/**
* Creates empty table of fields as $field_type => FieldGroup pairs
*
* @return array
*/
private function initFieldTable()
{
$table = array();
$field_types = FieldType::getConstants();
foreach ($field_types as $type) {
$field_group = new FieldGroup();
$field_group->setRelation($this->getFieldRelation($type));
$table[$type] = $field_group;
}
return $table;
}
/**
* Takes an array of query arguments and adds a sub-query
* (eg tax_query, meta_query, or date_query)
*
* @param array $query
* @param FieldGroup $field_group
* @param $field_type
* @param HttpRequest $request
* @return array
*/
private function addSubQuery(array $query, FieldGroup $field_group, $field_type, HttpRequest $request)
{
$classnames = array('taxonomy' => 'TaxQuery', 'meta_key' => 'MetaQuery', 'date' => 'DateQuery');
$fields = $field_group->getFields();
if (empty($classnames[$field_type]) || empty($fields)) {
return $query;
}
$s_query = $this->getSubQuery($classnames[$field_type], $fields, $field_group->getRelation(), $request);
if (!empty($s_query)) {
$query[RequestVar::wpQueryVar($field_type)] = $s_query;
}
return $query;
}