Nested list in Yii2

Question

How to create a nested lists in Yii2? Not a menu lists. I followed Yii2 docs.

So, in params.php in config directory I have an array. The code is like this:

<?php
return [
'version' => 'framework: ' . Yii::getVersion() . ' version: ' . '0.0.0',
'description' => [
    'app' => [
        'PT. ABC' => [
            'feature' => [
                'Request IT-06',
                'PEB'
            ],
            'bug' => [
                'No Bug'
            ],
            'changelog' => [
                'Initialize Program'
            ]
        ],
        'PT. XYZ' => [
            'feature' => [
                'Request IT-06',
                'PEB'
            ],
            'bug' => [
                'No Bug'
            ],
            'changelog' => [
                'Initialize Program'
            ]
        ],
    ],
],
];

I want to make a nested lists. I just know to display the index of array like this:

-PT. ABC
-PT. XYZ

This is my code:

<div class="col-lg-8">
    <div class="panel panel-default">
        <div class="panel-heading">
            <h3 class="panel-title">Welcome to <?= Yii::$app->params['version'] ?></h3>
        </div>
        <div class="panel-body">
            <?= Html::ul(Yii::$app->params['description']['app'], [
                'item' => function ($item, $index) {
                    return Html::tag(
                        'li',
                        $index,
                        ['class' => 'post']
                    );
                }
            ]) ?>
        </div>
    </div>
</div>

I need Like this,for example,

-PT. ABC
  * feature
     - feature 1
  * bug
  * changelog
-PT. XYZ
  * feature
  * bug
  * changelog

you can do using for loop

Peerbits - Backend Team
– Peerbits - Backend Team

2018-04-10 05:11:37 +00:00
Commented Apr 10, 2018 at 5:11 — Peerbits - Backend Team
– Peerbits - Backend Team, Commented Apr 10, 2018 at 5:11

rob006 · Accepted Answer · 2018-04-13 19:16:17Z

1

You need a recurrency for this. Create your own Html helper with method for that:

public static function nestedUl($items) {
    return Html::ul($items, [
        'encode' => false,
        'item' => function ($item, $index) {
            if (is_array($item)) {
                $content = Html::encode($index) . Html::nestedUl($item);
            } else {
                $content = Html::encode($item);
            }

            return Html::tag(
                'li',
                $content,
                ['class' => 'post']
            );
        }
    ]);
}

It will generate nested list for each array.

answered Apr 13, 2018 at 19:16

rob006

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