fliterComponent.php

public function checkFilterFields($filter)
    {
        $filterErrors           = array();
        $filter['filter_param'] = array_filter(
            $filter['filter_param'], 
            function($filterParam) use (&$filterErrors) {
                if (in_array("", $filterParam)) {
                    if ($filterParam[1] == "") {
                        $filterErrors[] = "first filter field is missing";
                    } else if ($filterParam[2] == "") {
                        $filterErrors[] = $filterParam[1];
                    } else {
                        //$filterErrors[] = $filterParam[1]." ".$filterParam[2];
                        $filterErrors[] = localizedValue($filterParam[1])." ".localizedValue($filterParam[2]);
                    } 
                    return false;  //will filter out
                }
                return true;   // will keep this filter
            });
        
        $filterCheck['filter'] = $filter;
        $filterCheck['filterErrors'] = $filterErrors;
        return $filterCheck;
    }
    

    public function localizedValue(&$filterParam)
    {
        $t = array(
            'not-with' => __('not with'),
            'start-with' => __('start with'),
            'phone' => __('phone'),
            'tagged' => __('tagged'));
        
        $localizedLabel = $t[$filterParam];
        //print_r($localizedLabel);
        //$checkedFilterErrorsValue = str_replace('-', ' ', $checkedFilterErrors);
        return $localizedLabel;        
    }