Laravel

Question

我有两个模型有 One-to-Many 关系。我想显示关系在 blade.

中的数据

店铺Table

<strong>id |姓名 | url</strong> 1 |纽约 |纽约 | 2 |加州 |加州 |

产品Table

<strong>id | shop_id |鼻涕虫</strong> 1 | 1 |加州 2 | 2 |哇

Shop.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 returns 属性 [shop_id] 在这个 collection 实例上不存在。

Answer 1

您不需要您刚刚建立的店铺关系

products = Product::where('shop_id',$shop->id)->get();

事实上你的函数没有return值，它有什么用？

Answer 2

您指定了错误的列：

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

Answer 3

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

Answer 4

你的问题在这里：<a href="{{ route('view', [$url, $products->slug]) }}"

$products - this is collection. You need to do $products[0]->slug

或

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

Laravel - Eloquent 关系不正常

Laravel - Eloquent Relationship not working

php

orm

relational-database

eloquent