从 laravel 上的 2 个表中获取值

Question

Schema::create('discounts', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->dateTime('from', $precision =0);
            $table->dateTime('to', $precision =0);
            $table->enum('status', [0, 1, 2])->default(0)->comment('0:active 1:expired 2:scheduled');
            $table->timestamps();
            $table->softDeletes();
        });

Schema::create('discount_product', function (Blueprint $table) {
            $table->id();
            $table->string('code');
            $table->unsignedBigInteger('discount_id');
            $table->unsignedBigInteger('product_id');
            $table->foreign('discount_id')->references('id')->on('discounts')->onDelete('cascade');
            $table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
            $table->float('rate');
            $table->timestamps();
            $table->softDeletes();
        });


Schema::create('products', function (Blueprint $table) {
            $table->id();
            $table->string('name')->unique();
            $table->float('price');
            $table->unsignedBigInteger('user_id');
            $table->unsignedBigInteger('category_id');
            $table->unsignedBigInteger('brand_id');
            $table->string('image')->nullable();
            $table->text('description')->nullable();
            $table->integer('quantity');
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
            $table->foreign('category_id')->references('id')->on('categories')->onDelete('cascade');
            $table->foreign('brand_id')->references('id')->on('brands')->onDelete('cascade');
            $table->timestamps();
            $table->softDeletes();
        });

public function discountProducts()
    {
        return $this->hasMany(DiscountProduct::class);
    }


 public function discount()
    {
        return $this->belongsTo(Discount::class);
    }

    /**
     * Get product of discount
     */
    public function product()
    {
        return $this->hasMany(Product::class);
    }

我有 3 个这样的表：折扣、折扣产品、产品，在我的 detailProduct.blade.php 中，我想让产品有折扣，但我不知道该怎么做。有人能帮我吗 ？非常感谢你

这是我的：查看详细功能：我得到了 discount_products

 public function show($id)
    {
        $discount = $this->discountRepository->getDiscountById($id);
        $discount_products = $this->discountRepository->getDiscontProductOnDiscount($id);

        return view('user.discounts.detailDiscount', 
                   ['discount_products' => $discount_products, 'discount' => $discount]);
    }

Answer 1

你可以这样做

$data['discount'] = $this->discountRepository->getDiscountById($id);
$data['discount_products'] = $this->discountRepository->getDiscontProductOnDiscount($id);

return view('user.discounts.detailDiscount', $data);

在您看来，您可以访问像这样的数据 $discount ， $discount_products

如果你的 $product 上有很多数据，你不能先 foreach 并在视图中这样打印，我假设你会在 table 上打印所以会这样

<tbody>
   @foreach ($products as $row)
    <tr>
     <td>{{$row->name}}</td>
     <td>{{$row->price}}</td>
    <tr>
   @endforeach
</tbody>

如果您的数据只有 1 行，您可以像这样访问

$products[0]->name