Hi,

I am rather new to Mojolicious and probably I am just being stupid, but I cannot figure out how to do achieve the exception handling behaviour I want with Mojolicious...

My problem is as follows:

I have some domain-specific classes that throw instances of Exception::Class that I want to use inside a Mojolicious REST-application.

What I would like to have is a way to set up an exception-handler where all exeptions would get routed to and where I would then determine which Template to render and which http-status code to return based on the class of the exception.

This is the closest I could achieve on my own to illustrate what I mean:

package Whatever::Controller
use Mojo::Base qw(Mojolicious::Controller);

use Whatever::Thingy;
use Whatever::Exceptions;    # <- based on Class::Exception

sub do_something {
  my($this)=@_;

  my $input = $this->param("input");

  # the following constructor potentially throws an exception
  my $thingy = Whatever::Thingy->new( input => $input );

  $this->stash( thingy=> $thingy );

  $this->render(
                  format => "html",
                  template => "thingy_template",
                );
  }
}

sub render_exception {
  my($this, $ex)=@_;

  # now do something based on the class of $ex
  if($ex->isa("Whathever::Exception::SourMilk") {
  $this->render(
                  format => "html",
                  template => "exception",
                  status => 501,
                  ex => $ex,
               );
  }
  else {.....} # and so on

}

1;
[download]

So what I want is that in case an exception is thrown I end up in an exception handler where I can than choose a template and a status-code based on the class of the exception.

I would like to have all exception-handling code in one place and not have to catch them in each controller action.

In the above code I can indeed render the exception with a template of my choosing but I cannot influence the http-status code (in case of an exception always 500 is returned to the client).

The problem of course is that (as the name implies) render_exception only renders the exception but does not seem to allow for the status code to be manipulated.

So does anyone know how to achieve what I would like to have?

Many thanks!

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