package main; # Controller;
for my $foodtype(sort keys %{$Model::data}) {
    my $food = Model::get_food($foodtype);
    View::show_food($foodtype,$food);
}

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You're right that my example that used qw(fruits vegies) gave the Controller knowledge of the Model. But so does yours. Yours breaks the MVC separation because the Controller now needs to know that the Model stores its data in a hash. If we add sub get_keys { sort keys %$data } to the Model, the Controller can then do this: for my $foodtype( Model::get_keys ) ... and thus be freed from knowing anything about how the Model stores things. If the Model changes to using a database, you could still have a Model::get_keys() method that would do a DISTINCT query and the Controller wouldn't need to change at all.

In reply to Re^3: Implementing Model-View-Controller by jZed
in thread Implementing Model-View-Controller by ghferrari

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