[Catalyst] Pushing data to Catalyst powered web page

[Supra, Morne]

Hi all

I did the following to get data to push to the web page:

Scenario:
An RFID tag is read and processed by an ALE server. The ALE server then
sends the data to my Catalyst URL:
http://x.x.x.x:3000/ale/notifier?tagdata

The ale/notifier action then extracts the tag id from the variable and
then does a lookup in a database to get the data associated to the tag.
It then puts the tag data in a queue and the last action is to make a
socket connection, as a client, to a socket server running inside the
/assettracker/display_tagdata action. The following code is an extract
from the ale/notifier:

sub notify_tag_read {
	use IO::Socket::INET;
	my $MySocket=new
IO::Socket::INET->new(PeerPort=>26482,Proto=>'udp',PeerAddr=>'x.x.x.x');
	my $msg = "";
	$MySocket->send($msg);
}

When I access, via a browser, the url
http://x.x.x.x:3000/assettracker/display_tagdata
it loads a socket server and waits for a connection from a client. The
following is a snippet of the /assettracker/display_tagdata action:

sub display_tagdata : Local {
	my ( $self, $c ) = @_;
	my $text;
	my @args;
	$c->stash->{template} = 'sockettest.tt2';
	
	use IO::Socket::INET;

	my $MySocket=new
IO::Socket::INET->new(LocalPort=>26482,Proto=>'udp',Reuse=>1);

	$MySocket->recv($text,128);
	@args = [$text];	
	$c->forward('get_tagdata',\@args);

}

This action will then forward to /assettracker/get_data to retrieve the
data from the queue and display it in the browser.

I know that the code is not great, but it works. Thank you for all the
assistance that I received.

Regards
Morne

-----Original Message-----
From: Bill Moseley [mailto:moseley at hank.org] 
Sent: 12 September 2008 09:46 PM
To: The elegant MVC web framework
Subject: Re: [Catalyst] Pushing data to Catalyst powered web page

On Fri, Sep 12, 2008 at 02:15:23PM +0200, Supra, Morne wrote:
> 
> The problem that I have is that I have no idea how to push the data to
a
> web page instead of pulling.

Pull with an AJAX update, perhaps.

-- 
Bill Moseley
moseley at hank.org
Sent from my iMutt


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