Laravel 搜索关系

Question

我有两个相关的模型。我正在尝试在 Products 中进行搜索，并且只显示实际搜索结果，而不是显示该产品所在类别的所有产品。我不想搜索任何类别，因为无论搜索什么或找到什么，这些类别都会始终显示。

Example. I have the following categories:

- Food
- Drinks
- Candy

My "Food" category has the following products:

- Strawberry
- Apple
- Banana

My "Drinks" category has the following products:

- Banana Cocktail
- Beer
- Cola

My "Candy" category has the following products:

- Strawberry Lollipop
- Chocolate Bar
- Banana Ice Cream

所以，我想要实现以下目标。我搜索了一种名为“香​​蕉”的产品。我想要显示的是：

Category Food
- Product Banana

Category Drinks
- Product Banana Cocktail

Category Candy
- Product Banana Ice Cream

但我的问题是，使用我的代码，如果我执行搜索“香蕉”，它会显示找到香蕉的类别，并返回并显示该类别中的所有产品，而不是仅显示我搜索的产品为了。我怎样才能实现它，以便只显示搜索到的产品？

类别模型：

class Categories extends Eloquent {

    public function products()
    {
        return $this->hasMany('Products');
    } 
}

产品型号：

class Products extends Eloquent {

    public function categories()
    {
        return $this->belongsTo('Categories');
    }
}

我的控制器：

    $searchString       = Input::get('search');

    if($searchString)
    {
        $categories = Categories::with('products')->orderBy($order, $by)->whereHas('products', function ($query) use ($searchString){
            $query->where('name', 'like', '%'.$searchString.'%');
        })->get();
    }
    else {
        $categories     = Categories::with('products')->orderBy($order, $by)->get();
    }

我的观点：

@foreach($categories as $category)
    {{ $category->name }} // Show the category name

    @foreach($category->products as $product)
    {{ $product->name }} // Show all products in that category

    @endforeach
@endforeach

Answer 1

我不知道您是如何查看结果的，但我认为如果您只是急切地将产品加载到类别中，您应该会很好。

$categories = Categories::whereHas('products', function ($query) use ($searchString){
        $query->where('name', 'like', '%'.$searchString.'%');
    })
    ->with(['products' => function($query) use ($searchString){
        $query->where('name', 'like', '%'.$searchString.'%');
    }])->get();

foreach($categories as $category){
    echo $category->name . ':' . PHP_EOL;
    foreach($category->products as $product){
        echo . '-' . $product->name . PHP_EOL;
    }
}