Question

我正在尝试制作餐馆菜单，我必须有类别和子类别，所以我创建了以下表格：

Table: Categories
       ID
       NAME

Table: Subcategories
       ID
       NAME
       PRICE
       DESCRIPTION
       CATEGORIES_ID

我正在使用wanwizard的Codeigniter和DataMapper PHP。所以目前我有一些版本的2个foreach循环，但问题是，当我添加一个新的SUBCATEGORY并且只显示最后一个时，所以它没有列出该类别的所有子类别任何想法我在哪里我错了？

public function index()
{

$categories = new Category_model();
$subcategories = new Subcategory_model();
$categories->get();
$subcategories->get();

$recent_categories = array();
foreach ($categories as $category)
{
  foreach($subcategories as $subcategory)
  {
    if($subcategory->categories_id == $category->id)
    {
      $single_category = array
      (
        'category_name' => $category->name,
        'subcategory_name' => $subcategory->name,
        'subcategory_description' => $subcategory->description,
        'subcategory_price' => $subcategory->price,
      );
    }
  }
  array_push($recent_categories, $single_category);
}

$data = array
(
  'categories' => $recent_categories,
);

$this->parser->parse('templates/content_menu', $data);
}

这就是观点：

{categories}
  <div class="grid-12 ourmenu">
    <!-- MENU TITLE -->
    <h2>{category_name}</h2>
    <hr/>
      <!-- MENU ITEM -->
      <h4>
        <a class="clb-photo" href="<?php echo site_url('design/images/photos/food.jpg'); ?>">
          {subcategory_name}
        </a>
        <span>{subcategory_price}</span>
      </h4>
      <p>{subcategory_description}</p>
  </div>
  {/categories}

Answer 1

它在你的循环结构中。您需要在array_push循环内foreach($subcategories as $subcategory)进行操作。您的single_category数组会在循环的每次迭代时被覆盖，但在覆盖之后才会将其添加到recent_categories数组中。将您的代码更改为：

foreach ($categories as $category)
{
  foreach($subcategories as $subcategory)
  {
    if($subcategory->categories_id == $category->id)
    {
      $single_category = array
      (
        'category_name' => $category->name,
        'subcategory_name' => $subcategory->name,
        'subcategory_description' => $subcategory->description,
        'subcategory_price' => $subcategory->price,
      );
      array_push($recent_categories, $single_category); // ****** MOVED THIS LINE 
    }
  }
}

Codeigniter：类别和子类别

1 个答案: