对重载属性App\\Models\\产品的间接修改：：$variations没有影响

Question

$product_model = product::findOrFail($product['product_id']);

$product_model->variations['variations'][$product['variation_index']]['quantity'] += 1;

$product_model->save();

Answer 1

当您将字段cast为array时，必须将其存储在一个新变量中，如这

$product_model = product::findOrFail($product['product_id']);

$variations = $product_model->variations;

$variations['variations'][$product['variation_index']]['quantity'] += 1;

$product_model->variations = $variations;

$product_model->save();

或者你可以做你想要什么如果你有拉拉9