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idfunction 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>
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