How would I use ON DUPLICATE KEY UPDATE in my CodeIgniter model?

Question

I have a CodeIgniter/PHP Model and I want to insert some data into the database.

However, I have this set in my \'raw\' SQL query:

ON DUPLICATE KEY U         


        

Answer 1

You can tweak the active record function with minimal addition:

DB_driver.php add inside the class:

protected $OnlyReturnQuery = false;
public function onlyReturnQuery($return = true)
{
    $this->OnlyReturnQuery = $return;
}

find function query( ...and add at the very beginning:

    if ($this->OnlyReturnQuery) {
        $this->OnlyReturnQuery = false;
        return $sql;
    }

and finally in DB_active_rec.php add function:

public function insert_or_update($table='', $data=array())
{
    $this->onlyReturnQuery();
    $this->set($data);
    $insert = $this->insert($table);
    $this->onlyReturnQuery();
    $this->set($data);
    $update = $this->update($table);
    $update = preg_replace('/UPDATE.*?SET/',' ON DUPLICATE KEY UPDATE',$update);
    return $this->query($insert.$update);
}

Now you can use it as:

$this->db->insert_or_update('table',array $data);

Pros: uses all the active record validation Cons: it is not the best (the most proper) way of extending the function, because if you are planning to update these files, you will have to redo the procedure.