re-stash form.

sub update : Chained('object') PathPart('update') Args(0) {
    my ( $self, $c ) = @_;
    my $media_dir = '/deployment/' . $c->config->{'Locales'}->{$c->stash->{lang}} . '/' . $c->config->{$c->stash->{episode}->images->result_source->source_name}->{deploy_dir} if $c->stash->{episode};
        $c->stash( media_dir => $media_dir ) if $media_dir;
    my $form = EpisodeForm->new(media_directory => dir($media_dir));
    my $item = $c->stash->{episode};
    
    if (lc $c->req->method eq 'post') {
        $c->stash(episode => $item, form => $form );
        $c->req->params->{'file'}      = $c->req->upload('file');
        $c->req->params->{'thumbnail'} = $c->req->upload('thumbnail');
        $c->stash(template => 'cms/episode/create_update.tt2'); 
        $form->process(
              ctx => $c,
              item   => $item,
              schema => $c->stash->{schema},
              params => $c->req->params, 
            );
        $c->stash( fillinform => $form->fif);
        $c->log->debug(Dwarn $form->errors);
        return unless $form->validated;
        $c->flash( status_msg => 'Episode edited' );

        return $c->res->redirect(
            $c->uri_for(
                $c->controller('CMS::Episode')->action_for('display'), [ $c->stash->{episode}->id]));
    }