Vsevolod (Simon) Ilyushchenko wrote:
> How would I deal with the following, in Maypole or otherwise?
I'm not sure I've understood your question, so forgive me if I go off at
a tangent.
> Suppose I have to enter a date on several web pages. I include a
> template for displaying dates into the templates for my web pages, and I
> have a DateController class that is created and owned by each page's
> controller.
I'm not sure what the page controller is here? I guess the corresponding
entity in Maypole would be the do_edit action of the page's model class?
If so, the Model, View and StandardTemplate chapters of the manual have
some explanation of how that works in Maypole.
> However, I have to exchange data (day/month/year) between the main model
> instance and the the DateController instance. I am doing this pretty
> haphazardly, and I wonder if someone wrote any standard ways of
> accomplishing this.
For dates in particular, and also as an example of the general case,
Maypole relies on the model's facilities (i.e. CDBI). You would pick a
suitable class to model a date (Time::Piece is the usual example) and
tell CDBI and friends to use it by calling has_a (see the Class::DBI
docs) and untaint_columns (see Class::DBI::FromCGI and CGI::Untaint).
Maypole has the concept of component requests (i.e. bits of pages with
different models etc) on output but AFAIK it doesn't have a standard way
to do that on input. But you could easily code the top-level responding
action to call component actions to deal with parts of the input. The
interface would be by side-effect - changed state in the model - unless
you wanted to code specific features into the method calls. But this
sounds OK; going back to the object in the model that represents your
date and asking it for its value seems like the right thing to do.
Cheers, Dave
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