Refresh Problem

Victor Subervi victorsubervi at
Mon Apr 12 09:03:05 EDT 2010

On Sun, Apr 11, 2010 at 4:29 PM, Tim Chase <python.list at>wrote:

> On 04/11/2010 02:53 PM, MRAB wrote:
>> Victor Subervi wrote:
>>> Hi;
>>> I send variables to a script. The script adds appropriate lines into a
>>> database of an order to my shopping cart. When I refresh the screen, as
>>> no doubt some customers will do, it re-ads those orders. Now, I can
>>> delete them, but that's not the point. I don't want it to re-ad the
>>> orders. How do I skirt this problem?
>>>  When you click on the Submit button on the form it should post the data,
>> ie use method="post", not method="get". If refreshing causes it to
>> re-submit, then you're using the wrong method. This is basic stuff.
> And if you do POST your data (which you should if you're attempting to
> change state on the server), you should use a post/redirect/get pattern[1].
>  This will prevent the browser from giving the "you've already submitted
> this data; do you want to resubmit it?" message that most should give you if
> you refresh a POST'ed page.
> And therein demonstrates the need to know HTTP as mentioned in my previous
> reply to you (VS, not MRAB).

Man, I just forget this stuff. Dunno why. Yeah, just set a var in the URL of
the post. Right. Sorry. Thanks.
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