/**
* Determine filter type for specified attribute.
*
* @static
* @param \Magento\Eav\Model\Entity\Attribute $attribute
* @return string
* @throws \Magento\Framework\Exception\LocalizedException
*/
public static function getAttributeFilterType(\Magento\Eav\Model\Entity\Attribute $attribute)
{
if ($attribute->usesSource() || $attribute->getFilterOptions()) {
return self::FILTER_TYPE_SELECT;
} elseif ('datetime' == $attribute->getBackendType()) {
return self::FILTER_TYPE_DATE;
} elseif ('decimal' == $attribute->getBackendType() || 'int' == $attribute->getBackendType()) {
return self::FILTER_TYPE_NUMBER;
} elseif ('varchar' == $attribute->getBackendType() || 'text' == $attribute->getBackendType()) {
return self::FILTER_TYPE_INPUT;
} elseif ($attribute->isStatic()) {
return self::getStaticAttributeFilterType($attribute);
} else {
throw new \Magento\Framework\Exception\LocalizedException(__('We can\'t determine the attribute filter type.'));
}
}