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<?php
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/* $Id: lovehate.module,v 1.23 2006/07/20 13:04:20 eaton Exp $ */
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/**
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* @file
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* Lets users vote on vocabulary terms to announce their loves and hates.
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*/
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// ************
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// System hooks
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// ************
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function lovehate_help($section) {
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switch ($section) {
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case 'admin/modules#description':
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return t('Lets users vote on vocabulary terms to announce their loves and hates.');
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break;
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}
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}
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/**
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* hook_perm impelementation.
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*/
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function lovehate_perm() {
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return array('view loves and hates', 'choose loves and hates');
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}
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/**
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* hook_menu impelementation.
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*/
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function lovehate_menu($may_cache) {
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global $user;
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$items = array();
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if ($may_cache) {
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$items[] = array(
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'path' => 'lovehate',
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'title' => t('loves and hates'),
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'callback' => 'lovehate_page',
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'access' => user_access('view loves and hates'),
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'type' => MENU_SUGGESTED_ITEM,
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);
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$items[] = array(
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'path' => 'lovehate/vote',
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'title' => t('lovehate vote'),
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'callback' => 'lovehate_vote',
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'access' => user_access('choose loves and hates'),
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'type' => MENU_CALLBACK,
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);
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$items[] = array(
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'path' => 'lovehate/ajaxvote',
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'title' => t('lovehate ajax vote'),
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'callback' => 'lovehate_ajax_vote',
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'access' => user_access('choose loves and hates'),
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'type' => MENU_CALLBACK,
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);
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}
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else {
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if (arg(0) == 'user' && is_numeric(arg(1))) {
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$items[] = array(
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'path' => 'user/'. arg(1) .'/lovehate',
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'title' => t('loves and hates'),
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'callback' => 'lovehate_user_page',
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'access' => user_access('view loves and hates'),
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'type' => MENU_IS_LOCAL_TASK
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);
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}
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}
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return $items;
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}
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// Intercept term deletion and remove old votes.
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function lovehate_taxonomy($op, $type, $object = NULL) {
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if ($op == 'delete' && $type == 'term') {
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$votes = _votingapi_get_raw_votes('term', $object['tid']);
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votingapi_delete_votes($votes);
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votingapi_recalculate_results('term', $object['tid']);
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}
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}
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function lovehate_term_path($term) {
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return 'lovehate/' . $term->tid;
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}
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/**
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* hook_settings impelementation.
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*/
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function lovehate_settings() {
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$form = array();
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// preload variables for the form
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$vid = variable_get('lovehate_vocabulary', 0);
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$vocabularies = array();
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$result = db_query("SELECT vid, name FROM {vocabulary} WHERE module = 'taxonomy' OR module = 'lovehate'");
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while ($vocabulary = db_fetch_object($result)) {
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$vocabularies[$vocabulary->vid] = $vocabulary->name;
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}
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db_query("UPDATE {vocabulary} SET module = 'taxonomy' WHERE module = 'lovehate'");
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if ($vid && variable_get('lovehate_vocabulary_control', 0)) {
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db_query("UPDATE {vocabulary} SET module = 'lovehate' WHERE vid = %d AND module = 'taxonomy'", $vid);
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}
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$form['lovehate_vocabulary'] = array(
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'#type' => 'select',
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'#title' => t('The vocabulary containing terms to love or hate'),
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'#default_value' => $vid,
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'#options' => $vocabularies,
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'#description' => t('Users will be able to vote on whether they love or hate each term from this vocabulary.'),
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);
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$form['lovehate_vocabulary_control'] = array(
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'#type' => 'checkbox',
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'#title' => t('Take control of the selected vocabulary'),
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'#description' => t('When selected, links to terms in the Love/Hate vocabulary will automatically be redirected to the Love/Hate page. Vocabularies already controlled by another module (like Forum or Image Gallery) cannot be changed.'),
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'#return_value' => 1,
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'#default_value' => variable_get('lovehate_vocabulary_control', 0),
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);
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$form['lovehate_item_count'] = array(
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'#type' => 'select',
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'#title' => t('User terms count'),
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'#description' => t('The number of items to display for a given user\'s loves and hates.'),
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'#default_value' => variable_get('lovehate_item_count', 50),
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'#options' => drupal_map_assoc(array(5, 10, 15, 20, 25, 50, 75, 100, 200)),
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);
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$form['lovehate_user_count'] = array(
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'#type' => 'select',
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'#title' => t('Term users count'),
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'#description' => t('The number of users to display for a given term\'s lovers/haters list.'),
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'#default_value' => variable_get('lovehate_user_count', 50),
