I'm working on a Catalyst application and find myself doing something like:

    eval { $form->model->create };

    if ($@ =~ /column (\w+) is not unique/) {
        $form->get_field($1)
             ->get_constraint({type => 'Callback'})
             ->force_errors(1);
        $form->process;
    }

[download]

Basically, I'm parsing the raw error message from my DBI engine (DBD::SQLite in this case).

If I switched to a different engine, I would probably get a different error message, so this would fail. Is there a way to find out the type of error and the column name it failed on? I checked $@, because it's an exception, but it only has a 'msg' method.

Ideally, I would like to do something like:

    eval { $form->model->create };

    if ($e =~ Exception::Class->caught('DBI::Unique')) {
        $form->get_field($e->column)
             ->get_constraint({type => 'Callback'})
             ->force_errors(1);
        $form->process;
    }

[download]

Is there some way to achieve this?

--
Lyon

In reply to post mortem on DBI errors by redlemon

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