Laravel: 当客户有多个记录时更新问题

Question

我将这三个 table device_companies、devices 和 device_inventory 与关系连接起来，并在创建和更新客户时加载了 ajax。但是，仅加载由 subscriber_devices table.

管理的可用数据

create 部分按要求工作。但是，在更新与所选客户关联的所有 devices 时正在加载。例如：如果 customer 有 ABC -> DEF -> A1,A2,A3 而我正在更新 A2 的详细信息，那么 A1,A3 不得出现在下拉列表中。只有 A2 和 A4,A5,A6,... 应该加载。

表格：

device_companies:  ->  devices:                ->  device_inventories:
|-- id                 |-- id                      |-- id
|-- title              |-- device_company_id       |-- device_id
...                    |-- title                   |-- serial_number
                       ...                         ...

subscriber_devices:
|-- id
|-- subscriber_id
|-- device_inventory_id
...

设备公司：

public function devices()
{
  return $this->hasMany(Device::class);
}

public function _dropdown($useWith = null, $subscriber = null)
{
  $Self = self::where('status', \Common::STATUS_ACTIVE)->select([
    'id',
    'title'
  ])->orderBy('title', 'ASC');

  # with relations
  if($useWith == true)
    $Self = $Self->whereHas('devices.deviceInventory', function($q) use ($subscriber) {
      $q->whereDoesntHave('subscriberDevice', function($q) use ($subscriber) {
        if(!is_null($subscriber))
          $q->where('subscriber_id', '!=', $subscriber->subscriber_id);
      });
    });

  # building query
  $Self = $Self->get();

  return ($Self->isEmpty() == false)
    ? $Self->toArray()
    : null;
}

设备：

public function deviceCompany()
{
  return $this->belongsTo(DeviceCompany::class);
}

public function deviceInventory()
{
  return $this
    ->hasMany(DeviceInventory::class)
    ->where('status', \Common::STATUS_ACTIVE)
    ->orderBy('serial_number', 'ASC');
}

public function _dropdown($deviceCompanyId, $useWith = null, $subscriber = null)
{
  $Self = self::select([ 'id', 'title' ])->where([
    'device_company_id' => $deviceCompanyId,
    'status'            => \Common::STATUS_ACTIVE
  ])->orderBy('title', 'ASC');

  # with relation
  if($useWith == true)
    $Self = $Self->whereHas('deviceInventory', function($q) use ($subscriber) {
      $q->whereDoesntHave('subscriberDevice', function($q) use ($subscriber) {
        if(!is_null($subscriber))
          $q->where('subscriber_id', '!=', $subscriber->subscriber_id);
        });
    });

  # building query
  $Self = $Self->get();

  return ($Self->isEmpty() == false)
    ? $Self->toArray()
    : null;
}

设备清单：

public function subscriberDevice()
{
  return $this->hasOne(SubscriberDevice::class);
}

public function _dropdown($deviceId, $useWith = null, $subscriber = null)
{
  $Self = self::select([
    'id',
    'serial_number AS title'
  ])->where([
    'device_id' => $deviceId,
    'status'    => \Common::STATUS_ACTIVE
  ])->orderBy('title', 'ASC');

  # with relations
  if($useWith == true)
    $Self = $Self->whereDoesntHave('subscriberDevice', function($q) use ($subscriber) {
      if(!is_null($subscriber))
        $q->where('subscriber_id', '!=', $subscriber->subscriber_id);
    });

  # building query
  $Self = $Self->get();

  return ($Self->isEmpty() == false)
    ? $Self->toArray()
    : null;
}

订阅者设备：

public function subscriber()
{
  return $this->belongsTo(Subscriber::class);
}
public function deviceInventory()
{
  return $this->belongsTo(DeviceInventory::class);
}

响应（当前）：

{
    0: "-- Device Inventory --",
    1: "A1",
    2: "A2",
    3: "A3",
    4: "A4",
    5: "A5",
    6: "A6",
}

当前用户有3个inventories与他A1, A2 & A3关联。
选择要编辑的 inventory 是 A2。
A4, A5 & A6可用inventories可以选择

因此，预期结果为：

{
    0: "-- Device Inventory --",
    2: "A2",
    4: "A4",
    5: "A5",
    6: "A6",
}

Answer 1

好吧，我花了一段时间。但是，我解决了这个问题。这是我的最终代码...

public function _dropdown($deviceId, $useWith = null, $subscriber = null)
{
  ...

  # with relations
  if($useWith == true)
    $Self = $Self->whereDoesntHave('subscriberDevice', function($q) use ($subscriber) {
      if(!is_null($subscriber))
        $query->where('token', '!=', $subscriber->token);
    });

  ...
}

事实证明，唯一需要更改的是 where 条件的列从 subscriber_id 到 token。 token 是订阅者正在编辑的 inventory 记录的唯一标识符。

希望这可能是遇到类似问题的人。

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