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From Rick <rapic...@gmail.com>
Subject Re: Apache::Session not updating (writing)
Date Wed, 11 May 2005 17:14:29 GMT
On 5/10/05, Bart Simpson <batttmannn1976@yahoo.com> wrote:
> 
> --- Rick <rapichai@gmail.com> wrote:
> > I'm having problems with
> > MasonX::Request::WithApacheSession (using
> > Apache::Session::MySQL backend). The session is not
> > being updated, so
> > I can't save any data to it. I verified this by
> > looking at the mysql
> > logs.
> 
> Are you timestamping your session each time you
> updated it?  it only updates if you change someting in
> top level of session hash, thus usually you timestamp
> the session in top level when updating it.
> 
> $session->{hash}->{key} = $new_val ; # won't cause
> update
> 
> $session->{hash} = { key => $new_val }; # causes
> update cause hash address changed in top level.
> 
> See docs Apache::Session docs for details about this.
> Other than this I've never had this problem. Don't use
> mason though.

Interesting, it appears that the only API to the
MasonX::Request::WithApacheSession is through the mason request object
(global $m). In order to test what you have recommended, I created a
session using purely the Apache::Session::MySQL class. I did this by
creating a seperate "set.html" mason/html file which creates a new
session and sets some session values. The code is below:

-------------------BEGIN MASON CODE FOR
"set.html"-------------------------------------------------

<%perl>
        my %session;
        tie %session, 'Apache::Session::MySQL', undef, {
                Handle     => $DBH,
                LockHandle => $DBH
        };
</%perl>

        <h3>Setting some of the session keys<h3>
<%perl>
        $session{'car'} = {
                make => 'BMW',
                year => '2005',
                model => 'M3',
                color => 'Interlagos Blue'
        };

        $session{'user'} = $USEROBJECT;
</%perl>

        <h3>Dumping contents of %session <% $session{_session_id} %></h3>
% for my $key (keys %session) {
        <h3><% $key %> = <% $session{$key} %></h3>
% }

<h3><a href="dump.html?id=<% $session{_session_id} %>">dump.html</a></h3>

-------------------END MASON CODE FOR
"set.html"-------------------------------------------------

By viewing this page, the session key/values show up correctly in the
HTML output. However, when I click the link to go to the dump.html
page, nothing was saved. Below is the output for the dump.html page.

-------------------BEGIN MASON CODE FOR
"dump.html"-------------------------------------------------
<%args>
        $id
</%args>
<%perl>
        my %session;
        tie %session, 'Apache::Session::MySQL', $id, {
                Handle     => $DBH,
                LockHandle => $DBH
        };
</%perl>

        <h3>DUMPING Session from %session</h3>
% for my $key (sort keys %session) {
        <h3><% $key %> = <% $session{$key} %></h3>
% }

<h3><a href="set.html">set.html</a></h3>

-------------------END MASON CODE FOR
"dump.html"-------------------------------------------------

On this page, the only key/value pair is: _session_id => [MD5sessionidgoeshere]

I checked the MySQL logs and there were only 3 calls to it:

2005 Query       SELECT
GET_LOCK('Apache-Session-f050450049018ff9d77c9e4697700b5f', 3600)
2005 Query       INSERT INTO sessions (id, a_session) VALUES
('f050450049018ff9d77c9e4697700b5f','\0\0\0\n
f050450049018ff9d77c9e4697700b5f\0\0\0
                                      _session_id')
2005 Query       SELECT
RELEASE_LOCK('Apache-Session-f050450049018ff9d77c9e4697700b5f')

No UPDATE statements even though I'm changing things in the top level hash.

Any ideas?

Rick

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