Exact DB Error

If you want to catch Eloquent Query exceptions, use specific QueryException instead default Exception class, and you will be able to get the exact SQL code of the error.

try {
    // Some Eloquent/SQL statement
} catch (\Illuminate\Database\QueryException $e) {
    if ($e->getCode() === '23000') { // integrity constraint violation
        return back()->withError('Invalid data');
    }
}