Refresh Issue in XMLDataSet with IE

Question

I'm running into this issue on Internet Explorer 6, not on
Firefox or Safari. I'm basically using the Product Table Example
app, and use the XMLDataSet object pointing to a PHP page called
getOrders.php that returns the XML dynamically, based on mySQL
queries. Whenever I make changes to the records, the XMLDataSet
doesn't load a fresh copy of th PHP file thus not reflecting the
changes in the display page. Even if I use the usecache: false
option or define a reload interval, it is not refreshing the page.
So I went ahead and directly opened the .php file in the browser
and it returns the XML displayed in the browser... and it is the
outdated content. So I'll have to ctrl-click Refresh in order to
force download fresh content and then it seems to update itself.
Again, this is on IE browser only (6.0 <), not on Firefox, not
on Safari...
Anyone out there that ran into the same / similar issue?
Thanks for your help, much appreciated!
-ralf

Answer 1

Thanks for the hint. I have tried to insert the meta tags,
but it didn't work for me, unfortunately. Now, what I found out is,
that this only happens if the HTTPRequest Object opens a URL that
is named always the same. So, If I were to change something in the
URL every time, it would basically be a new URL and IE has to load
it, because it's brand new, and the cache could serve no purpose.
The way I did this is by adding a parameter that changes all the
time: a random number.
the line in my source code:
var dsOrders = new Spry.Data.XMLDataSet("
http://www.my-domain.com/my-subdir/loadOrders.php",
"/my-results", { useCache: false, loadInterval: 60000 });
has been altered to include the current timestamp:
var rightnow = new Date();
var var_random = rightnow.toGMTString();
var dsOrders = new Spry.Data.XMLDataSet("
http://www.my-domain.com/my-subdir/loadOrders.php?random="+var_random,
"/response/result/orders/order", { useCache: false, loadInterval:
60000 });
This worked for me. Thanks for the hint though, it opened my
mindset to come up with this solution.
thx,
-ralf