Question

我有相关产品的模型类别：

public function products()
{
    return $this->hasMany(Product::class);
}

在MainController中，我有代码：

$products = Category::with('products')->whereNull('parent_id')->paginate(15);

仅对方法类别进行分页，但是如何对产品进行分页？

Answer 1

在另一个分页中使用分页并不是一个好主意，但是，如果要执行此操作，则应该为每个类别的产品创建manual pagination：

use Illuminate\Pagination\LengthAwarePaginator as Paginator;
use Illuminate\Http\Request;

$categories = Category::with('products')->whereNull('parent_id')->paginate(15);
foreach ($categories as $category) {
    $count = $category->products->count(); // total count of products in this category
    $limit = 10; // count of products per page in child pagination
    $page = $request->input('category'.$category->id.'page', 1); // current page of this category's pagination
    $offset = ($page * $limit) - $limit; // offset for array_slice()
    $itemsForCurrentPage = array_slice($category->products->toArray(), $offset, $limit, true);
    $paginator = new Paginator($itemsForCurrentPage, $count, $limit, $page, [
          'path'  => $request->url(),
          'query' => $request->query(),
    ]);
    $paginator->setPageName('category'.$category->id.'page');
    $category->paginator = $paginator;  
}

return view('categories.index', ['categories' => $categories]);

然后在您的categories\index.blade.php中：

<ul>
    @foreach ($categories as $category)
        <li>
            <h3>{{ $category->title }}</h3>
            @if ($category->paginator)
                <ul>
                    @foreach ($category->paginator->items() as $product)
                        <li>{{ $product['title'] }}</li>
                    @endforeach
                </ul>
                {{ $category->paginator->links() }}
            @endif
        </li>
    @endforeach
</ul>
{{ $categories->links() }}

我希望这会有所帮助，但我再说一遍，在另一个分页中使用分页并不是一个好主意。

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1 个答案: