public function TaxonomyIndexProductTidDepth::query in Commerce: Product taxonomy filter 8

Same name and namespace in other branches

1. 8.2 src/Plugin/views/filter/TaxonomyIndexProductTidDepth.php \Drupal\product_taxonomy_filter\Plugin\views\filter\TaxonomyIndexProductTidDepth::query()

Add this filter to the query.

Due to the nature of fapi, the value and the operator have an unintended level of indirection. You will find them in $this->operator and $this->value respectively.

Overrides InOperator::query

File

src/Plugin/views/filter/TaxonomyIndexProductTidDepth.php, line 55

Class

TaxonomyIndexProductTidDepth

Filter handler for taxonomy terms with depth.

Namespace

Drupal\product_taxonomy_filter\Plugin\views\filter

Code

public function query() {

  // Get the DB table and reference column name from the reference field name.
  $refFieldName = $this->options['reference_field'] . '_target_id';
  $refTableName = 'commerce_product__' . $this->options['reference_field'];

  // If no filter values are present, then do nothing.
  if (count($this->value) == 0) {
    return;
  }
  elseif (count($this->value) == 1) {

    // Sometimes $this->value is an array with a single element so convert it.
    if (is_array($this->value)) {
      $this->value = current($this->value);
    }
    $operator = '=';
  }
  else {
    $operator = 'IN';
  }

  // The normal use of ensureMyTable() here breaks Views.
  // So instead we trick the filter into using the alias of the base table.
  //   See https://www.drupal.org/node/271833.
  // If a relationship is set, we must use the alias it provides.
  if (!empty($this->relationship)) {
    $this->tableAlias = $this->relationship;
  }
  else {
    $this->tableAlias = $this->query
      ->ensureTable($this->view->storage
      ->get('base_table'));
  }

  // Now build the subqueries.
  $subquery = db_select($refTableName, 'tn');
  $subquery
    ->addField('tn', 'entity_id');
  $where = (new Condition('OR'))
    ->condition('tn.' . $refFieldName, $this->value, $operator);
  $last = "tn";
  if ($this->options['depth'] > 0) {
    $subquery
      ->leftJoin('taxonomy_term_hierarchy', 'th', "th.tid = tn." . $refFieldName);
    $last = "th";
    foreach (range(1, abs($this->options['depth'])) as $count) {
      $subquery
        ->leftJoin('taxonomy_term_hierarchy', "th{$count}", "{$last}.parent = th{$count}.tid");
      $where
        ->condition("th{$count}.tid", $this->value, $operator);
      $last = "th{$count}";
    }
  }
  elseif ($this->options['depth'] < 0) {
    foreach (range(1, abs($this->options['depth'])) as $count) {
      $subquery
        ->leftJoin('taxonomy_term_hierarchy', "th{$count}", "{$last}.tid = th{$count}.parent");
      $where
        ->condition("th{$count}.tid", $this->value, $operator);
      $last = "th{$count}";
    }
  }
  $subquery
    ->condition($where);
  $this->query
    ->addWhere($this->options['group'], "{$this->tableAlias}.{$this->realField}", $subquery, 'IN');
}