Laravel:不同条件的查询构建器基础查询

MrS*_*ngh 1 php sql query-builder radix laravel

在我的应用程序中,有一种情况我必须运行相同的查询 3 次,但每个查询都有一些不同的条件。例如:active:查询+ active conditionsinactive:查询+ inactive conditions。ETC。

这是我的代码:

$activeInventory = $inactiveInventory = \DB::table('device_inventories')
  ->where([
    'device_companies.company_id'  => session()->get('COMPANY_ID'),
    'device_inventories.device_id' => $Self->id,
  ])->select([
    ...
  ])
  ->join('devices', 'devices.id', '=', 'device_inventories.device_id')
  ->join('device_companies', 'device_companies.id', '=', 'devices.device_company_id');

// active records
$active = $activeInventory
  ->where('device_inventories.status', 'T')
  ->join('u_devices', 'u_devices.device_inventory_id', '!=', 'device_inventories.id')
  ->get() ?? null;

// inactive records
$inactive = $inactiveInventory
  ->where('device_inventories.status', 'F')
  ->get() ?? null;

// returning data
return [
  'model' => $Self,
  'active' => $active,
  'inactive' => $inactive,
];
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请注意,我已u_devicesActive查询中加入该表。但是当我运行Inactive查询时, join withu_devices也出现在该查询中。即使我使用不同的变量来存储基本查询并运行它。

我在这里做错了什么..?

Tim*_*wis 7

这是由于附加查询逻辑的工作方式造成的。当您将更改附加到查询的一个版本时,它会修改原始查询,因此来自基础的任何后续查询也会受到影响。您应该能够使其与clonePHP 中的关键字一起使用:

$baseQuery = \DB::table('device_inventories')->where([
  'device_companies.company_id'  => session()->get('COMPANY_ID'),
  'device_inventories.device_id' => $Self->id,
])->select([
  ...
])
->join('devices', 'devices.id', '=', 'device_inventories.device_id')
->join('device_companies', 'device_companies.id', '=', 'devices.device_company_id');

$active = (clone $baseQuery)->where('device_inventories.status', 'T')
->join('u_devices', 'u_devices.device_inventory_id', '!=', 'device_inventories.id')
->get() ?? null;

$inactive = (clone $baseQuery)->where('device_inventories.status', 'F')->get() ?? null;

return [
  'model' => $Self,
  'active' => $active,
  'inactive' => $inactive,
];
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当您使用 时clone,您将创建查询的副本,因为它在代码中的该位置,因此后续使用不会“污染”查询。