[wp-hackers] get_user_meta cached

[Simon Blackbourn]

Are you running APC on your server? I had the same issue (affecting options
as well as meta data) which turned out to be caused by an old version of
APC [1]. After updating to a newer version (using PECL) the issue went away.

[1]
http://wordpress.org/support/topic/plugin-apc-object-cache-backend-changes-to-options-pages-not-showing


On 27 March 2013 18:51, Matthias Breuer <mail at matthiasbreuer.com> wrote:

> Hi,
>
> upon calling update_user_meta, which is calling the underlying
> update_metadata function, the cache for that item gets deleted
> (wp_cache_delete($object_id, $meta_type . '_meta'); L. 156 in
> wp-includes/meta.php).
>
> Could it be that you are referencing the user meta in your code before the
> POST request is handled, this would explain how you get an outdated (not
> yet updated) value. If this is not the case, check try the clean_user_cache
> function, you can pass a user ID, or an WP_User object.
>
> Normally what i do in a situation like this, and what i think is good
> practice, is to redirect the user after the POST request is handled to the
> same page with wp_redirect. This is good, because it clears all POST data
> and doesn't give an annoying message when the user accidentally or
> intentionally hits reload (also see
> http://en.wikipedia.org/wiki/Post/Redirect/Get).
>
> I don't know where exactly you handle the POST request, but doing it on
> init or a different appropriate action can reduce the load time and handles
> the redirect early enough to be sent with the headers.
>
> I hope this helps! Feel free to ask further questions if anything is
> unclear or you need more direct pointers.
>
> Best,
> Matthias
>
>
> Am 27.03.2013 um 19:11 schrieb Joaquin Rodriguez Montero <
> yojoaquin at gmail.com>:
>
> > He guys, quick one: I'm updating / adding a user meta field via a form
> > through POST. It adds / update the data. But when the page refreshes I
> get
> > an old value. How can I avoid that? I guess is because the value was
> > cached.. but when I refresh the page again I get the new value.. could
> > anyone help me please? I'd like to see the new value immediately after
> the
> > form is sent and the page has refreshed because of this.
> >
> > On my functions I've got:
> >
> > function chocks_adds_mark($userid, $workid) {
> >
> >     $meta_key = "work_id_".$workid;
> >
> >     if(!empty($_POST['myMark'])) {
> >
> >     $mark = $_POST['myMark'];
> >
> >     update_user_meta("$userid","$meta_key", "$mark");
> >
> >     }
> >
> > }
> >
> > And my form on single-attachment is:
> >
> > <form name="marksform" method="post" action="<?php calificar($userid,
> > $workid); ?>" >
> >
> >   <label>Calificación: </label>
> >
> >   <input type="text" name="myMark" value="<?php
> if(!empty($calificacion_nota))
> > : echo $calificacion_nota; endif; ?>" /><br />
> >
> >   <?php wp_nonce_field('marksform'); ?>
> >
> >   <input type="submit" name="enviar" value="Calificar"/>
> >
> >   </form>
> >
> > Thanks!
> > _______________________________________________
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>
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