public function update(Charge $charge)
    {
        $query = $this->_db->prepare(' UPDATE t_charge SET 
		type=:type, dateOperation=:dateOperation, montant=:montant, 
		societe=:societe, designation=:designation, updated=:updated, updatedBy=:updatedBy
		WHERE id=:id') or die(print_r($this->_db->errorInfo()));
        $query->bindValue(':id', $charge->id());
        $query->bindValue(':type', $charge->type());
        $query->bindValue(':dateOperation', $charge->dateOperation());
        $query->bindValue(':montant', $charge->montant());
        $query->bindValue(':societe', $charge->societe());
        $query->bindValue(':designation', $charge->designation());
        $query->bindValue(':updated', $charge->updated());
        $query->bindValue(':updatedBy', $charge->updatedBy());
        $query->execute();
        $query->closeCursor();
    }