Question

this is the sql query i used before i switch to codeigniter

UPDATE transaction SET due_amount = to_pay-$payment_amount WHERE id = '$id'

with codeigniter

$this->db->set('due_amount', 'to_pay-'.$payment_amount, FALSE);                
$this->db->where('id', $id); 
$result = $this->db->update('transaction');

in the codeigniter code am i writing $this->db->set correctly?

Regards

Answer 1

There are multiple variants to use the update^Docs function. Yours doesn’t look specifically bad (I would however don’t bypass escaping if not for a specific reason), maybe you prefer to use an array (or object) to provide the data being updated:

$data = array(
    'due_amount' => 'to_pay-'.$payment_amount,
);
$this->db->update('transaction', $data, sprintf('id = %d', $id));