Question

我想显示添加到数据库中的所有属性的列表，但每次尝试它都不起作用。我想在头版的div中显示这个。我试着把它插入到features.tpl：

<?php 
foreach ($attribute_groups as $attribute_group) {
echo $attribute_group['name'];
print_r($attribute_group);
echo '<select name="listaGrupe">';
foreach ($attribute_groups['attribute'] as $attribute) {
echo '<option value="'.$attribute.'">'.$attribute.'</option>';
}
echo '</select>';
}

?>

Answer 1

您需要使用此模型

public function getAttributes($data = array()) {
    $sql = "SELECT *, (SELECT agd.name FROM " . DB_PREFIX . "attribute_group_description agd WHERE agd.attribute_group_id = a.attribute_group_id AND agd.language_id = '" . (int)$this->config->get('config_language_id') . "') AS attribute_group FROM " . DB_PREFIX . "attribute a LEFT JOIN " . DB_PREFIX . "attribute_description ad ON (a.attribute_id = ad.attribute_id) WHERE ad.language_id = '" . (int)$this->config->get('config_language_id') . "'";

    if (!empty($data['filter_name'])) {
        $sql .= " AND LCASE(ad.name) LIKE '" . $this->db->escape(utf8_strtolower($data['filter_name'])) . "%'";
    }

    if (!empty($data['filter_attribute_group_id'])) {
        $sql .= " AND a.attribute_group_id = '" . $this->db->escape($data['filter_attribute_group_id']) . "'";
    }

    $sort_data = array(
        'ad.name',
        'attribute_group',
        'a.sort_order'
    );  

    if (isset($data['sort']) && in_array($data['sort'], $sort_data)) {
        $sql .= " ORDER BY " . $data['sort'];   
    } else {
        $sql .= " ORDER BY attribute_group, ad.name";   
    }   

    if (isset($data['order']) && ($data['order'] == 'DESC')) {
        $sql .= " DESC";
    } else {
        $sql .= " ASC";
    }

    if (isset($data['start']) || isset($data['limit'])) {
        if ($data['start'] < 0) {
            $data['start'] = 0;
        }               

        if ($data['limit'] < 1) {
            $data['limit'] = 20;
        }   

        $sql .= " LIMIT " . (int)$data['start'] . "," . (int)$data['limit'];
    }   

    $query = $this->db->query($sql);

    return $query->rows;
}

您的控制器中只需加载此模型并使用它返回的数据进行操作。默认情况下，它返回数据库中的所有属性

Answer 2

您可能正在寻找更接近此的函数格式：

foreach ($attribute_groups as $attribute_group) {
$options = '';
$name = $attribute_group['name'];
$output = '<select name="$name">';
foreach ($attribute_groups['attribute'] as $attribute) {
$options .= '<option value="'.$attribute.'">'.$attribute.'</option>';
}
echo $output.$options.'</select>';
}

Answer 3

检查您的控制器..如果$ attribute_groups中有数据....

的print_r（$ attribute_groups）;

并查看..确保您的$ attribute_groups数组不为空...我认为您的$ attribute_groups数组为空时会出现该错误...

如果你确定，$ attribute_groups可以为空，那么你可以检查......

if(!empty($attribute_groups)){
foreach ($attribute_groups as $attribute_group) {
$options = '';
$name = $attribute_group['name'];
$output = '<select name="$name">';
foreach ($attribute_groups['attribute'] as $attribute) {
$options .= '<option value="'.$attribute.'">'.$attribute.'</option>';
}
echo $output.$options.'</select>';
}
}

这将查看你的数组是否为空...如果没有，那么foreach（）......否则什么也不做

显示opencart中所有属性的列表

3 个答案: