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我是 smarty 的新手，并试图实现一个嵌套的 foreach 循环。所以我有两个表 subCategory 和 members ，其中 members 和 subCategory 可以通过 subcategory_id 连接。例如，大约有 5 个类别和大约 50 个成员属于这 5 个类别中的任何一个。我想先循环子类别，然后显示每个类别下的成员。但我无法在 smarty 中进行第二次 foreach。在普通的 php 中我可以做到，但在 smarty 中不行。请帮忙。

php代码

$result = mysqli_query($conn,"SELECT * FROM subCategory ");
$list_subchannels = array();
while ( $row = mysqli_fetch_assoc($result) )
{

        $subcategory = $row['subcat_id'];
        $result1 = mysqli_query($conn,"SELECT * FROM member JOIN subCategory ON member.subcategory_id = subCategory.subcat_id WHERE member.subcategory_id = '$subcategory' ");
        $list_subchannels = array();
        while ( $row1 = mysqli_fetch_assoc($result1) )
        {
            $list_subchannels[] = $row1;
            $smarty->assign($row1['subcat_name'],$list_subchannels);

        }


        $list_subcategories[] = $row;
        $smarty->assign("subcategory",$list_subcategories);

}

.tpl 代码是

{foreach from=$subcategory key=k item=b}
    Sub Category Names: {$b.subcat_name}

    <!-- Listing Item -->
    {foreach from=$b.subcat_name key=k item=a}
                    <h3>Member Name: {$a.channel_name}</h3>
                    <span>Member Id: {$a.member_id}</span>
    {/foreach}                
    <!-- Listing Item / End -->

{/foreach}

它正确显示了所有子类别名称（即第一个 foreach），但显示了它们下的成员。TIA

4

2 回答 2

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PHP代码：

$result = mysqli_query($conn,"SELECT * FROM subCategory ");
$list_subchannels = array();
while ( $row = mysqli_fetch_assoc($result) )
{
    $subcategory = $row['subcat_id'];
    $result1 = mysqli_query($conn,"SELECT * FROM member JOIN subCategory ON member.subcategory_id = subCategory.subcat_id WHERE member.subcategory_id = '$subcategory' ");
    $list_subchannels = array();
    while ( $row1 = mysqli_fetch_assoc($result1) )
    {
        // $list_subchannels[] = $row1; // COMMENT
        // $smarty->assign($row1['subcat_name'],$list_subchannels); // COMMENT

        $list_subchannels[$subcategory] = $row1; // HERE
    }

    $list_subcategories[] = $row;
    $smarty->assign("subcategory",$list_subcategories);
    $smarty->assign("subchannels", $list_subchannels); // HERE
}

TPL 代码：

{foreach from=$subcategory key=k item=b}
    Sub Category Names: {$b.subcat_name}

    <!-- Listing Item -->
    {foreach from=$subchannels[$b.subcat_id] key=k item=a} // HERE
                <h3>Member Name: {$a.channel_name}</h3>
                <span>Member Id: {$a.member_id}</span>
    {/foreach}                
    <!-- Listing Item / End -->

{/foreach}
于 2018-07-25T22:11:24.567 回答
-1

尝试使用 {function} {/function}。

例如：

{function name=subcategory_listing level=0}
    {foreach $subcategory as $subc}
        {if $level == 0}
            Sub Category Names: {$subc.subcat_name}
        {else}
            <h3>Member Name: {$subc.channel_name}</h3>
            <span>Member Id: {$subc.member_id}</span>
        {/if}

        {subcategory_listing cats=$subc.subcat_name level=$level+1}
    {/foreach}
 {/function}

 {subcategory_listing cats=$subcategory}
于 2018-07-25T11:10:29.600 回答