Usage of volist tag in Thinkphp

This article mainly introduces the usage of volist tag in Thinkphp. It has certain reference value. Now I share it with everyone. Friends in need can refer to it.

Usually the volist tag is mostly used to query data sets ( select method), usually the result returned by the model's select method is a two-dimensional array, which can be output directly using the volist tag.

First assign a value to the template in the controller, as shown in the following example:

$User = M('User');
$list = $User->limit(10)->select();
$this->assign('list',$list);

In the template definition as follows, loop out the user's number and Name:

<volist name="list" id="vo">
{$vo.id}:{$vo.name}<br/>
</volist>

The name attribute of the Volist tag represents the variable name assigned by the template, so it cannot be changed at will in the template file. id represents the current loop variable, which can be specified at will, but you need to ensure that it does not conflict with the name attribute. For example:

<volist name="list" id="data">
{$data.id}:{$data.name}<br/>
</volist>

supports outputting part of the data in the query results. For example, output the 5th to 15th records:

<volist name="list" id="vo" offset="5" length=&#39;10&#39;>
{$vo.name}
</volist>

Output the even numbered records:

<volist name="list" id="vo" mod="2" >
<eq name="mod" value="1">
{$vo.name}
</eq>
</volist>

Mod attribute is also used to control the line wrapping of certain records, for example:

<volist name="list" id="vo" mod="5" >
{$vo.name}
<eq name="mod" value="4"><br/></eq>
</volist>

When it is empty, the output prompt is:

<volist name="list" id="vo" empty="暂时没有数据" >
{$vo.id}|{$vo.name}
</volist>

empty attribute does not support direct html syntax, but can support variable output, for example:

$this->assign(&#39;empty&#39;,&#39;<span class="empty">没有数据</span>&#39;);
$this->assign(&#39;list&#39;,$list);

Then in Used in the template:

<volist name="list" id="vo" empty="$empty" >
{$vo.id}|{$vo.name}
</volist>

Output loop variable:

<volist name="list" id="vo" key="k" >
{$k}.{$vo.name}
</volist>

If key is not specified For attributes, the loop variable i is used by default, for example:

<volist name="list" id="vo" >
{$i}.{$vo.name}
</volist>

If you want to output the index of the array, you can use the key variable directly. Different from the loop variable, This key is determined by the data itself, rather than controlled by the loop. For example:

<volist name="list" id="vo" >
{$key}.{$vo.name}
</volist>

You can directly use the function to set the data set in the template without the need to Assign values ​​to template variables in the controller and pass in data set variables, such as:

<volist name=":fun(&#39;arg&#39;)" id="vo">
{$vo.name}
</volist>

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