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'#options' => drupal_map_assoc(array(5, 10, 15, 20, 25, 50, 75, 100, 200)),
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);
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return $form;
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}
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function lovehate_block($op = 'list', $delta = 0, $edit = array()) {
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switch ($op) {
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case 'configure': {
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$form = array();
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$form['lovehate_block_title'] = array(
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'#type' => 'textfield',
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'#default_value' => variable_get('lovehate_block_title', t('Popular topics')),
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'#size' => 30,
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'#maxlength' => 120,
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'#description' => t('Enter the title for the Love/Hate block'),
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'#title' => 'Block title',
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);
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$form['lovehate_block_count'] = array(
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'#type' => 'select',
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'#default_value' => variable_get('lovehate_block_count', 10),
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'#options' => array(5=>5, 10=>10, 15=>15, 20=>20),
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'#description' => t('Enter the number of loves and hates to list'),
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'#title' => 'Block count',
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);
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return $form;
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}
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case 'save': {
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variable_set('lovehate_block_title', $edit['lovehate_block_title']);
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variable_set('lovehate_block_count', $edit['lovehate_block_count']);
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break;
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}
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case 'list': {
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$block[0]['info'] = "Love/Hate: ".variable_get('amazon_read_blocktitle', t('Popular topics'));
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return $block;
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}
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case 'view': {
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$terms = lovehate_get_top_terms(variable_get('lovehate_block_count', 10));
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if (count($terms)) {
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$block['subject'] = variable_get('amazon_read_blocktitle', t('Popular topics'));
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$block['content'] = theme('lovehate_block_list', $terms);
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return $block;
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}
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break;
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}
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}
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}
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/**
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* Hunmonk's module dependency check: see http://drupal.org/node/54463
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*/
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function lovehate_form_alter($form_id, &$form) {
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if ($form_id == 'system_modules' && !$_POST) {
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lovehate_system_module_validate($form);
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}
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}
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/**
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* Hunmonk's module dependency check: see http://drupal.org/node/54463
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*/
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function lovehate_system_module_validate(&$form) {
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$module = 'lovehate';
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$dependencies = array('votingapi', 'taxonomy');
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foreach ($dependencies as $dependency) {
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if (!in_array($dependency, $form['status']['#default_value'])) {
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$missing_dependency = TRUE;
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$missing_dependency_list[] = $dependency;
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}
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}
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if (in_array($module, $form['status']['#default_value']) && isset($missing_dependency)) {
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db_query("UPDATE {system} SET status = 0 WHERE type = 'module' AND name = '%s'", $module);
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$key = array_search($module, $form['status']['#default_value']);
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unset($form['status']['#default_value'][$key]);
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drupal_set_message(t('The module %module was deactivated--it requires the following disabled/non-existant modules to function properly: %dependencies', array('%module' => $module, '%dependencies' => implode(', ', $missing_dependency_list))), 'error');
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}
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}
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// ************************************************
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// Voting functions -- vote casting and calculation
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// ************************************************
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function lovehate_votingapi_calculate(&$cache, $votes, $content_type, $content_id) {
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// Maintain an additional 'lovers' and 'haters' count for each term
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if ($content_type == 'term' && count($votes)) {
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$lovers = 0;
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$haters = 0;
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foreach($votes as $vote) {
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if ($vote->value_type == 'points') {
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if ($vote->value == 1) {
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$lovers += 1;
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}
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else {
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$haters += 1;
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}
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}
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}
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$cache['vote']['points']['haters'] = $haters;
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$cache['vote']['points']['lovers'] = $lovers;
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unset($cache['vote']['points']['count']);
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unset($cache['vote']['points']['average']);
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}
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}
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function _lovehate_cast_vote($tid, $score) {
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global $user;
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// bail out if the user doens't have access, if the args aren't numeric
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if (!user_access('choose loves and hates')) {
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return;
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} if (!is_numeric($tid) || !is_numeric($score)) {
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return;
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}
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if ($score > 1 || $score < -1) {
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return;
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}
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if ($score == 0) {
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votingapi_unset_vote('term', $tid);
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}
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else if ($score == -1 || $score == 1) {
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// add the vote
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$vote->value = $score;
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$vote->value_type = 'points';
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$vote->tag = 'vote';
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votingapi_set_vote('term', $tid, $vote);
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}
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else {
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// We only allow those three values. bail if it's anything else.
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return;
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}
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}
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function lovehate_vote($tid = NULL, $score = NULL) {
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if ($tid === NULL) {
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$tid = arg(2);
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}
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if ($score == NULL) {
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$score = arg(3);
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}
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_lovehate_cast_vote($tid, $score);
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drupal_goto();
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}
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function lovehate_ajax_vote($tid = NULL, $score = NULL) {
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if ($tid === NULL) {
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$tid = arg(2);
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}
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if ($score == NULL) {
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$score = arg(3);
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}
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_lovehate_cast_vote($tid, $score);
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$newscore = lovehate_get_term_score($tid);
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print $newscore->lovers . ',' . $newscore->haters . ',' . $newscore->score;
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exit();
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}
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// ********************************************
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// Utility functions for handling lovehate data
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// ********************************************
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function lovehate_get_node_terms($nid, $precache = FALSE) {
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$vid = variable_get('lovehate_vocabulary', 0);
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if ($vid == 0) {
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return array();
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}
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else {
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$terms = taxonomy_node_get_terms_by_vocabulary($nid, $vid);
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if ($precache) {
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foreach ($terms as $tid => $term) {
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$terms[$tid]->lovehate = lovehate_get_term_score($tid);
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}
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}
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return $terms;
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}
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}
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function lovehate_calculate_score_from_terms($terms) {
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$score->user = 0;
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$score->overall = 0;
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foreach ($terms as $term) {
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$score->user += $term->lovehate->current_user;
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$score->overall += $term->lovehate->score;
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}
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return $score;
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}
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function lovehate_get_all_terms($uid = NULL, $precache = FALSE) {
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$terms = array();
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$vid = variable_get('lovehate_vocabulary', 0);
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if ($vid != 0) {
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$result = db_query('SELECT * FROM {term_data} WHERE vid = %d', $vid);
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while ($term = db_fetch_object($result)) {
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$term->lovehate = lovehate_get_term_score($term->tid, $uid);
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$terms[$term->tid] = $term;
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}
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if ($precache) {
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foreach ($terms as $tid => $term) {
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| 336 |
$terms[$tid]->lovehate = lovehate_get_term_score($tid, $uid);
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}
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}
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| 339 |
}
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return $terms;
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}
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| 343 |
function lovehate_get_term_score($tid, $uid = NULL) {
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| 344 |
$score->lovers = 0;
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| 345 |
$score->haters = 0;
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| 346 |
$score->score = 0;
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| 347 |
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| 348 |
$votes = votingapi_get_voting_results('term', $tid);
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| 349 |
foreach ($votes as $vote) {
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| 350 |
if ($vote->function == 'lovers') {
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| 351 |
$score->lovers = $vote->value;
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}
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| 353 |
if ($vote->function == 'haters') {
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| 354 |
$score->haters = $vote->value;
|
| 355 |
}
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| 356 |
if ($vote->function == 'sum') {
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| 357 |
$score->score = $vote->value;
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| 358 |
}
|
| 359 |
}
|
| 360 |
|
| 361 |
if ($uid != NULL) {
|
| 362 |
$current_user_vote = votingapi_get_user_votes('term', $tid, $uid);
|
| 363 |
if (isset($current_user_vote[0])) {
|
| 364 |
$score->current_user = $current_user_vote[0]->value;
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| 365 |
}
|
| 366 |
}
|
| 367 |
return $score;
|
| 368 |
}
|
| 369 |
|
| 370 |
function lovehate_get_term_users($tid) {
|
| 371 |
$users->lovers = array();
|
| 372 |
$users->haters = array();
|
| 373 |
$votes = votingapi_get_content_votes('term', $tid);
|
| 374 |
|
| 375 |
foreach ($votes as $uid=>$uid_votes) {
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| 376 |
foreach ($uid_votes as $vote) {
|
| 377 |
if ($vote->value == 1) {
|
| 378 |
$users->lovers[] = $uid;
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| 379 |
}
|
| 380 |
else if ($vote->value == -1) {
|
| 381 |
$users->haters[] = $uid;
|
| 382 |
}
|
| 383 |
}
|
| 384 |
}
|
| 385 |
return $users;
|
| 386 |
}
|
| 387 |
|
| 388 |
function lovehate_get_user_terms($uid = NULL) {
|
| 389 |
if ($uid == NULL) {
|
| 390 |
global $user;
|
| 391 |
$uid = $user->uid;
|
| 392 |
}
|
| 393 |
|
| 394 |
$terms->loves = array();
|
| 395 |
$terms->hates = array();
|
| 396 |
$terms->other = array();
|
| 397 |
|
| 398 |
$tmp = lovehate_get_all_terms($uid, TRUE);
|
| 399 |
|
| 400 |
foreach ($tmp as $term) {
|
| 401 |
if ($term->lovehate->current_user == 1) {
|
| 402 |
$terms->loves[$term->tid] = $term;
|
| 403 |
}
|
| 404 |
else if ($term->lovehate->current_user == -1) {
|
| 405 |
$terms->hates[$term->tid] = $term;
|
| 406 |
}
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| 407 |
else {
|
| 408 |
$terms->other[$term->tid] = $term;
|
| 409 |
}
|
| 410 |
}
|
| 411 |
|
| 412 |
return $terms;
|
| 413 |
}
|
| 414 |
|
| 415 |
function lovehate_get_top_terms($count = 10) {
|
| 416 |
$ordered_terms = array();
|
| 417 |
$terms = lovehate_get_all_terms(NULL, TRUE);
|
| 418 |
foreach ($terms as $term) {
|
| 419 |
$ordered_terms[$term->lovehate->score] = $term;
|
| 420 |
}
|
| 421 |
krsort($ordered_terms, SORT_NUMERIC);
|
| 422 |
if ($count > count($ordered_terms)) {
|
| 423 |
$ordered_terms = array_slice($ordered_terms, 0, $count);
|
| 424 |
}
|
| 425 |
return $ordered_terms;
|
| 426 |
}
|
| 427 |
|
| 428 |
|
| 429 |
// *************************
|
| 430 |
// Page generation functions
|
| 431 |
// *************************
|
| 432 |
|
| 433 |
function lovehate_page($tid = 0) {
|
| 434 |
// we're in page-mode, not individual term mode.
|
| 435 |
if ($tid == 0) {
|
| 436 |
$terms = lovehate_get_all_terms();
|
| 437 |
return theme('lovehate_overview_page', $terms);
|
| 438 |
}
|
| 439 |
else {
|
| 440 |
$term = taxonomy_get_term($tid);
|
| 441 |
$term->lovehate = lovehate_get_term_score($tid);
|
| 442 |
$score = lovehate_get_term_score($tid);
|
| 443 |
$users = lovehate_get_term_users($tid);
|
| 444 |
|
| 445 |
return theme('lovehate_detail_page', $term, $score, $users->lovers, $users->haters);
|
| 446 |
}
|
| 447 |
|
| 448 |
return $output;
|
| 449 |
}
|
| 450 |
|
| 451 |
function lovehate_user_page() {
|
| 452 |
$uid = arg(1);
|
| 453 |
$user_data = lovehate_get_user_terms($uid);
|
| 454 |
|
| 455 |
$output = theme('lovehate_user_page', $uid, $user_data->loves, $user_data->hates, $user_data->other);
|
| 456 |
|
| 457 |
return $output;
|
| 458 |
}
|
| 459 |
|
| 460 |
// *****************
|
| 461 |
// Theming functions
|
| 462 |
// *****************
|
| 463 |
|
| 464 |
function theme_lovehate_overview_page($terms = array()) {
|
| 465 |
$output = "";
|
| 466 |
foreach ($terms as $term) {
|
| 467 |
$output .= theme('lovehate_term', $term, TRUE, TRUE);
|
| 468 |
}
|
| 469 |
return $output;
|
| 470 |
}
|
| 471 |
|
| 472 |
function theme_lovehate_detail_page($term, $score = NULL, $lovers = array(), $haters = array()) {
|
| 473 |
global $user;
|
| 474 |
|
| 475 |
drupal_set_title($term->name);
|
| 476 |
$breadcrumbs = drupal_get_breadcrumb();
|
| 477 |
$breadcrumbs[] = l(t('loves and hates'), 'lovehate');
|
| 478 |
drupal_set_breadcrumb($breadcrumbs);
|
| 479 |
|
| 480 |
$output .= '<p>' . $term->description . '</p>';
|
| 481 |
|
| 482 |
if ($user->uid && user_access('choose loves and hates')) {
|
| 483 |
if ($score->current_user == 1) {
|
| 484 |
$output .= '<p>You LOVE ' . $term->name . '! ' . theme('lovehate_vote_widget', $term) . '</p>';
|
| 485 |
}
|
| 486 |
else if ($score->current_user == -1) {
|
| 487 |
$output .= '<p>You HATE ' . $term->name . '! ' . theme('lovehate_vote_widget', $term) . '</p>';
|
| 488 |
}
|
| 489 |
else {
|
| 490 |
$output .= '<p>You don\'t care about ' . $term->name . '. ' . theme('lovehate_vote_widget', $term) . '</p>';
|
| 491 |
}
|
| 492 |
}
|
| 493 |
|
| 494 |
$output .= '<h4>Lovers</h4>';
|
| 495 |
$output .= theme('lovehate_users', $lovers);
|
| 496 |
|
| 497 |
$output .= '<h4>Haters</h4>';
|
| 498 |
$output .= theme('lovehate_users', $haters);
|
| 499 |
|
| 500 |
return $output;
|
| 501 |
}
|
| 502 |
|
| 503 |
function theme_lovehate_user_page($uid = 0, $loves = array(), $hates = array(), $other = array()) {
|
| 504 |
$output = '<div id="loves"><h2>Love it!</h2>';
|
| 505 |
foreach ($loves as $term) {
|
| 506 |
$output .= theme('lovehate_term', $term);
|
| 507 |
}
|
| 508 |
$output .= '</div>';
|
| 509 |
|
| 510 |
$output .= '<div id="hates"><h2>Hate it!</h2>';
|
| 511 |
foreach ($hates as $term) {
|
| 512 |
$output .= theme('lovehate_term', $term);
|
| 513 |
}
|
| 514 |
$output .= '</div>';
|
| 515 |
|
| 516 |
$output .= '<div id="other"><h2>Who cares?</h2>';
|
| 517 |
foreach ($other as $term) {
|
| 518 |
$output .= theme('lovehate_term', $term);
|
| 519 |
}
|
| 520 |
$output .= '</div>';
|
| 521 |
return $output;
|
| 522 |
}
|
| 523 |
|
| 524 |
function theme_lovehate_term($term, $show_description = FALSE, $show_count = FALSE) {
|
| 525 |
$output = '<div class="lovehate_term_detail">';
|
| 526 |
$output .= '<h3>' . l($term->name, 'lovehate/' . $term->tid);
|
| 527 |
if (user_access('choose loves and hates')) {
|
| 528 |
$output .= theme('lovehate_vote_widget', $term);
|
| 529 |
}
|
| 530 |
$output .= '</h3>';
|
| 531 |
if ($show_description) {
|
| 532 |
$output .= '<p>' . $term->description . '</p>';
|
| 533 |
}
|
| 534 |
if ($show_count) {
|
| 535 |
$output .= '<p>Lovers: ' . $term->lovehate->lovers . ' | Haters: ' . $term->lovehate->haters . '</p>';
|
| 536 |
}
|
| 537 |
$output .= '</div>';
|
| 538 |
return $output;
|
| 539 |
}
|
| 540 |
|
| 541 |
function theme_lovehate_users($users) {
|
| 542 |
$limit = variable_get('lovehate_user_count', 50);
|
| 543 |
$count = 0;
|
| 544 |
$names = array();
|
| 545 |
foreach ($users as $uid) {
|
| 546 |
$name = user_load(array('uid'=>$uid));
|
| 547 |
$names[] = theme('username', $name);
|
| 548 |
$count++;
|
| 549 |
if ($count > $limit) {
|
| 550 |
break;
|
| 551 |
}
|
| 552 |
}
|
| 553 |
$output .= '<p>' . implode(', ', $names) . '</p>';
|
| 554 |
|
| 555 |
return $output;
|
| 556 |
}
|
| 557 |
|
| 558 |
function theme_lovehate_vote_widget($term) {
|
| 559 |
$options = array();
|
| 560 |
if ($term->lovehate->current_user != 1) {
|
| 561 |
$options[] = '<span class="lovehate_love_widget">' . l('+', "lovehate/vote/$term->tid/1", array(), drupal_get_destination()) . '</span>';
|
| 562 |
}
|
| 563 |
if ($term->lovehate->current_user != 0) {
|
| 564 |
$options[] = '<span class="lovehate_neither_widget">' . l('x', "lovehate/vote/$term->tid/0", array(), drupal_get_destination()) . '</span>';
|
| 565 |
}
|
| 566 |
if ($term->lovehate->current_user != -1) {
|
| 567 |
$options[] = '<span class="lovehate_hate_widget">' . l('-', "lovehate/vote/$term->tid/-1", array(), drupal_get_destination()) . '</span>';
|
| 568 |
}
|
| 569 |
return ' (' . implode('/', $options) . ')';
|
| 570 |
}
|
| 571 |
|
| 572 |
function theme_lovehate_block_list($terms) {
|
| 573 |
foreach($terms as $term) {
|
| 574 |
$links[] = l($term->name, "lovehate/$term->tid", array('title' => 'Total score: '.$term->lovehate->score));
|
| 575 |
}
|
| 576 |
return theme('item_list', $links);
|
| 577 |
}
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