CSV Import with where clause in Model Codeigniter - csv

Question

This is my code. I don't know what should I do now, because I'mm really confused in this problem.
in Controller for CSV Import
function import()
{
$this->load->library('csvreader');
$result = $this->csvreader->parse_file('./application/upload/financialloss.csv');
foreach($result as $value=>$key){
$date_report = date("Y-m-d H:i:s");
$handlingdate = $key['Handling Date'];
$handlingdate2 = strtotime($handlingdate);
$handlingdate3 = date('Y-m-d',$handlingdate2);
$nominal_awal = trim(preg_replace('/\s\s+/', ' ', str_replace("\n", " ", $key['Transactions Nominal'])));
$nominal = str_replace(",","", $key['Transactions Nominal']);
$nominal1 = str_replace(".","", $nominal);
$nominal2 = str_replace("Rp","", $nominal1);
$tblfinancialloss = array(
'handlingdate' => $handlingdate3,
'lossdate' => $key['Loss Date'],
'ticketid' => $key['Ticket ID'],
'reporteremail' => $key['Reporter Email'],
'reporterusername' => $key['Reporter Username'],
'transactionsfraud' => $key['Transactions Fraud'],
'transactionsfinancialloss' => $key['Transactions Financial Loss'],
'transactionsnominal' => $nominal2,
'cityofuser' => $key['City of User'],
'provinceofuser' => $key['Province of User'],
'transactionscategory' => $key['Transactions Category'],
'casecategory' => $key['Case Category'],
'sourcedata' => $key['Source Data'],
'linkphisingmedia' => $key['Link Phising Media'],
'notesloss' => $key['Notes'],
'dateinput' => $date_report,
'inputby' => "by ".$this->session->userdata('name')
);
if(empty($key['Loss Date'])){
$this->session->set_flashdata('msg','TES1');
redirect(base_url()."index.php/DashboardFinancial/AddFinancialLoss");
}
else{
$this->Csv_Import_model->insert($tblfinancialloss);
$this->session->set_flashdata('msgs',' data, uploaded today !');
}
}
//unlink('./assets/data.csv');
}
And this is My Model for CSV Import
function insert($data)
{
$this->dbfinanciallossandsave= $this->load->database('financiallossandsave', TRUE);
$insert_query1 = $this->dbfinanciallossandsave->insert_string('tblfinancialloss', $data);
$insert_query = str_replace('INSERT INTO','INSERT IGNORE INTO',$insert_query1);
$date = date("Y-m-d");
$this->dbfinanciallossandsave->where('handlingdate <=', $date);
//$this->dbfinanciallossandsave->where('lossdate <=', $date);
$this->dbfinanciallossandsave->query($insert_query);
}
And my model for where condition can't work. Can you help me?