Did you know you can pass a closure in the GroupBy method of a collection? 🤯

CollectionGroupBy.php

<?php

$posts = Post::filter($filters)->get();

$groupBy = $filters['groupBy'] ?? 'week';

$posts->groupBy(function ($post) use ($groupBy) {
    return match ($groupBy) {
        'day' => $post->published_at->format('D d M Y'), 
        // 📅 Group by day, format 'Day Date Month Year'
        'week' => $post->published_at->copy()->startOfWeek()->format('d M Y')
         . ' - ' . $post->published_at->copy()->endOfWeek()->format('d M Y'), 
        // 📆 Group by week, format 'Start Date - End Date'
        'month' => $post->published_at->format('M Y'), 
        // 🗓️ Group by month, format 'Month Year'
        'year' => $post->published_at->format('Y'), 
        // 📆 Group by year, format 'Year'
        'quarter' => $post->published_at->copy()->firstOfQuarter()->format('M')
         . ' - ' . $post->published_at->copy()->lastOfQuarter()->format('M Y'), 
        // 📊 Group by quarter, format 'Start Month - End Month Year'
    };
})

// some examples of outputs...

// quarter
array:2 [▼ // routes\web.php:115
  "Jul - Sep 2023" => Illuminate\Database\Eloquent\Collection {#365 ▶}
  "Apr - Jun 2023" => Illuminate\Database\Eloquent\Collection {#364 ▶}
  "Jan - Mar 2023" => Illuminate\Database\Eloquent\Collection {#363 ▶}
  "Oct - Dec 2022" => Illuminate\Database\Eloquent\Collection {#362 ▶}
]

// year
array:2 [▼ // routes\web.php:115
  "2023" => Illuminate\Database\Eloquent\Collection {#365 ▶}
  "2022" => Illuminate\Database\Eloquent\Collection {#364 ▶}
]

// week
array:2 [▼ // routes\web.php:115
  "01 Jan 2023 - 07 Jan 2023" => Illuminate\Database\Eloquent\Collection {#365 ▶}
  "08 Jan 2023 - 14 Jan 2023" => Illuminate\Database\Eloquent\Collection {#364 ▶}
  "15 Jan 2023 - 21 Jan 2023" => Illuminate\Database\Eloquent\Collection {#363 ▶}
  "22 Jan 2023 - 28 Jan 2023" => Illuminate\Database\Eloquent\Collection {#362 ▶}
]

// month
array:2 [▼ // routes\web.php:115
  "Jan 2023" => Illuminate\Database\Eloquent\Collection {#365 ▶}
  "Dec 2022" => Illuminate\Database\Eloquent\Collection {#364 ▶}
  "Nov 2022" => Illuminate\Database\Eloquent\Collection {#363 ▶}
  "Oct 2022" => Illuminate\Database\Eloquent\Collection {#362 ▶}
]

// day
array:2 [▼ // routes\web.php:115
  "Sun 01 Jan 2023" => Illuminate\Database\Eloquent\Collection {#365 ▶}
  "Sat 31 Dec 2022" => Illuminate\Database\Eloquent\Collection {#364 ▶}
  "Fri 30 Dec 2022" => Illuminate\Database\Eloquent\Collection {#363 ▶}
  "Thu 29 Dec 2022" => Illuminate\Database\Eloquent\Collection {#362 ▶}
]