Question

我编写了自己的CMS解决方案，我一直遇到更改页面顺序的问题。在我的数据库中，我有一个名为order的列，它获取页面的自动id。例如，如果pageid = 16则order = 16。

function shift_page_up($pageid, $pageorder, $db, $database_db){

    mysql_select_db($database_db, $db);
    $sql_previouspage = "SELECT order from pages WHERE `order` < $pageorder ORDER by `order` DESC LIMIT 1  ";
    $previouspage_result = mysql_query($sql_previouspage) or display_error(mysql_error());
    $previouspage_row = mysql_fetch_assoc($previouspage_result);

    $newpreviouspage_pageorder = $pageorder;

    $newpageorder = $previouspage_row['order'];

    $sql_update_currentpageorder = "UPDATE pages SET `order` = $newpageorder WHERE `pageid` = $pageid";

    $update_currentpageorder = mysql_query($sql_update_currentpageorder) or display_error(mysql_error());

    $sql_update_previouspageorder = "UPDATE pages SET `order` = $newpreviouspage_pageorder WHERE `pageid` = ".$previouspage_row['pageid']."";
    $update_previouspageorder = mysql_query($sql_update_previouspageorder) or display_error(mysql_error());
    }

function shift_page_down($pageid, $pageorder, $db, $database_db){
    mysql_select_db($database_db, $db);
    $sql_nextpage = "SELECT * from pages WHERE `pageid` = $pageid AND `order` > $pageorder ORDER by `order` ASC LIMIT 1 ";
    $nextpage_result = mysql_query($sql_nextpage) or display_error(mysql_error());
    $nextpage_row = mysql_fetch_assoc($nextpage_result);

    $newnextpage_pageorder = $pageorder;

    $newpageorder = $nextpage_row['order'];

    $sql_update_currentpageorder = "UPDATE pages SET `order` = $newpageorder WHERE `pageid` = $subpageid";

    $update_currentpageorder = mysql_query($sql_update_currentpageorder) or display_error(mysql_error());

    $sql_update_nexpageorder = "UPDATE pages SET `order` = $newnextpage_pageorder WHERE `pageid` = ".$nextpage_row['pageid']."";
    $update_nexpageorder = mysql_query($sql_update_nexpageorder) or display_error(mysql_error());
}

因此，主要思想是交换从自动生成的页面ID复制的ORDER列上的页面顺序。我已经编写了机制来避免分别使用SELECT MIN(order)和SELECT MAX(order)来交换具有最高和最低顺序的网页。

要更改订单，请点击锚链接<a href="order_up.php?pageid=<?php echo $row_get_pages['pageid']; ?>&pageorder=<? echo $row_get_pages['order']; ?>&swapped=<?php echo str_replace( " ", "-", $row_get_pages['pagename']); ?>"> <img onclick="bounce_page('<?php echo $row_get_pages['pagename']; ?>');" src="images/ico/arrow-090.png" width="16" height="16" align="right" style="cursor:pointer;" /></a>

要将订单向下移动，请点击锚链接<a href="order_down.php?pageid=<?php echo $row_get_pages['pageid']; ?>&pageorder=<? echo $row_get_pages['order']; ?>&swapped=<?php echo str_replace( " ", "-", $row_get_pages['pagename']); ?>"><img onclick="bounce_page('<?php echo $row_get_pages['pagename']; ?>');" src="images/ico/arrow-270.png" width="16" height="16" style="cursor:pointer;" /> </a>

这种方式很有效，特别是当页面表被截断并且页面ID从0开始时。 但是在某处删除的空表或页面总会带来问题。当我点击任何向上或向下链接时，没有交换任何值

适用于定制CMS的CMS页面排序解决方案

0 个答案: