Question

我使用事务后如何重定向并抛出新的\ Exception（＆＃39;错误＆＃39;）;从下面的代码中我发现错误它停在其他地方{throw new \ Exception（＆＃39; Error＆＃39;）;}和我的if（$ errors）无法正常工作

是他们在抛出new \ Exception（）之后重定向的吗？

$errors = false;
    DB::transaction(function () use ($count,$request,$a,$errors) {
        for ($i=0; $i < $count; $i++) {
            $warehouse_products_sell = New Warehouse_products_sell;
            $id_w = $request->input('idw');
            $id_c = $request->get('id_c')[$i];
            $id_p = $request->get('id_p')[$i];
            $qty = $request->input('quantity_box')[$i];
            $price = $request->input('price')[$i];
            $available = $this->check_stock($id_w, $id_p, $qty);
          if($available > 0){

            $warehouse_products_sell->save();
          }else{

            echo "error";
            $errors = true;
            throw new \Exception('Error');
          }
        }
    });
    if ($errors) {
       return redirect('URL');
    }else{
        return 'x';
    }

Answer 1

不要在没有数据库事务的情况下自行检查数据库事务：

// Step 1. Check all products
$products = [];
for ($i=0; $i < $count; $i++) {
    $warehouse_products_sell = New Warehouse_products_sell;
    $id_w = $request->input('idw');
    $id_c = $request->get('id_c')[$i];
    $id_p = $request->get('id_p')[$i];
    $qty = $request->input('quantity_box')[$i];
    $price = $request->input('price')[$i];
    $available = $this->check_stock($id_w, $id_p, $qty);
    if ($available <= 0){
        throw new \Exception(sprintf('Not enough stock for %s/%s (stock=%d, requested=%d)', $id_w, $id_p, $available, $qty));
    }
    $products[] = $warehouse_products_sell
}

// Step 2. All checks have passed, save data to database
DB::transaction(function () use ($products) {
    foreach ($products as $product) {
        $product->save();
    }
});

我如何在使用事务后重定向并抛出新的\ Exception（＆＃39; Error＆＃39;）

1 个答案: