php - Laravel - Eloquent 关系不起作用

Question

我有两个具有一对多关系的模型。我想在 Blade 中显示具有关系的数据。

店铺 table
id | name | url 1 | NY | ny | 2 | CA | ca |
产品表
id | shop_id | slug 1 | 1 | ca 2 | 2 | wa
店铺.php

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

产品型号

 public function shops()
{
    return $this->belongsTo(Shop::class, 'id');
}

Controller .php

public function category($slug)
{

    $shop = Shop::where('url', $slug)->firstorfail();
    $products = Product::with(['shops'])->where(['shop_id' => $shop->id)->get();
    $url = Shop::where('id', $products->shop_id)->pluck('url');
}

路线

Route::get('/{url}/{slug}', 'Controller@category')->name('view')->where('slug', '[\w\d\-]+(.*)');

查看

<a href="{{ route('view', [$url, $products->slug]) }}"

它返回 此集合实例上不存在属性 [shop_id]。

Answer 1

Try this:  
  public function products(){
        return $this->hasMany('App\Product','shop_id','id');
    }