Yajra\Datatables\Request::isColumnSearchable PHP Method

    public function isColumnSearchable($i, $column_search = true)
    {
        if ($column_search) {
            return $this->input("columns.{$i}.searchable") === 'true' && $this->columnKeyword($i) != '';
        }
        return $this->input("columns.{$i}.searchable") === 'true';
    }