ecshop导航栏自动显示三级或多级子栏目,多级频道分类,并实现css高亮显示
ecshop导航要达到的目标:
一,比如上图,当我访问三级分类,响应式布局,这个栏目时,最顶级的元件这个分类,要高亮显示
二,如果导航上面有商品或文章频道, 并且他们有子栏目,则全自动显示所有的子栏目.
三,如果这个导航有子分类,则统一显示下拉三角标志.
代码如下
一,在includes/lib_main.php 文件中,修改掉或另外重命名并重定义一个这个get_navigator()函数,修改后的内容如下,另外get_categories_tree()这个函数为系统自带的在lib_goods.php中
/**
* 取得自定义导航栏列表
* @param string $type 位置，如top、bottom、middle
* @return array 列表
*/
function get_navigator($ctype = '', $catlist = array())
{
$sql = 'SELECT * FROM '. $GLOBALS['ecs']->table('nav') . '
WHERE ifshow = \'1\' ORDER BY vieworder';
$res = $GLOBALS['db']->query($sql);
$cur_url = substr(strrchr($_SERVER['REQUEST_URI'],'/'),1);
if (intval($GLOBALS['_CFG']['rewrite']))
{
if(strpos($cur_url, '-'))
{
preg_match('/([a-z]*)-([0-9]*)/',$cur_url,$matches);
$cur_url = $matches[1].'.php?id='.$matches[2];
}
}
else
{
$cur_url = substr(strrchr($_SERVER['REQUEST_URI'],'/'),1);
}
$noindex = false;
$active = 0;
$has_suv=0;
$navlist = array(
'top' => array(),
'middle' => array(),
'bottom' => array()
);
while ($row = $GLOBALS['db']->fetchRow($res)){
if($row['ctype']=='a'){//如果是文章类的栏目
$row3=get_article_tree_for_nav($row['cid']);//列出所有子文章分类
$navlist[$row['type']][] = array(
'name' => $row['name'],
'opennew' => $row['opennew'],
'url' => $row['url'],
'ctype' => $row['ctype'],
'cid' => $row['cid'],
'has_suv' => 1,//文章类用1
'sub_nav' => $row3,
);
}elseif($row['ctype']=='c'){//商品类的栏目
$row4=get_categories_tree($row['cid']);//使用系统默认的函数即可.商品子类
$navlist[$row['type']][] = array(
'name' => $row['name'],
'opennew' => $row['opennew'],
'url' => $row['url'],
'ctype' => $row['ctype'],
'cid' => $row['cid'],
'has_suv' => 2,//与文章的导航做区分
'sub_nav' => $row4,
);
}else{
$navlist[$row['type']][] = array(//单页面等栏目,比如about.php等
'name' => $row['name'],
'opennew' => $row['opennew'],
'url' => $row['url'],
'ctype' => $row['ctype'],
'cid' => $row['cid']
);
}
}
/*遍历自定义是否存在currentPage*/
foreach($navlist['middle'] as $k=>$v){
$condition = empty($ctype) ? (strpos($cur_url, $v['url']) === 0) : (strpos($cur_url, $v['url']) === 0 && strlen($cur_url) == strlen($v['url']));//单页,如about.php等,$ctype的值没有被传入
//当前网址与数据库中循环出的网址相同
if ($condition)//如果相同
{
$navlist['middle'][$k]['active'] = 1;//是否为当前页,追加到数组中
$noindex = true;//非首页
}
}
if(!empty($ctype))//文章或商品页面.在其控制器上传入了本栏目的类型,商品类,用c表示,或文章类,用a表示
{
//print_r($catlist);exit;即当前访问分类id
foreach($catlist as $key => $val){
$parent_arr=get_top_cat_id_arr($val,$ctype);//当前被访问的分类id的所有父栏目组成的数组
//print_r($parent_arr);exit;
foreach($navlist['middle'] as $k=>$v)
{
if(!empty($v['ctype']) && $v['ctype'] == $ctype && ($v['cid'] == $val ||in_array($v['cid'],$parent_arr)))
{//in_array($v['cid'],$parent_arr),这句表示,如果本导航条上显示的频道id,包含在了当前访问的栏目的所有父栏目id数组中,则本导航条可高亮显示
$navlist['middle'][$k]['active'] = 1;//高亮关键字
$noindex = true;
}
}
}
}
if ($noindex == false) {
$navlist['config']['index'] = 1;
}
//print_r($navlist);exit;
return $navlist;
}
二,同样在includes/lib_main.php 文件中,增加以下函数
/**
* 获得指定分类同级的所有分类以及该分类下的子分类
*
* @access public
* @param integer $cat_id 分类编号
* @return array
