/**
* Return filter params
*
* @return array
*/
public function getFilterParams()
{
$prefix = null !== $this->_filter ? $this->_filter->getPrefix() : null;
if (null === $prefix) {
$params = $this->_params;
} elseif (!isset($this->_params[$prefix])) {
$params = [];
} else {
$params = $this->_params[$prefix];
}
$normalizeParams = [];
if (null === $this->_filter) {
return $params;
}
foreach ($this->_filter->getFields() as $field) {
$key = $field->getKey();
if (isset($params[$key]) && $params[$key] !== '') {
$normalizeParams[$key] = $params[$key];
}
}
return $normalizeParams;
}
