从具有不同时区的表中获取当前日期记录

Question

这个问题和我的预览有关：How to change time zome in different tables in Laravel

我标记答案后，发现一个问题：

当用户加载页面时，它需要给他当天的记录。

例如从 00:00:00 到现在。

问题是控制器要求数据库从 UTC 时间 00:00:00 开始提供记录，之后我的模型（在上面的链接中）将其解析为本地时间。

这个当地时间是欧洲/索非亚（+3 小时），导致从今天 03:00:00 开始错过 3 条记录。

知道怎么解决吗？

控制器：

      function getdata_chart(Request $request)
      {
        $start_date = date('d-m-Y 00:00:00');
        $end_date = date('d-m-Y 23:59:59');
        if($request->start_date != '' && $request->end_date != '')
        {
          // if user fill dates
          $dateScope = array($request->start_date ." 00:00:00", $request->end_date ." 23:59:59");
        } else {
          // default load page - today
          $dateScope = array($start_date, $end_date);
        };
        $students = MeasCanal::whereBetween('recordtime', $dateScope)
      ->selectRaw('recordtime')
      ->selectRaw('max(formattedvalue) filter (where fullname = \'Данни.Кота\') as iazovir')
      ->selectRaw('max(formattedvalue) filter (where fullname = \'Данни.Температура\') as temperatura350')
      ->where(function ($query) {
        $query->where('fullname', 'like', "Язовир.Данни.Кота")
              ->orWhere('fullname', 'like', "ГСК_11_350.Данни.Температура");
      })
      ->groupBy('recordtime')
      ->orderBy('recordtime')
      ->get();

        return response()->json($students);

      }
    return response()->json($students);
}

型号：

class MeasCanal extends Model
{
  protected $connection = 'MeasCanal';
  protected $table = 'meas_kanal';
  protected $fillable = ['fullname','formattedvalue','recordtime','qualitydesc','statedesc','id'];


  /**
       * Get the user's recordtime.
       *
       * @param  string  $value
       * @return string
       */
      public function getRecordtimeAttribute($value)
      {
              return Carbon::parse($value)->timezone('Europe/Sofia')->toDateTimeString();

      }
}

Answer 1

您必须通过调用 carbon 方法和数组映射函数将用户输入日期从 DB 时区映射到用户时区。并按原样调用查询。

function getdata_chart(Request $request) {
    $start_date = date('d-m-Y 00:00:00');
    $end_date = date('d-m-Y 23:59:59');

    if($request->start_date != '' && $request->end_date != '')
    {
        // if user fill dates
        $dateScope = array($request->start_date ." 00:00:00", $request->end_date ." 23:59:59");
    } else {
        // default load page - today
        $dateScope = array($start_date, $end_date);
    };


    $dbTimeZone = 'Asia/Kolkata'; // update with your db timezone
    $userTimeZone = 'Europe/Sofia';

    $dateScope = array_map(function($date) use ($dbTimeZone, $userTimeZone) {
        return Carbon::createFromFormat('d-m-Y H:i:s', $date, $dbTimeZone)->setTimezone($userTimeZone);
    }, $dateScope);

    $students = MeasCanal::whereBetween('recordtime', $dateScope)
                ->selectRaw('recordtime')
                ->selectRaw('max(formattedvalue) filter (where fullname = \'Данни.Кота\') as iazovir')
                ->selectRaw('max(formattedvalue) filter (where fullname = \'Данни.Температура\') as temperatura350')
                ->where(function ($query) {
                $query->where('fullname', 'like', "Язовир.Данни.Кота")
                      ->orWhere('fullname', 'like', "ГСК_11_350.Данни.Температура");
                })
                ->groupBy('recordtime')
                ->orderBy('recordtime')
                ->get();

    return response()->json($students);

    }
    return response()->json($students);
}

请注意：-如果您还没有使用 carbon til，则将以下行添加到控制器中。

使用碳\碳；

Answer 2

问题是每个函数上的日期分隔符不同导致Unexpected data found.。在编辑他之后，Sachin Kumar 的回答完成了这项工作。感谢那。 只需通过类似的长期解决方案发现问题：

  $start_date0 = date('d-m-Y 00:00:00');
  $end_date0 = date('d-m-Y 23:59:59');

  $start_date = Carbon::createFromFormat('d-m-Y H:i:s', $start_date0, 'Europe/Sofia')->setTimezone('UTC');
  $end_date = Carbon::createFromFormat('d-m-Y H:i:s', $end_date0, 'Europe/Sofia')->setTimezone('UTC');


  if($request->start_date != '' && $request->end_date != '')
  {
    // if user fill dates
    $start_date0 = $request->start_date;
    $end_date0 = $request->end_date;
    $start_date = Carbon::createFromFormat('d/m/Y H:i:s', $start_date0, 'Europe/Sofia')->setTimezone('UTC');
    $end_date = Carbon::createFromFormat('d/m/Y H:i:s', $end_date0, 'Europe/Sofia')->setTimezone('UTC');
    $dateScope = array($start_date, $end_date);
  } else {
    // default load page - today
    $dateScope = array($start_date, $end_date);
  };