($node) {
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return t("Ranking Vote");
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}
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function rankvote_page() {
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// List all Ranking Votes
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$sql = db_rewrite_sql("SELECT n.nid, n.title, p.active, n.created, SUM(c.chvotes) AS votes FROM {node} n INNER JOIN {rankvote} p ON n.nid=p.nid INNER JOIN {rankvote_choices} c ON n.nid=c.nid WHERE type = 'rankvote' AND status = 1 AND moderate = 0 GROUP BY n.nid, n.title, p.active, n.created ORDER BY n.created DESC");
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$result = pager_query($sql, 15);
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$output = '<ul>';
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while ($node = db_fetch_object($result)) {
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$output .= '<li>'. l($node->title, "node/$node->nid") .' - '. format_plural($node->votes, '1 vote', '%count votes') .' - '. ($node->active ? t('open') : t('closed')) . '</li>';
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}
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$output .= '</ul>';
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$output .= theme("pager", NULL, 15);
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print theme('page', $output);
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}
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/**
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* Implementation of hook_perm().
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*/
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function rankvote_perm() {
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return array('create ranking votes', 'vote on ranking votes');
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}
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/**
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* Creates a simple teaser that lists all the choices.
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*/
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function rankvote_teaser($node) {
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if (is_array($node->choice)) {
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foreach ($node->choice as $k => $choice) {
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$teaser .= '* '. $choice['chtext'] .'\n';
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}
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}
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return $teaser;
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}
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/**
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* Generates the voting form for a ranking vote.
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*/
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function rankvote_view_voting(&$node, $main, $page, $block) {
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$output = '<div class="rankvote">';
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if ($block) {
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$output .= '<div class="title rankvote_title">'. check_plain($node->title) .'</div>';
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}
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$form = '<div class="vote-form">';
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$form .= '<div class="choices">';
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if ($node->choice) {
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$options = drupal_map_assoc(range(1, count($node->choice)));
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foreach ($node->choice as $i => $choice) {
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$form .= form_select(check_plain($choice['chtext']), "choice][". $choice['chorder'], -1, $options, '', 0, false, true);
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}
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}
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$form .= '</div>';
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$form .= form_hidden('nid', $node->nid);
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$form .= form_submit(t('Vote'), 'vote') .'</div>';
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$output .= form($form, 'post', url('rankvote/vote/'. $node->nid));
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$output .= '</div>';
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return $output;
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}
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/**
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* Generates a graphical representation of the results of a ranking vote.
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*/
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function rankvote_view_results(&$node, $main, $page, $block) {
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// Display the results
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| 340 |
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// Count the votes and find the maximum
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$temp = array();
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foreach($node->choice as $i => $choice) {
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$temp[$i] = $choice['chvotes'];
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}
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asort($temp);
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| 347 |
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| 348 |
// Output the divs for the text, bars and percentages
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| 349 |
$output .= '<div class="rankvote">';
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if ($block) {
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$output .= '<div class="title rankvote_title">'. check_plain($node->title) .'</div>';
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}
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$output .= '<ul>';
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foreach($temp as $i => $score) {
