Hey Tim --
> Say, has anyone got a minimal example of embedding AJAX into
> a CGI::APP,
> preferably using some library to abstract the Javascript (CGI::Ajax or
> SAJAX or something else) ?
I'm sure a few other people will email you examples of AJAX
implementations. I just wanted to make one point: CGI-App's "run
modes" construct is perfect for AJAX applications.
AJAX is, essentially, a single web page which has functions within it
which require server side integration. Put most simply: Web functions
*WITHOUT* their own web page. This is the exact opposite of a "server
page" system (Mason, EmbPerl, ASP, JSP, PHP, etcetera). This is,
however, exactly the purpose of CGI::Application. Functions without
pages.
Consider a function to do auto-completion of a form field in-page. One
example might be product IDs -- the user types in the first couple
letters, and possible completions appear as drop-down options. This
would easily be implemented as a run-mode:
sub propose_products {
my $self = shift;
my $q = $self->query();
my $prefix = $q->param('product_name');
my @candidates = $self->get_products_starting($prefix);
return join("\n", @candidates);
}
Your Javascript would make an HTTP request on timeout (for example, when
the user stops typing for a couple seconds). That request would be
internal, and would get back a line-delimited list of options, which
would then be displayed via DHTML.
Through this structure, it is easy to see how CGI::Application's
inherent philosophy is eminently compatibly with AJAX. (In fact, it's
almost like it was made for it!)
TTYL,
-Jesse-
--
Jesse Erlbaum
The Erlbaum Group
[EMAIL PROTECTED]
Phone: 212-684-6161
Fax: 212-684-6226
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