*/
function get_article_tree($cat_id = 0){
if ($cat_id > 0)//$cat_id当前分类
{
$parent_id=get_top_art_cat_id($cat_id);
}
else
{
$parent_id = 0;
}
/*
判断当前分类中,是否是底级分类，
如果是取出底级分类上级分类，
如果不是取当前分类及其下的子分类v
*/
$sql = 'SELECT count(*) FROM ' . $GLOBALS['ecs']->table('article_cat') . " WHERE parent_id = '$parent_id'";//
if ($GLOBALS['db']->getOne($sql)|| $parent_id == 0){
/* 如果当前分类有子分类,获取当前分类及其子分类 */
//$sql = 'SELECT cat_id, cat_name, sort_order FROM ' . $GLOBALS['ecs']->table('article_cat') ."WHERE cat_type=1 and cat_id = '$parent_id' ORDER BY sort_order ASC, cat_id ASC";//包含顶级本身,国内新闻
$sql = 'SELECT cat_id, cat_name, sort_order FROM ' . $GLOBALS['ecs']->table('article_cat') ."WHERE cat_type=1 and parent_id = '$parent_id' ORDER BY sort_order ASC, cat_id ASC";//除排顶级分类,只显示山东新闻,江苏新闻及子分类
//两种方式,这里得到的$row['cat_id']都是目标catid,即需要高亮显示的
$res = $GLOBALS['db']->getAll($sql);
$cat_arr = array();
foreach ($res AS $row)
{
$cat_arr[$row['cat_id']]['id'] = $row['cat_id'];
$cat_arr[$row['cat_id']]['name'] = $row['cat_name'];
$cat_arr[$row['cat_id']]['url'] = build_uri('article_cat', array('acid' => $row['cat_id']), $row['cat_name']);
$parent_id2=get_top_art_cat_id($row['cat_id']);//得到最顶级父栏目id
if ($parent_id2>0)
{
$cat_arr[$row['cat_id']]['cat_id'] =get_article_tree_child($row['cat_id'],$cat_id);//第二个参数.传入浏览器的当前页面分类号
$cat_id2=get_one_child_cat($row['cat_id']);
$cat_arr[$row['cat_id']]['active']=$cat_arr[$row['cat_id']]['cat_id'][$cat_id2]['active'];//如果本栏目的其中任何一级子栏目是当前访问的栏目,则本栏目的所有父栏目 active=1,即可以高亮显示.
}
}
}
//print_r($cat_arr);exit;
return $cat_arr;
}
function get_article_tree_child($tree_id = 0,$cat_id){
$three_arr = array();
$sql = 'SELECT count(*) FROM ' . $GLOBALS['ecs']->table('article_cat') . ' WHERE parent_id = '.$tree_id;
if ($GLOBALS['db']->getOne($sql) || $tree_id == 0)
{
$child_sql = 'SELECT cat_id, cat_name, parent_id' .
' FROM ' . $GLOBALS['ecs']->table('article_cat') .
"WHERE parent_id = '$tree_id' ORDER BY sort_order ASC, cat_id ASC";
$res = $GLOBALS['db']->getAll($child_sql);
foreach ($res AS $row)
{
$cat_cur=$cat_loop=array();
$active=0;
$cat_cur=get_top_cat_id_arr($cat_id,'a');//当前访问的栏目的所有上级栏目id,所组成的数组
array_pop($cat_cur);//去除最顶级的栏目,防止干扰高亮
$cat_loop=get_top_cat_id_arr($row['cat_id'],'a');//循环时,本栏目的所有上级栏目id,所组成的数组
array_pop($cat_loop);//去除最顶级栏目id
if(count(array_intersect($cat_cur,$cat_loop))>0){
//如果当前访问的栏目的父栏目数组与循环栏目得到的父栏目数组,有交集,
//则访问的栏目与其所有父栏目都是$active=1;方便前台高亮
$active=1;
}
$three_arr[$row['cat_id']]['active'] = $active;
$three_arr[$row['cat_id']]['id'] = $row['cat_id'];
$three_arr[$row['cat_id']]['name'] = $row['cat_name'];
$three_arr[$row['cat_id']]['url'] = build_uri('article_cat', array('acid' => $row['cat_id']), $row['cat_name']);
if (isset($row['cat_id']) != NULL)
{
$three_arr[$row['cat_id']]['cat_id'] = get_article_tree_child($row['cat_id'],$cat_id);
}
}
}
return $three_arr;
}
//得到其最上级分类的id
function get_top_art_cat_id( $nid ){
$sql = "select parent_id from ".$GLOBALS['ecs']->table( "article_cat" )." where cat_id = ".$nid."";
