DIY记录调用只调用每个用户的最新一条记录

修改文件：
source\class\block\space\block_doing.php

搜索：$query = C::t('home_doing')->fetch_all_by_uid_doid($uids, $bannedids, $parameter['orderby'], $startrow, $items, true, true);删掉后在原位置加上：if (!empty($parameter['bannedids'])) {
      $screenid = ' where doid not in ('.$parameter['bannedids'].')';
    } else {
      $screenid = '';
    }  
    $datas = DB::fetch_all('select uid,max(dateline) as maxdateline from pre_home_doing'.$screenid.' group by uid order by maxdateline desc limit 10');
    $query = array();
    foreach($datas as $data){
     $uid = $data['uid'];
     $maxdateline = $data['maxdateline'];
     $sql = "select * from pre_home_doing where uid='{$uid}' and dateline='{$maxdateline}' limit 1";
     $record = mysql_fetch_array(mysql_query($sql),MYSQL_ASSOC);
     $query[] = $record;
    }
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