Question

I’m implementing a subscription in a DB. The email must be unique, so I have a UNIQUE index in the database. I have this code in my page init:

$f = $p->add('MVCForm');
$f->setModel('Account',array('name','surname','email'));
$f->elements['Save']->setLabel('Subscribe');

if($f->isSubmitted())
{
    try
    {
         $f->update();

         //More useful code to execute when all is ok :)

    }
    catch(Exception_ValidityCheck $v)
    {
        //Handles validity constraint from the model
        $f->getElement($v->getField())->displayFieldError($v->getMessage());
    }
    catch(SQLException $se)
    {
        //If I'm here there is a problem with the db/query or a duplicate email
    }
}

The only information in SQLException is a formatted HTML message, is this the only way to detect if the error is from a duplicated entry?

Answer 1

Here is one way to do it:

https://github.com/atk4/atk4-web/blob/master/lib/Model/ATK/User.php#L95

Although if you want to perform custom action on duplication, you should move getBy outside of the model, into page’s logic.