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$output .='<li>'. check_plain($node->choice[$i]['chtext']) .' <small>score = '. $node->choice[$i]['chvotes'] . '</small></li>';
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}
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| 358 |
$output .= '</ul></div>';
|
| 359 |
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return $output;
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| 361 |
}
|
| 362 |
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| 363 |
/**
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| 364 |
* Callback for the 'results' tab for ranking votes you can vote on
|
| 365 |
*/
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function rankvote_results() {
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| 367 |
if ($node = node_load(array('nid' => arg(1)))) {
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| 368 |
drupal_set_title(check_plain($node->title));
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| 369 |
print theme('page', node_show($node, 0));
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}
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else {
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drupal_not_found();
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}
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}
|
| 375 |
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| 376 |
|
| 377 |
|
| 378 |
function _valid_rankvote($choice) {
|
| 379 |
$temp = array();
|
| 380 |
foreach($choice as $rank) {
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| 381 |
$temp[] = $rank;
|
| 382 |
}
|
| 383 |
|
| 384 |
sort($temp);
|
| 385 |
|
| 386 |
for ($i=0; $i < count($temp); ++$i) {
|
| 387 |
if ($i != $temp[$i]-1) {
|
| 388 |
return false;
|
| 389 |
}
|
| 390 |
}
|
| 391 |
return true;
|
| 392 |
}
|
| 393 |
|
| 394 |
/**
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| 395 |
* Callback for processing a vote
|
| 396 |
*/
|
| 397 |
function rankvote_vote(&$node) {
|
| 398 |
$nid = arg(2);
|
| 399 |
if ($node = node_load(array('nid' => $nid))) {
|
| 400 |
$edit = $_POST['edit'];
|
| 401 |
$choice = $edit['choice'];
|
| 402 |
$vote = $_POST['vote'];
|
| 403 |
|
| 404 |
if (isset($choice) && count($choice) == count($node->choice)) { //need to check valid vote data here
|
| 405 |
if (_valid_rankvote($choice)) {
|
| 406 |
if ($node->allowvotes) {
|
| 407 |
$id = rankvote_uid();
|
| 408 |
$node->voters = $node->voters ? ($node->voters .' '. $id) : $id;
|
| 409 |
db_query("UPDATE {rankvote} SET voters='%s' WHERE nid = %d", $node->voters, $node->nid);
|
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foreach($choice as $i => $rank) {
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db_query("UPDATE {rankvote_choices} SET chvotes = chvotes + %d WHERE nid = %d AND chorder = %d", $rank, $node->nid, $i);
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$node->choice[$i]['chvotes'] += $rank;
|
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}
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$node->allowvotes = false;
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| 415 |
drupal_set_message(t('Your vote was recorded.'));
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}
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else {
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| 418 |
drupal_set_message(t("You're not allowed to vote on this ranking vote."), 'error');
|
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}
|
| 420 |
}
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else {
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| 422 |
drupal_set_message(t("Each choice should get a unique rank for the vote to be valid."), 'error');
|
| 423 |
}
|
| 424 |
}
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| 425 |
else {
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| 426 |
drupal_set_message(t("All choices must be ranked for the vote to be valid."), 'error');
|
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}
|
| 428 |
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| 429 |
drupal_goto('node/'. $nid);
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}
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else {
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| 432 |
drupal_not_found();
|
| 433 |
}
|
| 434 |
}
|
| 435 |
|
| 436 |
/**
|
| 437 |
* Implementation of hook_view().
|
| 438 |
*
|
| 439 |
* @param $block
|
| 440 |
* An extra parameter that adapts the hook to display a block-ready
|
| 441 |
* rendering of the ranking vote.
|
| 442 |
*/
|
| 443 |
function rankvote_view(&$node, $teaser = FALSE, $page = FALSE, $block = FALSE) {
|
| 444 |
global $user;
|
| 445 |
$output = '';
|
| 446 |
|
| 447 |
if ($node->allowvotes && ($block || arg(2) != 'results')) {
|
| 448 |
$output .= rankvote_view_voting($node, $main, $page, $block);
|
| 449 |
}
|
| 450 |
else {
|
| 451 |
$output .= rankvote_view_results($node, $main, $page, $block);
|
| 452 |
}
|
| 453 |
|
| 454 |
// Special display for side-block
|
| 455 |
if ($block) {
|
| 456 |
// No 'read more' link
|
| 457 |
$node->body = $node->teaser = '';
|
| 458 |
|
| 459 |
$links = module_invoke_all('link', 'node', $node, $main);
|
| 460 |
$links[] = l(t('older ranking votes'), 'rankvote', array('title' => t('View the list of ranking votes on the site.')));
|
| 461 |
if ($node->allowvotes && $block) {
|
| 462 |
$link[] = l(t('results'), 'node/'. $node->nid .'/results', array('title' => t('View the current ranking vote results.')));
|
| 463 |
}
|
| 464 |
|
| 465 |
$output .= '<div class="links">'. theme("links", $links) .'</div>';
|
| 466 |
}
|
| 467 |
|
| 468 |
$node->body = $node->teaser = $output;
|
| 469 |
}
|
| 470 |
|
| 471 |
/**
|
| 472 |
* Implementation of hook_update().
|
| 473 |
*/
|
| 474 |
function rankvote_update($node) {
|
| 475 |
db_query('UPDATE {rankvote} SET runtime = %d, active = %d WHERE nid = %d', $node->runtime, $node->active, $node->nid);
|
| 476 |
|
| 477 |
db_query('DELETE FROM {rankvote_choices} WHERE nid = %d', $node->nid);
|
| 478 |
$i=1;
|
| 479 |
foreach ($node->choice as $choice) {
|
| 480 |
$chvotes = (int)$choice['chvotes'];
|
| 481 |
$chtext = $choice['chtext'];
|
| 482 |
|
| 483 |
if ($chtext != '') {
|
| 484 |
db_query("INSERT INTO {rankvote_choices} (nid, chtext, chvotes, chorder) VALUES (%d, '%s', %d, %d)", $node->nid, $chtext, $chvotes, $i++);
|
| 485 |
}
|
| 486 |
}
|
| 487 |
}
|
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