Question

我正在使用http://www.bootply.com/nZaxpxfiXz作为下拉列表。但我的数据集就像

grep -A 10 -B 10 "ABC" myfile.txt

我想构建一个包含类别和子类别的下拉列表。哪个有parent_id，那些将是一个类别的子类别。

如何使我的php数组适合这个视图？

array(
    (int) 0 => array(
        'Genre' => array(
            'id' => '1',
            'name' => 'Alternative Rock',
            'is_active' => true,
            'updated' => '2015-10-03 19:19:39',
            'parent_id' => '24'
        )
    ),
    (int) 1 => array(
        'Genre' => array(
            'id' => '2',
            'name' => 'College Rock',
            'is_active' => true,
            'updated' => '2015-10-03 19:19:45',
            'parent_id' => '24'
        )
    ),
    (int) 2 => array(
        'Genre' => array(
            'id' => '3',
            'name' => 'Experimental Rock',
            'is_active' => true,
            'updated' => '2015-10-03 19:19:50',
            'parent_id' => '24'
        )
    ),
    (int) 3 => array(
        'Genre' => array(
            'id' => '4',
            'name' => 'Goth Rock',
            'is_active' => true,
            'updated' => '2015-10-03 19:19:57',
            'parent_id' => '24'
        )
    ),
    (int) 4 => array(
        'Genre' => array(
            'id' => '5',
            'name' => 'Grunge',
            'is_active' => true,
            'updated' => '2015-01-29 17:16:15',
            'parent_id' => null
        )
    ),
    (int) 5 => array(
        'Genre' => array(
            'id' => '6',
            'name' => 'Hardcore Punk',
            'is_active' => true,
            'updated' => '2015-01-29 17:16:15',
            'parent_id' => null
        )
    ),
    (int) 6 => array(
        'Genre' => array(
            'id' => '7',
            'name' => 'Hard Rock',
            'is_active' => true,
            'updated' => '2015-01-29 17:16:15',
            'parent_id' => null
        )
    ),
    (int) 7 => array(
        'Genre' => array(
            'id' => '10',
            'name' => 'Pop',
            'is_active' => true,
            'updated' => '2015-10-03 16:38:43',
            'parent_id' => null
        )
    ),
    (int) 8 => array(
        'Genre' => array(
            'id' => '24',
            'name' => 'Rock',
            'is_active' => true,
            'updated' => '2015-10-03 19:19:32',
            'parent_id' => null
        )
    )
)

Answer 1

这应该这样做。但是您可能需要重新考虑放置getChildren函数的位置（为简单起见，我将其包含在内联中），您可能希望创建一个CakePHP视图助手类，甚至在进入视图之前在控制器中执行该逻辑。

<li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
    <ul class="dropdown-menu">
        <?php foreach ($genres as $genre) : ?>
            <?php if ($genre['Genre']['parent_id'] == null) : ?>
                <?php $children = getChildren($genres, $genre['Genre']['id']); ?>
                <li class="<?php echo empty($children) ? '' : 'dropdown dropdown-submenu'; ?>">

                    <?php $a_string = 'class="dropdown-toggle" data-toggle="dropdown"'; ?>
                    <a href="#" <?php echo empty($children) ? '' : $a_string; ?>>
                        <?php echo $genre['Genre']['name']; ?>
                    </a>

                    <?php if (!empty($children)) : ?>
                        <ul class="dropdown-menu">
                            <?php foreach ($children as $child) : ?>
                                <li><a href="#"><?php echo $child['Genre']['name']; ?></a></li>
                            <?php endforeach; ?>
                        </ul>
                    <?php endif; ?>
                </li>
            <?php endif; ?>
        <?php endforeach; ?>
    </ul>
</li>

<?php
    function getChildren($genres, $parent_id) {
        $children = array();
        foreach ($genres as $genre_inner) {
            if ($genre_inner['Genre']['parent_id'] == $parent_id) {
                $children[] = $genre_inner;
            }
        }
        return $children;
    }
?>

与cakephp无关的Bootstrap下拉列表

1 个答案: