我試圖更新訂單表,其具有通過鏈接的freign鍵約束CUSTOMER_ID到客戶表。
遷移文件(工程100%):
Schema::create('orders', function (Blueprint $table) {
$table->integer('order_id')->unsigned()->index();
$table->integer('customer_id')->unsigned()->index();
$table->foreign('customer_id')->references('customer_id')->on('customers')->onDelete('cascade');
$table->string('order_status');
$table->string('customer_note')->nullable();
$table->timestamp('order_date');
$table->timestamps();
$table->softDeletes();
$table->primary(['order_id', 'customer_id']);
});
在我的模型我已經做了以下幾列可填寫的,這樣Laravel不會忽略他們:
protected $fillable = [
'order_id', 'customer_id', 'order_status', 'customer_note', 'order_date',
];
當我創建/更新我在OrderController的update方法下面使用了以下幾行代碼。我使用firstOrCreate()以確保這不會失敗,如果不知何故訂單被刪除或永遠不會添加在首位。
$order = Order::firstOrCreate(['order_id' => $request->input('id')]);
$order->order_id = $request->input('id');
$order->customer_id = $request->input('customer_id');
$order->order_status = $request->input('status');
$order->customer_note = $request->input('customer_note');
$order->order_date = $request->input('date_created');
$order->save();
當我嘗試更新我在日誌文件中收到以下錯誤消息的順序:
Next Illuminate\Database\QueryException: SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`vcc-backoffice`.`orders`, CONSTRAINT `orders_customer_id_foreign` FOREIGN KEY (`customer_id`) REFERENCES `customers` (`customer_id`) ON DELETE CASCADE) (SQL: insert into `orders` (`order_id`, `updated_at`, `created_at`) values (76, 2017-09-08 08:55:37, 2017-09-08 08:55:37)) in /home/vagrant/Projects/vcc-backoffice/vendor/laravel/framework/src/Illuminate/Database/Connection.php:647
我注意到,插入語句只試圖插入3列。 order_id
,updated_at
,created_at
我假設該行無法創建因爲國外* CUSTOMER_ID ** colun沒有被填滿,但我想不出爲什麼Laravel被忽略它們。
我想也許,輸入不正確的格式,但即使硬編碼的CUSTOMER_ID爲1沒有工作。 (customer_id 1存在於customers表中)。
我還檢查並確認$請求 - >輸入(「CUSTOMER_ID」)包含正確的整數,在這種情況下是1,確實存在如客戶表中的記錄。
我懷疑Laravel忽略了相關的列,但我不明白爲什麼。
我的模型文件,如下所示:
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Notifications\Notifiable;
use Illuminate\Database\Eloquent\SoftDeletes;
class Order extends Model
{
use Notifiable;
use SoftDeletes;
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = [
'order_id', 'customer_id', 'order_status', 'customer_note', 'order_date',
];
/**
* Whether the primary key auto-increments.
*
* @var bool
*/
public $incrementing = false;
/**
* Set the primary key.
*
* @var string
*/
protected $primaryKey = ['order_id', 'customer_id'];
protected $with = ['products'];
/**
* The products that belong to the Order.
*/
public function products()
{
return $this->belongsToMany('App\Product','order_product','order_id','product_id')
->withPivot('qty')
->withTimeStamps();
}
/**
* The customer that belongs to the Order.
*/
public function customer()
{
return $this->belongsTo('App\Customer');
}
}
當您添加外鍵則記錄必須存在於相關表格。請檢查 –
什麼是'protected $ primaryKey = ['order_id','customer_id'];'for? – Hammerbot
@SagarGautam在回答之前請仔細閱讀我的問題。我已經解釋了一切 –