[Catalyst] Multiple chaining to same action ...

[Kiffin Gish]

In my application, users are allowed to edit only their own settings
like this:

/account/id/client/settings/edit

| /role/*/settings/edit | /auth (0)                       |
|                       | -> /role/base (1)               |
|                       | -> /role/settings/crud/base (0) |
|                       | => /role/settings/crud/edit     |

# Controller::Role
sub base : Chained('/auth') PathPart('role') CaptureArgs(1) {
    my ( $self, $c, $id ) = @_;

    # Get the user if possible.
    my $user = $c->model('DB::User')->find($id);

    # Make sure that the user is indeed this user.
    $c->detach('/error_403') unless $c->user->id == $id;

    # Save the user in the stash.
    $c->stash( user => $user );
}

# Controller::Role::Settings::CRUD
sub base : Chained('/role/base') PathPart('settings') CaptureArgs(0)
{...}

sub edit : Chained('base') PathPart('edit') Args(0) {
    my ( $self, $c ) = @_;
    my $user = $c->stash->{user};
    ....
}

Now the hard part.

I also want to allow the admin to be able to edit all user settings in
exactly the same way, like this:

/account/id/admin/user/id/settings/edit

# Controller::Role::Admin::User
sub base : Chained('/role/admin/base') PathPart('user') CaptureArgs(0)
{...}

sub id : Chained('base') PathPart('') CaptureArgs(1) {
    my ( $self, $c, $id ) = @_;

    # Get the user if possible.
    my $user = $c->model('DB::User')->find($id);

    # Does this user exist?
    $c->detach('/error_404') unless ($user);

    # Save the user in the stash.
    $c->stash( user => $user );
}

sub edit : Chained('base') PathPart('settings') Args(0) {...}

As you can see there's alot of repetition going on and there must be a
more elegant way to handle this.

How does one go about chaining the same action from multiple points.
Does this make sense and if so is it possible?

Thanks alot in advance,
Kiffin


-- 
Kiffin Gish <Kiffin.Gish at planet.nl>
Gouda, The Netherlands