Eloquent：使用不存在的列进行查询

Question

我正在尝试以下操作：我有两个通过 1xN 关系相关的模型（Pub 和 Schedule），如下所示：

酒馆：

/**
 * @return \Illuminate\Database\Eloquent\Relations\HasMany
 */
public function pubSchedules()
{
    return $this->hasMany(Schedule::class);
}

时间表：

/**
 * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
 */
public function pub()
{
    return $this->belongsTo(Pub::class);
}

表计划具有以下字段：

标识 | pub_id |工作日 |开放时间 |关闭时间 |

我使用以下函数来了解一个酒吧当前是否（或未）开放：

/**
 * @return bool
 */
public function isPubCurrentlyOpen()
{
    $schedules = Schedule::where([
            ['pub_id', $this->id ],
            ['week_day', Carbon::now()->dayOfWeek],
    ])->get();

    foreach ($schedules as $schedule){
        $isOpen[] =
            Carbon::now('Europe/Madrid')->between(
                Carbon::now('Europe/Madrid')->setTimeFromTimeString($schedule->opening_time),
                Carbon::now('Europe/Madrid')->setTimeFromTimeString($schedule->closing_time)
            );
    }

    if(in_array(true, $isOpen)){
        return true;
        //return "Pub Opened";
    }

    return false;
    //return "Pub Closed";
}

In my PubController I'd like, when the option "Filter by open pubs" is chosen if($request->openPubs == 1), to show only opened pubs isOpen ==true.

知道模型之间的关系，我该怎么做？

我正在寻找这样的东西：

 if($request->openPubs == 1)
 {
   $pubs = $pubs->with('pubSchedules')->where('isOpen' == true);
 }

你能帮帮我吗？

非常感谢！

Answer 1

您可以使用“whereHas”来做到这一点

$openPubs = Pub::whereHas('schedule', function ($query) {
       $query->where('week_day', Carbon::now()->dayOfWeek);
       $query->whereRaw(
           "'".Carbon::now('Europe/Madrid')->format("H:i:s")."' BETWEEN opening_time AND closing_time"
       ); 
})->get();       

这是假设您的开始时间和结束时间是适当的时间格式，而不是字符串（尽管字符串在 24 小时格式下也可以使用）。

您可能会通过使用范围来实现类似于您正在寻找的东西，例如

public function scopeFilterBy($query, $filter = null) {
     if ($filter == "isOpen") {
        $query->whereHas('schedule', function ($query) {
          $query->where('week_day', Carbon::now()->dayOfWeek);
          $query->whereRaw(
            "'".Carbon::now('Europe/Madrid')->format("H:i:s")."' BETWEEN opening_time AND closing_time"
           );  
        });
    }
    return $query; //Not sure if this is needed
}

你可以这样做：

 Pub::filterBy($request->openPubs ? "isOpen" : null)->get(); 

Answer 2

我不完全理解你是如何做到这一点的，但它应该是这样的

   $pubs = Pub::with(['pubSchedules' => function ($query) {

        $query->where('opening_time', '>' ,Carbon::now()) // make sure it's currently open
              ->where('closing_time', '<' ,Carbon::now()) // make sure that it's not finished already
              ->where('week_day', '==' ,Carbon::now()->dayOfWeek) // make sure it's today

    }])->find($id);

  // to get if pub is currently

  if($pub->pubSchedules->count()){
      //
   }

   you can put this code in the model (Pub) and make some changes
   if you already have the object you can do this (Add it to model)

public function isPubOpen()
{
    $this->load(['pubSchedules' => 
        // same code in other method
    ]);

    return (bool) $this->pubSchedules->count();
}

Answer 3

对于小表格，您可以为每个元素调用函数isPubCurrentlyOpen。

为此，您需要更改函数以接收 pub_id 作为参数：

public function isPubCurrentlyOpen($pub_id)
{
    $schedules = Schedule::where([
            ['pub_id', $pub_id ],
            ['week_day', Carbon::now()->dayOfWeek],
    ])->get();

    foreach ($schedules as $schedule){
        $isOpen[] =
            Carbon::now('Europe/Madrid')->between(
                Carbon::now('Europe/Madrid')->setTimeFromTimeString($schedule->opening_time),
                Carbon::now('Europe/Madrid')->setTimeFromTimeString($schedule->closing_time)
            );
    }

    if(in_array(true, $isOpen)){
        return true;
        //return "Pub Opened";
    }

    return false;
    //return "Pub Closed";
}

并查询数据：

if($request->openPubs == 1)
{
   // assuming $pubs is a collection instance
   $pubs = $pubs->filter(function($a){
        return $this->isPubCurrentlyOpen($a->id);
   })
}

Answer 4

Eloquent 中有一个名为 Eager Loading 的功能。 Eloquent ORM 提供了一种简单的语法来查询与此特定 Pub 相关的所有计划，如下所述：

$pubIsOpen= $pub->schedules()
  ->where([
        ['week_day', Carbon::now()->dayOfWeek],
        ['opening_time' , '<' , Carbon::now('Europe/Madrid')],
        ['closing_time' , '>' , Carbon::now('Europe/Madrid')]
  ])
  ->count();
if($openPubCount > 0){
    //PUB is open
}else{
    //PUB is closed
}

Answer 5

如果将来对某人有帮助，我会发布我的解决方案，感谢@apokryfos：

酒馆：

/**
 * @param $pubs
 * @return mixed
 */
public static function isPubCurrentlyOpen($pubs)
{
    $pubs->whereHas( 'pubSchedules', function ($pubs) {
        $pubs->where( 'week_day', Carbon::now()->dayOfWeek )
            ->whereRaw(
                "'" . Carbon::now( 'Europe/Madrid' )->format( "H:i:s" ) . "' BETWEEN opening_time AND closing_time"
            );
    } );

    return $pubs;
}

PubsController：

/**
 * @param GetPubRequest $request
 * @return ApiResponse
 */
public function getPubs(GetPubRequest $request)
{
    $orderBy = 'id';
    $order = 'asc';

    $pubs = Pub::withDistance();

    ............


    if($request->openPubs == 1)
    {
        $pubs = Pub::isPubCurrentlyOpen($pubs);
    }

    return $this->response(PubProfileResource::collection($pubs->orderBy($orderBy, $order)->paginate()));
}