我如何理解Table :: find($ id)应该等效于Table :: where('id',$ id) - > first(), 但我收到阵列而不是1个记录..
Order.php(模特):
public function change_user($order_id, $user_id) {
$order = Order::find($order_id);
dd($order);
if ($order == null) return false;
$order->user = $user_id;
return $order->save();
}
和dd:
的结果Collection {#270 ▼
#items: array:1 [▼
0 => Order {#271 ▼
+timestamps: true
#guarded: array:1 [▶]
#hidden: array:2 [▶]
#connection: null
#table: null
#primaryKey: "id"
#perPage: 15
+incrementing: true
#attributes: array:30 [▶]
#original: array:30 [▶]
#relations: []
#visible: []
#appends: []
#fillable: []
#dates: []
#dateFormat: null
#casts: []
#touches: []
#observables: []
#with: []
#morphClass: null
+exists: true
+wasRecentlyCreated: false
}
]
}
如果我错了,查找应返回1行,我仍然遇到此问题,因为我收到错误消息,当我删除dd()时:
BadMethodCallException in Macroable.php line 81: Method save does not exist.
in Macroable.php line 81
at Collection->__call('save', array()) in Order.php line 64
at Collection->save() in Order.php line 64
at Order->change_user(array('57'), '18') in RegistersUsers.php line 69
at AuthController->register(object(Request), object(Order))
at call_user_func_array(array(object(AuthController), 'register'), array(object(Request), object(Order))) in Controller.php line 76
答案 0 :(得分:2)
如果将数组传递给find
,它将返回一个集合。
似乎$order_id
是一个数组。
答案 1 :(得分:1)
您是否更改了主键?
检查$ id是否不是数组。如果它是一个数组,Laravel返回的行数超过1行。