(Sorry for English) Hi, currently I'm making an web application using only CGI module
And I'm not using frameworks like Catalyst,Dancer.. because I love DIY.
But programming with MVC pattern I have some trouble.

1. refine data and pass to the function vs pass raw data to the function and function refines the data

for example :

search_by_tags(split ',', $cgi->param('tags'));
[download]

versus

search_by_tags($cgi->param('tags')); # split called inside this functi
+on
[download]

2. I have two controller classes Controller::Admin and Controller::Auth and there is one bootstrap file index.pl
I wonder which is better design :

Each Controller class calls $self->get_view()->print_blabla() as a result and that method prints a piece of HTML

versus

Controller returns a piece of HTML and bootstrapping script index.pl prints it.
for example:

###index.pl
use Controller::Admin;
Controller::Admin->new()->run();
###Controller/Admin.pm
sub run(){
    my $auth = Controller::Auth->new();
    $auth->loggedin() or $auth->require_login(); return; # that prints
+ login page
    #
    #Do some tasks if the user has logged in
    #
}
[download]

versus

###index.pl
use Controller::Admin;
print Controller::Admin->new()->run();
###Controller/Admin.pm
sub run(){
    my $auth = Controller::Auth->new();
    $auth->loggedin() or return $auth->require_login(); # that RETURNS
+ login page
    #
    #Do some tasks if the user has logged in
    #
}
[download]

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