Smarty 多層目錄問題

php

chan15 2011-12-28 18:18:39 ‧ 3475 瀏覽

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這是我目前撈取上下關聯目錄的方式，不知道有沒有更好的方法

PHP 部分

// 撈取大目錄
$cate  = array();
$sqlC1 = "SELECT id, label FROM category ORDER BY id ASC";
$queryC1 = $db->myRow($sqlC1);

foreach($queryC1 as $x => $rowC1)  {
	$cate[$x]['id'] = $rowC1['id'];
	$cate[$x]['label'] = $rowC1['label'];

	// 撈取中目錄
	$sqlC2 =  sprintf("SELECT id, label FROM category WHERE parent_id = %s ORDER BY id ASC",
		$rowC1['id']);
	$queryC2 = $db->myRow($sqlC2);

	$cate[$x]['c2'] = array();
	foreach ($queryC2 as $y => $rowC2) {
		$cate[$x]['c2'][$y]['id'] = $rowC2['id'];
		$cate[$x]['c2'][$y]['label'] = $rowC2['label'];
	}
}
$smarty->assign('cate', $cate);

Template 部分

{if $cate}
{section name=data loop=$cate}
	{$cate[data].label}
	{if $cate[data].c2}
		{section name=data2 loop=$cate[data].c2}
			{$cate[data].c2[data2].label}
		{/section}
	{/if}
{/section}
{/if}

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1 個回答

wiseguy

iT邦超人 1 級 ‧ 2011-12-28 20:44:22

最佳解答

用一個 sql 就能查出你想要的結果：

&lt;pre class="c" name="code">select A.id,A.label,B.id,B.label
from category as A left join category as B
on B.parent_id=A.id
where A.parent_id is null
order by A.id,B.id

PS. 因為你 $sqlC1 沒寫 where 條件，會連第二層也抓出，所以我加上 where A.parent_id is null 來限制。假如這不是你要的效果，請自行修改。

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chan15 iT邦新手 2 級 ‧ 2011-12-28 20:48:27 檢舉

對，我漏了一個判斷，請問這樣怎麼 assign 會達到效果

wiseguy iT邦超人 1 級 ‧ 2011-12-28 21:05:14 檢舉

$cate = array();
$sqlC1 = "select A.id as pid ,A.label as plabel,B.id,B.label
from category as A left join category as B
on B.parent_id=A.id
where A.parent_id is null
order by A.id,B.id";
$queryC1 = $db->myRow($sqlC1);

foreach($queryC1 as $x => $rowC1) {
$cate[$x]['id'] = $x;
$cate[$x]['label'] = $rowC1['plabel'];
$cate[$x]['c2'][$rowC1['id']]['id'] = $rowC1['id'];
$cate[$x]['c2'][$rowC1['id']]['label'] = $rowC1['label'];
}
$smarty->assign('cate', $cate);

chan15 iT邦新手 2 級 ‧ 2011-12-29 02:09:35 檢舉

不對啊，這樣 level 1 的 label 會因為該 level 2 有多少資料就重複多少次啊

chan15 iT邦新手 2 級 ‧ 2011-12-29 02:55:56 檢舉

&lt;pre class="c" name="code">
$sql = "SELECT a.t_id AS a_id, a.t_label AS a_label, a.t_level AS a_level, b.t_id AS b_id, b.t_label AS b_label, b.t_level AS b_level, c.t_id AS c_id, c.t_label AS c_label FROM tbl_cate a LEFT JOIN tbl_cate b ON b.parent_id = a.t_id LEFT JOIN tbl_cate c ON c.parent_id = b.t_id WHERE a.t_level = 1 ORDER BY a.t_id ASC, b.t_id ASC";
$query = $chan->myRow($sql);
$cate = array();
foreach ($query as $k => $row) {
		$cate[$row['a_id']]['a_id'] = $row['a_id'];
		$cate[$row['a_id']]['a_label'] = $row['a_label'];
		$cate[$row['b_id']]['b_id'] = $row['b_id'];
		$cate[$row['b_id']]['b_label'] = $row['b_label'];
		$cate[$row['c_id']]['c_id'] = $row['c_id'];
		$cate[$row['c_id']]['c_label'] = $row['c_label'];
}
$smarty->assign('cate', $cate);
$smarty->display('cate.html')





&lt;pre class="c" name="code">	{foreach $cate as $v}
	&lt;div>{$v.a_label}&lt;/div>
	&lt;div class="level2">{$v.b_label}&lt;/div>
	&lt;div class="level3">{$v.c_label}&lt;/div>
	{/foreach