php 如何在 smarty 模板中访问数组的键和值？
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How to access key and value of an array in smarty template?
提问by PHPLover
I'm assigning an array named $enquiries_labelsfrom php file to a smarty template file. If I print the array in PHP file it's output is as follows:
我正在将一个$enquiries_labels从 php 文件命名的数组分配给一个 smarty 模板文件。如果我在 PHP 文件中打印数组，它的输出如下：
Array
(
[0] => New Enquiry
[1] => Retail Enquiry
[2] => Feedback
[3] => Payment Query
[4] => Package Query
[5] => Test Query
)
Now after assigning this array to a smarty file I want to access these values in a select HTML control. For it I need to use foreach loop construct of smarty template engine. If a pre-selected value is matching with the key from array then I'll keep that value selected. For achieving this I tried below code, but it didn't work for me. Can anyone help me in this regard please? For your reference I'm putting below the code I tried in smarty template:
现在，在将此数组分配给 smarty 文件后，我想在选择的 HTML 控件中访问这些值。为此，我需要使用 smarty 模板引擎的 foreach 循环构造。如果预先选择的值与数组中的键匹配，那么我将保持选择该值。为了实现这一点，我尝试了下面的代码，但它对我不起作用。任何人都可以在这方面帮助我吗？供您参考，我将在 smarty 模板中尝试的代码放在下面：
<select name="contact_label" id="contact_label">
{if $enquiries_labels}
{foreach from=$enquiries_labels item=label}
<option value="{$label.key}" {if $data.key == $label.key} selected="selected" {/if}>{$label.value}
</option>
{/foreach}
{/if}
</select>
Thanks for spending some of your valuable time in understanding my issue.
感谢您花费一些宝贵的时间来了解我的问题。
回答by Bart Friederichs
Use keyin your foreach:
使用key您的foreach：
{foreach from=$enquiries_labels item=label key=key}
<option value="{$key}" {if $data.key == $key} selected="selected" {/if}>{$label}
</option>
{/foreach}
It's all there in the documentation.
这一切都在文档中。
回答by SerzN1
Smarty 3 foreach construction is like this
Smarty 3 foreach 构造是这样的
{foreach $products as $p}
{$p@key}: {$p}
{/foreach}
回答by Rico Sonntag
Use the keyattribute.
使用key属性。
{foreach from=$enquiries_labels item="label" key="key"}
<option value="{$key}"{if $data.key == $key} selected="selected"{/if}>{$label}</option>
{/foreach}
回答by Alp Altunel
this also works
这也有效
{foreach $products as $product}
key: {$product@key} -> value: {$product@value}
{/foreach}
{$product@value} = {$product}
