laravel如何按日，月，年显示数据？

Question

我想显示我尝试过的日，月，年的数据，但根本不显示。

public function today()
{
    $videos = Video::whereBetween('created_at', [now(), now()->addDays(7)])
    ->orderBy('created_at')
    ->get()
    ->groupBy(function ($val) {
        return Carbon::parse($val->created_at)->format('d');
    });

    return view('video.today', compact('videos'));
}

可见

@foreach ($videos as $video)
{{ $video->title }}
@endforeach

Answer 1

您在收集上进行->groupBy()，我建议在SQL上进行（MySQL解决方案）：

public function today()
{
    $videos = Video::whereBetween('created_at', [now(), now()->addDays(7)])
    ->orderBy('created_at')
    ->groupBy(\DB::raw('DAY(created_at)')) //YEAR(created_at) //MONTH(created_at)
    ->get();

    return view('video.today', compact('videos'));
}

这将按SQL级的day对视频进行分组。

注意：正如@Jerodev在评论中所说，您要感染的未来视频会将您where更改为：

whereBetween('created_at', [now()->subDays(7), now()])

OR

whereDate('created_at', '>=', now()->subDays(7)->toDateString())
->whereDate('created_at', '<=', now()->toDateString())

这将提取最近7天的视频。

Answer 2

  

尝试一下：

Carbon::parse($request->created_at)->format('d-m-Y');

Answer 3

使用此DECLARE @DateSearch1 DATETIME='2017-03-13' DECLARE @DateSearch2 DATETIME='2017-09-25' SELECT *,DATEDIFF(DAY,r.dat1,r.dat2) daysOfRange FROM ( SELECT BillID , CASE WHEN FromDate<@DateSearch1 THEN @DateSearch1 ELSE FromDate END AS dat1, CASE WHEN ToDate>@DateSearch2 THEN @DateSearch2 ELSE ToDate END AS dat2 FROM Bills WHERE ( FromDate >= @DateSearch1 AND FromDate <= @DateSearch2 ) AND ( ToDate >= @DateSearch1 AND ToDate <= @DateSearch2 ))r 格式

DAY