[support] cached content even if in !$may_cache section (drupal 5)

[Ivan Sergio Borgonovo]

On Sun, 19 Apr 2009 14:02:54 +0000
Earnie Boyd <earnie at users.sourceforge.net> wrote:

> Quoting Ivan Sergio Borgonovo <mail at webthatworks.it>:
> 
> > I've a
> >
> > if(!$may_cache) {
> >   $item[] = array(
> >     'path' => 'some/path',
> >     'callback' => 'somefunction',
> >   );
> > }
> >
> > function somefunction() {
> >   $result=db_query("...");
> >   ...
> >   $output.=$somedynamicstuff;
> >   return $output;
> > }
> >
> > but the result get cached anyway.
> >
> > Cache is set to normal.
> >
> > What could it be?
> >

> Could the problem be your assumption that the $may_cache in the  
> hook_menu affects the form?  Or am I missing your question?

This is D5. And yeah even if the snippet didn't use a *form* there
is a form involved in the real case.

So let's make the snippet more complete and add the steps to
reproduce the problem.

/* hook_menu */
if(!$may_cache) {
  $item[] = array(
    'path' => 'some/path1',
    'callback' => 'stuffthatchangedb',
  );
  $item[] = array(
    'path' => 'some/path2',
    'callback' => 'drupal_get_form',
    'callback arguments' => array('stuffthatdependsondb'),
  );
}

function stuffthatchangedb() {
  db_query('insert values(someid, somefield) values(default, 97);
  drupal_goto('some/path2');
}

function stuffthatdependsondb() {
  $result = db_query("select someid, somefield from table1;");
  while($row = db_fetch_array($result)) {
    $form['something'][$row['someid']] = array(
      '#type' => 'textfield',
      '#default_value" => $row['somefield'],
    );
  }
  return $form;
}

I visit some/path1.
some/path1 add a record to table1
I get redirected to some/path2.
I visit once more some/path1
some/path1 add a record to table1
some/path2 still show the content of the first time I visited it.

Real code is even more complicated...
stuffthatchangedb is actually another form but suffice to say... I
know it is doing it's duty and records get added to "table1", so my
expectation is I'd see them in stuffthatdependsondb form, since
drupal_get_form is called from the !$may_cache part of the menu hook.

If I disable the cache I don't incur in this problem.

Still I'd expect that stuff generated in the !$may_cache section of
the menu don't get cached.

-- 
Ivan Sergio Borgonovo
http://www.webthatworks.it