Laravel -从ajax响应数据中的产品(belongsTo)访问子类别。

public function subcategory()
{
    return $this->belongsTo(Subcategory::class);
}

Route::get('/get-product-subcategory', 'ProductController@getProductSubcategory');

public function getProductSubcategory(Request $request)
{
    $productId = $request->input('product_id');
    $product = Product::find($productId);

    if ($product) {
        $subcategory = $product->subcategory;
        return response()->json(['subcategory' => $subcategory]);
    }

    return response()->json(['error' => 'Product not found']);
}

$.ajax({
    url: '/get-product-subcategory',
    method: 'GET',
    data: { product_id: productId },
    success: function(response) {
        if (response.subcategory) {
            // 访问子类别数据
            console.log(response.subcategory);
        } else {
            console.log(response.error);
        }
    },
    error: function(xhr, status, error) {
        console.log(error);
    }
});