Question

我正在尝试更新发票中的项目，删除项目或添加项目时需要和问题，如果我删除所有更新的项目，我需要帮助，请我收到错误消息：“ SQLSTATE [42S22]：找不到列：1054”字段列表”中的未知列“ product”（SQL：更新invoice_product设置了id = 27，invoice_id = 29，product_id = 3，unit_price = 80，qty = 1，created_at = 2018-10-08 16:54:53，updated_at = 2018 -10-08 16:54:53，deleted_at =，product = 3，其中invoice_id = 29和id = 27）“

发票表

id
发票_no
日期
小计
折扣
总计

项目表

id
商品代码
item_desc
单价

invoice_items表

发票编号
item_id
单价
数量

发票模型

public function items()
    {
        return $this->hasMany(InvoiceProduct::class, 'invoice_id');
    }

我的控制器更新

$invoice = Invoice::findOrFail($id);

        $items = [];
        $itemIds = [];
        $subTotal = 0;

        foreach($request->items as $item) {
            if(isset($item['id'])) {
                InvoiceProduct::where('invoice_id', $invoice->id)
                    ->Where('id', $item['id'])
                    ->update($item);

                $itemIds[] = $item['id'];
               $item ='please re add items';
            } else {
                $items[] = new InvoiceProduct($item);
            }

            $subTotal += $item['unit_price'] * $item['qty'];
        }


        $data = $request->except('items');
        $data['sub_total'] = $subTotal;
        $data['total'] = $data['sub_total'] - $request->discount;

        $invoice->update($data);

        InvoiceProduct::whereNotIn('id', $itemIds)
            ->where('invoice_id', $invoice->id)
            ->delete();

        if(count($items)) {
            $invoice->items()->saveMany($items);
        }
 return response()
            ->json(['saved' => true, 'id' => $invoice->id]);
    }

Answer 1

由于这是Many to Many关系。您的关系应该为belongsToMany()。

模型关系

class Invoice extends Model
{
    public function items()
    {
        return $this->belongsToMany(Item::class)
            ->withPivot(['unit_price', 'qty']);
    }
}

class Item extends Model
{
    public function invoices()
    {
        return $this->belongsToMany(Invoice::class)
            ->withPivot(['unit_price', 'qty']);;
    }
}

处理数据

public class InvoiceControler extends Controller
{
    public function store(Request $reques)
    {
        // save the invoice
        $invoice = Invoice::create([
        ...
        ]);

        // save invoice-items
        foreach($request->items as $item) {

            $invoice->intems()->attach($item['id'], [
                'unit_price' => $item['unit_price'],
                'qty => $item['quantity']
            ]);
        }
    }

    public function update(Request $request, Invoice $invoice)
    {
         // update the invoice with new request data.
         $invoice->update([
         ...
         ]);

         // items to be synchronize
         // $items = [];

         // create an item array to synchronize
         foreach($request->items as $item) {

            array_set($items, $item['id'], [
                'unit_price' = $item['unit_price],
                'qty' = $item['qty']
            ]);

         }

         // synchronize items.
         $invoice->items()->sync($items);
    }
}

laravel更新与发票中的项目有很多关系

1 个答案: