简单的说,就是每隔一段时间(自己设定的数据缓存时间),即使没有新帖子,这个diy模块所调用的帖子也会变。
方式:加个选项,然后查询数据的时候把这个选项作为一个条件,选它就按它来调用。
具体操作:
1.打开/source/class/block/forum/block_threadhot.php,找到
array('recommends', 'threadlist_orderby_recommends'),
之下增加
array('rands', '随机'),
2.打开/source/class/block/forum/block_thread.php,找到
$orderby = isset($parameter['orderby']) ? (in_array($parameter['orderby'],array('lastpost','dateline','replies','views','heats','recommends')) ? $parameter['orderby'] : 'lastpost') : 'lastpost'; $lastposter = !empty($parameter['lastposter']) ? $parameter['lastposter'] : '';
改为
$orderby = isset($parameter['orderby']) ? (in_array($parameter['orderby'],array('lastpost','dateline','replies','views','heats','recommends','rands')) ? $parameter['orderby'] : 'lastpost') : 'lastpost'; $lastposter = !empty($parameter['lastposter']) ? $parameter['lastposter'] : '';
3.找到
$query = DB::query("SELECT DISTINCT t.*$sqlfield FROM `".DB::table('forum_thread')."` t $sqlfrom WHERE {$maxwhere}t.readperm='0' $sql AND t.displayorder>='0' ORDER BY t.$orderby DESC LIMIT $startrow,$items;" );
改为
if($orderby=='rands'){ $query = DB::query("SELECT DISTINCT t.* $sqlfield FROM `".DB::table('forum_thread')."` t $sqlfrom WHERE {$maxwhere}t.readperm='0' $sql AND t.displayorder>='0' ORDER BY rand() LIMIT $startrow,$items;"); }else{ $query = DB::query("SELECT DISTINCT t.*$sqlfield FROM `".DB::table('forum_thread')."` t $sqlfrom WHERE {$maxwhere}t.readperm='0' $sql AND t.displayorder>='0' ORDER BY t.$orderby DESC LIMIT $startrow,$items;" ); }
就是在数据查询的外层加上了判断,如果是随机排序,查询里排序条件就用ORDER BY rand(),否则按原本的排序条件。