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the "page 2 shows up on top of page 1 when you wake up in the morning" bug. See the comments.

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This commit is contained in:
friendica 2014-07-21 21:15:03 -07:00
parent 27908d944d
commit 68b7dc48bb
2 changed files with 18 additions and 1 deletions
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17
mod/network.php
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@ -315,6 +315,21 @@ function network_content(&$a, $update = 0, $load = false) {
} }
$simple_update = (($update) ? " and ( item.item_flags & " . intval(ITEM_UNSEEN) . " ) " : ''); $simple_update = (($update) ? " and ( item.item_flags & " . intval(ITEM_UNSEEN) . " ) " : '');
// This fixes a very subtle bug so I'd better explain it. You wake up in the morning or return after a day
// or three and look at your matrix page - after opening up your browser. The first page loads just as it
// should. All of a sudden a few seconds later, page 2 will get inserted at the beginning of the page
// (before the page 1 content). The update code is actually doing just what it's supposed
// to, it's fetching posts that have the ITEM_UNSEEN bit set. But the reason that page 2 content is being
// returned in an UPDATE is because you hadn't gotten that far yet - you're still on page 1 and everything
// that we loaded for page 1 is now marked as seen. But the stuff on page 2 hasn't been. So... it's being
// treated as "new fresh" content because it is unseen. We need to distinguish it somehow from content
// which "arrived as you were reading page 1". We're going to do this
// by storing in your session the current UTC time whenever you LOAD a network page, and only UPDATE items
// which are both ITEM_UNSEEN and have "changed" since that time. Cross fingers...
if($update && $_SESSION['loadtime'])
$simple_update .= " and item.changed > " . datetime_convert('UTC','UTC',$_SESSION['loadtime']);
if($load) if($load)
$simple_update = ''; $simple_update = '';
@ -345,6 +360,8 @@ function network_content(&$a, $update = 0, $load = false) {
if($load) { if($load) {
$_SESSION['loadtime'] = datetime_convert();
// Fetch a page full of parent items for this page // Fetch a page full of parent items for this page
$r = q("SELECT distinct item.id AS item_id FROM item $r = q("SELECT distinct item.id AS item_id FROM item

2
version.inc
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@ -1 +1 @@
2014-07-20.742 2014-07-21.743