/**
* Implements \Drupal\block\BlockBase::blockBuild().
*/
public function build()
{
static $vocabularies, $terms;
$items = array();
$faq_settings = \Drupal::config('faq.settings');
if (!$faq_settings->get('use_categories')) {
return;
}
$moduleHandler = \Drupal::moduleHandler();
if ($moduleHandler->moduleExists('taxonomy')) {
if (!isset($terms)) {
$terms = array();
$vocabularies = Vocabulary::loadMultiple();
$vocab_omit = array_flip($faq_settings->get('omit_vocabulary'));
$vocabularies = array_diff_key($vocabularies, $vocab_omit);
foreach ($vocabularies as $vocab) {
foreach (taxonomy_get_tree($vocab->vid) as $term) {
if (FaqHelper::taxonomyTermCountNodes($term->tid)) {
$terms[$term->name] = $term->tid;
}
}
}
}
if (count($terms) > 0) {
foreach ($terms as $name => $tid) {
$items[] = l($name, 'faq-page/' . $tid);
}
}
}
return array('#theme' => 'item_list', '#items' => $items, '#list_type' => $faq_settings->get('category_listing'));
}
/**
* Return a structured array that consists a list of terms indented according to the term depth.
*
* @param $vid
* Vocabulary id.
* @param $tid
* Term id.
* @return
* Return an array of a list of terms indented according to the term depth.
*/
private function _getIndentedFaqTerms($vid, $tid)
{
//if ($this->moduleHandler()->moduleExists('pathauto')) {
// pathauto does't exists in D8 yet
//}
$faq_settings = \Drupal::config('faq.settings');
$display_faq_count = $faq_settings->get('count');
$hide_child_terms = $faq_settings->get('hide_child_terms');
$items = array();
$tree = taxonomy_get_tree($vid, $tid, 1, TRUE);
foreach ($tree as $term) {
$term_id = $term->id();
$tree_count = FaqHelper::taxonomyTermCountNodes($term_id);
if ($tree_count) {
// Get term description.
$desc = '';
$term_description = $term->getDescription();
if (!empty($term_description)) {
$desc = '<div class="faq-qa-description">';
$desc .= $term_description . "</div>";
}
$query = db_select('node', 'n');
$query->join('node_field_data', 'd', 'n.nid = d.nid');
$query->innerJoin('taxonomy_index', 'ti', 'n.nid = ti.nid');
$term_node_count = $query->condition('d.status', 1)->condition('n.type', 'faq')->condition("ti.tid", $term_id)->addTag('node_access')->countQuery()->execute()->fetchField();
if ($term_node_count > 0) {
$path = "faq-page/{$term_id}";
// pathauto is not exists in D8 yet
//if (!\Drupal::service('path.alias_manager.cached')->getPathAlias(arg(0) . '/' . $tid) && $this->moduleHandler()->moduleExists('pathauto')) {
//}
if ($display_faq_count) {
$count = $term_node_count;
if ($hide_child_terms) {
$count = $tree_count;
}
$cur_item = l($this->t($term->getName()), $path) . " ({$count}) " . $desc;
} else {
$cur_item = l($this->t($term->getName()), $path) . $desc;
}
} else {
$cur_item = $this->t($term->getName()) . $desc;
}
if (!empty($term_image)) {
$cur_item .= '<div class="clear-block"></div>';
}
$term_items = array();
if (!$hide_child_terms) {
$term_items = $this->_getIndentedFaqTerms($vid, $term_id);
}
$items[] = array("item" => $cur_item, "children" => $term_items);
}
}
return $items;
}
/**
* Helper function to setup the list of sub-categories for the header.
*
* @param $term
* The term to setup the list of child terms for.
* @return
* An array of sub-categories.
*/
public static function viewChildCategoryHeaders($term)
{
$child_categories = array();
$list = taxonomy_term_load_children($term->id());
foreach ($list as $tid => $child_term) {
$term_node_count = FaqHelper::taxonomyTermCountNodes($child_term->id());
if ($term_node_count) {
// Get taxonomy image.
