保存多个项目多对多Laravel 6

Question

我正在尝试将多个Product保存到Purchase中，将Vuejs用于前端，Laravel用于Backend，这是它们之间的many-to-many关系。

In My Vuejs

   <tr class="tablePurchase--td" v-for="(item, index) in items">
        <td>{{item.name}}</td>
        <td>{{item.code}}</td>
        <td>
            <input type="number" class="table-quantity" v-model="items[index].quantity">
        </td>
        <td>
            <input type="number" class="table-quantity" v-model="items[index].unit_price" placeholder="0.00">
        </td>
        <td>
            <input type="number" class="table-quantity" v-model="items[index].discount" placeholder="0.00">
        </td>
        <td>
            <v-btn small color="red" outlined @click="removeItem(index)">
                <v-icon>mdi-delete</v-icon>
            </v-btn>
       </td>
    </tr>

In my Controller

    public funtion store(Request $request) {
        ....

        foreach($purchase->products as $item) {
            $purchase->products()->attach($product_id, [
                'unit_price' => $item['unit_price'],
                'quantity' => $item['quantity'],
                'discount' => $item['discount'],
            ]);
        }
    }

但是，它得到了空数组...我甚至尝试过dd($request->items)和它的返回null

我将感谢你所有的帮助？谢谢

Answer 1

您应该将所有输入命名为items[]

//...
<input type="number" class="table-quantity" name="items[]" v-model="items[index].unit_price" placeholder="0.00">
//...