$temp_id = 0;
$pid = $GLOBALS['db']->getOne( $sql );
if ( 0 < $pid )
{
$temp_id = get_top_art_cat_id( $pid );
return $temp_id;
}
$temp_id = $nid;
return $temp_id;
}
//本文章或商品--分类对应的所有上级分类的数组
function get_top_cat_id_arr( $nid ,$ctype='c'){
if($ctype=='c'){$table=$GLOBALS['ecs']->table( "category" );}else{$table=$GLOBALS['ecs']->table( "article_cat" );}
$sql = "select parent_id from ".$table." where cat_id = ".$nid."";
$temp_id = 0;
$temp_arr=array();
$pid = $GLOBALS['db']->getOne( $sql );
if ( $pid==0 )
{
return $temp_arr;
}else{
$temp_arr[]=$pid ;
$sql2 = "select parent_id from ".$table." where cat_id = ".$pid."";
$pid2 = $GLOBALS['db']->getOne( $sql2 );
if($pid2==0){
return $temp_arr;
}else{
$temp_arr[]=$pid2 ;
$sql3 = "select parent_id from ".$table." where cat_id = ".$pid2."";
$pid3 = $GLOBALS['db']->getOne( $sql3 );
if($pid3==0){
return $temp_arr;
}else{
$temp_arr[]=$pid3 ;
$sql4 = "select parent_id from ".$table." where cat_id = ".$pid3."";
$pid4 = $GLOBALS['db']->getOne( $sql4 );
if($pid4==0){
return $temp_arr;
}else{
$temp_arr[]=$pid4;
$sql5 = "select parent_id from ".$table." where cat_id = ".$pid4."";
$pid5 = $GLOBALS['db']->getOne( $sql5 );
if($pid5==0){
return $temp_arr;
}else{
$temp_arr[]=$pid5;
$sql6 = "select parent_id from ".$table." where cat_id = ".$pid5."";
$pid6 = $GLOBALS['db']->getOne( $sql6 );
if($pid6==0){
return $temp_arr;
}else{
$temp_arr[]=$pid6;
return $temp_arr;
}}}}}}}
三,相应header模板中增加示例代码,具体可自己修改,如果要增加层级,在模板上继续嵌套即可.同时后面的这个函数也可以增加层级function get_top_cat_id_arr()
<ul id="nav2" class="nav2 clearfix">
<li class="nLi {if $navigator_list.config.index eq 1}on{/if}"> <a href="index.php"><span class="text">后易首页</span></a> </li>
<!-- {foreach name=nav_middle_list from=$navigator_list.middle item=nav} -->
<li class="nLi {if $nav.active eq 1}on{/if}"> <a href="{$nav.url}" {if $nav.opennew eq 1}target="_blank" {/if}>{$nav.name} {if $nav.has_suv gt 0}<span class="arrow"></span>{/if}</a>
{if $nav.has_suv eq 1}
<ul class="sub">
<!-- {foreach name=sub_nav from=$nav.sub_nav item=child} -->
<li><a href="{$child.url}">{$child.name}</a>
<ul class="sub">
<!--{foreach from=$child.cat_id item=child1 }-->
<li><a href="{$child1.url}">----{$child1.name}</a>
<ul class="sub">
<!-- {foreach name=sub_nav from=$child1.cat_id item=child2} -->
<li><a href="{$child2.url}">========{$child2.name}</a></li>
<!-- {/foreach} -->
</ul>
</li>
<!-- {/foreach} -->
</ul>
</li>
<!-- {/foreach} -->
</ul>
{/if}
{if $nav.has_suv eq 2}
<ul class="sub">
<!-- {foreach name=sub_nav from=$nav.sub_nav item=child} -->
<li><a href="{$child.url}">{$child.name}</a>
<ul class="sub">
<!--{foreach from=$child.cat_id item=child1 }-->
<li><a href="{$child1.url}">----{$child1.name}</a>
<ul class="sub">
<!-- {foreach name=sub_nav from=$child1.cat_id item=child2} -->
<li><a href="{$child2.url}">========{$child2.name}</a></li>
<!-- {/foreach} -->
</ul>
</li>
<!-- {/foreach} -->
</ul>
</li>
<!-- {/foreach} -->
</ul>
{/if}
</li><!-- {/foreach} -->
</ul>