$term_image = '';
//taxonomy_image does not exists in D8 yet
//if (module_exists('taxonomy_image')) {
// $term_image = taxonomy_image_display($child_term->tid, array('class' => 'faq-tax-image'));
//}
$child_term_id = $child_term->id();
$term_vars['link'] = l(t($child_term->getName()), "faq-page/{$child_term_id}");
$term_vars['description'] = t($child_term->getDescription());
$term_vars['count'] = $term_node_count;
$term_vars['term_image'] = $term_image;
$child_categories[] = $term_vars;
}
}
return $child_categories;
}
/**
* {@inheritdoc}
*/
public function buildForm(array $form, FormStateInterface $form_state, $category = NULL)
{
//get category id from route values
if (is_numeric(FaqHelper::arg(1))) {
$category = FaqHelper::arg(1);
}
$order = $date_order = '';
$faq_settings = $this->config('faq.settings');
$use_categories = $faq_settings->get('use_categories');
if (!$use_categories) {
$step = "order";
} elseif (!isset($form_state['values']) && empty($category)) {
$step = "categories";
} else {
$step = "order";
}
$form['step'] = array('#type' => 'value', '#value' => $step);
// Categorized q/a.
if ($step == "categories") {
// Get list of categories.
$vocabularies = Vocabulary::loadMultiple();
$options = array();
foreach ($vocabularies as $vid => $vobj) {
$tree = taxonomy_get_tree($vid);
foreach ($tree as $term) {
if (!FaqHelper::taxonomyTermCountNodes($term->tid)) {
continue;
}
$options[$term->tid] = $this->t($term->name);
$form['choose_cat']['faq_category'] = array('#type' => 'select', '#title' => t('Choose a category'), '#description' => t('Choose a category that you wish to order the questions for.'), '#options' => $options, '#multiple' => FALSE);
$form['choose_cat']['search'] = array('#type' => 'submit', '#value' => t('Search'), '#submit' => array('faq_order_settings_choose_cat_form_submit'));
}
}
} else {
$default_sorting = $faq_settings->get('default_sorting');
$default_weight = 0;
if ($default_sorting != 'DESC') {
$default_weight = 1000000;
}
$options = array();
if (!empty($form_state['values']['faq_category'])) {
$category = $form_state['values']['faq_category'];
}
// Uncategorized ordering.
$query = db_select('node', 'n');
$query->join('node_field_data', 'd', 'n.nid = d.nid');
$query->fields('n', array('nid'))->fields('d', array('title'))->addTag('node_access')->condition('n.type', 'faq')->condition('d.status', 1);
// Works, but involves variable concatenation - safe though, since
// $default_weight is an integer.
$query->addExpression("COALESCE(w.weight, {$default_weight})", 'effective_weight');
// Doesn't work in Postgres.
//$query->addExpression('COALESCE(w.weight, CAST(:default_weight as SIGNED))', 'effective_weight', array(':default_weight' => $default_weight));
if (empty($category)) {
$category = 0;
$w_alias = $query->leftJoin('faq_weights', 'w', 'n.nid = %alias.nid AND %alias.tid = :category', array(':category' => $category));
$query->orderBy('effective_weight', 'ASC')->orderBy('d.sticky', 'DESC')->orderBy('d.created', $default_sorting == 'DESC' ? 'DESC' : 'ASC');
} else {
$ti_alias = $query->innerJoin('taxonomy_index', 'ti', '(n.nid = %alias.nid)');
$w_alias = $query->leftJoin('faq_weights', 'w', 'n.nid = %alias.nid AND %alias.tid = :category', array(':category' => $category));
$query->condition('ti.tid', $category);
$query->orderBy('effective_weight', 'ASC')->orderBy('d.sticky', 'DESC')->orderBy('d.created', $default_sorting == 'DESC' ? 'DESC' : 'ASC');
}
$options = $query->execute()->fetchAll();
$form['weight']['faq_category'] = array('#type' => 'value', '#value' => $category);
// Show table ordering form.
$form['order_no_cats']['#tree'] = TRUE;
$form['order_no_cats']['#theme'] = 'faq_draggable_question_order_table';
foreach ($options as $i => $record) {
$form['order_no_cats'][$i]['nid'] = array('#type' => 'hidden', '#value' => $record->nid);
$form['order_no_cats'][$i]['title'] = array('#markup' => String::checkPlain($record->title));
$form['order_no_cats'][$i]['sort'] = array('#type' => 'weight', '#delta' => count($options), '#default_value' => $i);
}
$form['actions']['#type'] = 'actions';
$form['actions']['submit'] = array('#type' => 'submit', '#value' => $this->t('Save order'), '#button_type' => 'primary');
}
return $form;
}