How can i get all date even dates that don't have a record by eloquent with group by? - laravel

Question

I have a method that get a month parameter to select rows of that month from users table. I want to show count of registered user for a month.
public function registeredUsersDaily($month)
{
$countOfDailyRegisteredUsersForAMonth = User::user()
->where(DB::raw('created_at'), '=', $month)
->groupBy('date')
->orderBy('date')
->get([
DB::raw('DATE(created_at) as date'),
DB::raw('COUNT(*) as count')
]);
dd($countOfDailyRegisteredUsersForAMonth);
}
It return count only for dates that exists in users table, so i want to have zero for dates that don't exists.
|date|count|
| 5 | 10 |
| 15 | 3 |
I want to have a result like this:
|date |count |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 10 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 3 |
....

Answer 1

Please check out like this
$dateValues = array_column($countOfDailyRegisteredUsersForAMonth, "date");
$maxDate = max($dateValues);
$likeYouWant=[];
for ($i = 1; $i <= $maxDate; $i++)
{
$likeYouWant[] = ["date" => $i, "count" => in_array($i, $dateValues) ? $countOfDailyRegisteredUsersForAMonth[array_search($i, $dateValues)]["count"] : 0];
}
print_r($likeYouWant);

Answer 2

If you want default date than you can mention in that migration file or you can also do that in your model from where you can retrieve data when there is no date given by user.
You can also refer this for more
How to pass default values to controller by routing in Laravel 5?

Answer 3

From what I've got from the comments:
I think the best thing here is to count the number of users created each day of the month. This will get you zero's in case no one registered on a given date.
With this, you'd probably loop through the dates checking the total users registered each date.
For instance, let's try to get the users created the last 30 days from now:
$results = [];
$startOfDay = now()->createMidnightDate();
for($i=0; $i<=30; $i++)
{
$total_count = User::whereBetween('created_at', [$startOfDay->subDays($i-1), $startOfDay->subDays($i)])
->count();
array_push($results[ $startOfDay->subDays($i)->format('d')], $total_count);
}
With this I think you can now work with the results from the array.