Codeigniter - throw exception if database transaction fails - php

Question

I am trying catch database errors within a transaction and if one occurs then rollback and throw an exception.
However, the code is stopping and displaying the db error screen before it throws the exception.
Any ideas how I can make it detect db error without stopping running the subsequent code?
try {
$this->my_function($data);
} catch (Exception $e) {
var_dump($e);
}
private function my_function($data)
{
$this->db->trans_start();
foreach($data as $reg)
{
$sql = $this->db->insert_string('my_table', $reg);
if($this->db->query($sql))
{
continue;
} else {
$this->db->trans_rollback();
throw new Exception('Exception message here...');
}
}
$this->db->trans_complete();
}

Answer 1

This has been answered before on this question
As answered by cwallenpoole:
In application/config/database.php set
// suppress error output to the screen
$db['default']['db_debug'] = FALSE;
In your model or controller:
// try the select.
$dbRet = $this->db->select($table, $dataArray);
// select has had some problem.
if( !$dbRet )
{
$errNo = $this->db->_error_number()
$errMess = $this->db->_error_message();
// Do something with the error message or just show_404();
}
Or in you case:
private function my_function($data)
{
$errors = array();
$this->db->trans_start();
foreach($data as $reg)
{
$sql = $this->db->insert_string('my_table', $reg);
if($this->db->query($sql))
{
continue;
} else {
$errNo = $this->db->_error_number()
$errMess = $this->db->_error_message();
array_push($errors, array($errNo, $errMess));
}
}
$this->db->trans_complete();
// use $errors...
}
Even better
I believe this question has all the answers you need because it takes multiple inserts into account and let's you finish the once that did not return an error.