Php 从数据库中减去
我试图用雄辩的模型从数据库中减去一个值,但我似乎无法让它工作 以下是我现在拥有的:Php 从数据库中减去,php,laravel,eloquent,subtraction,Php,Laravel,Eloquent,Subtraction,我试图用雄辩的模型从数据库中减去一个值,但我似乎无法让它工作 以下是我现在拥有的: public function store() { $sku = Input::get('sku'); $quantitysold = Input::get('quantitysold'); $inventory = Inventory::where('sku', $sku)->decrement('sku', $quantitysold); $inventory
public function store()
{
$sku = Input::get('sku');
$quantitysold = Input::get('quantitysold');
$inventory = Inventory::where('sku', $sku)->decrement('sku', $quantitysold);
$inventory->save();
$transaction = new Transaction;
$transaction->sku = $sku;
$transaction->quantitysold = $quantitysold;
$transaction->save();
return 'Item has been saved';
}
当我在tinker中尝试时,我得到以下结果:
PHP Fatal error: Call to a member function save() on a non-object
使用
减量后不要调用save
减量
方法本身