Slim 3 blackholing errors - slim

Question

I have a small slim 3 app, and when I throw an exception slim simply shows the generic error message:
Slim Application Error
A website error has occurred. Sorry for the temporary inconvenience.
In slim 2 you can do something like this to turn on debug mode giving you backtraces etc:
$app->config('debug', true);
In slim 3 there doesn't seem to be one. Additionally, it seems to be overriding my exception and error handlers.
How can I get slim to spit out errors, or at least to call my error handlers (Which pipe the output to kint for debug information)

Answer 1

Looking through the source, it's possible to initialize slim 3 with error display like so:
$app = new \Slim\App(['settings' => ['displayErrorDetails' => true]]);
I'm not sure if it's possible to change this setting after the fact without replacing the errorHandler altogether.

Answer 2

To show full stack trace on default exception handler use what j-v said.
If you want to handle exceptions in Slim yourself then you need to override Slim's default exception handler as it will be used before your "not in Slim" error handler:
$app = new \Slim\App();
$container = $app->getContainer();
$container['errorHandler'] = function(ServerRequestInterface $request, ResponseInterface $response, Exception $exception) {
//Handle exception here
}

Answer 3

Error handling is rather well documented: Official Docs
$app = new \Slim\App();
$c = $app->getContainer();
$c['errorHandler'] = function ($c) {
return function ($request, $response, $exception) use ($c) {
return $c['response']->withStatus(500)
->withHeader('Content-Type', 'text/html')
->write('Something went wrong!');
};
};

Answer 4

Error handling is best solution to this. You can do something like to see Error Trace
$app = new \Slim\App();
$container = $app->getContainer();
$container['phpErrorHandler'] = $container['errorHandler'] = function ($c) {
return function ($request, $response, $exception) use ($c) {
return $c['response']->withStatus(500)
->withHeader('Content-Type', 'text/html')
->write('Something went wrong!<br><br>' .
nl2br($error->getTraceAsString()));
};
};

Answer 5

Make displayErrorDetails->true.
You will find cause of error.
$config = ['settings' => [
'addContentLengthHeader' => true,
'displayErrorDetails' => true
]];
$app = new \Slim\App($config)