Fill in missing dates in Laravel Eloquent query - php

Question

I have a query that is pulling my data from the table based on the created_at column. I am trying to fill in the missing months for the year. So for example, I have data for February, but thats it. How Do i fill in an amount of 0 for January then March-December?
My query to pull out based on the full month name is as follows
$servers = Stat::where('type','servers')->orderBy('created_at', 'asc')->whereYear('created_at', '=', date("Y"))
->select(DB::raw("SUM(amount) as total"))
->get()
->groupBy(function($val) {
return Carbon::parse($val->created_at)->format('F');
});
In this case, I get my February and the total amount. I'd like the rest of the amounts that don't exist to be 0, or fill in the correct info if it exists later in the year.

Answer 1

You are using sum() for the whole year, and using groupBy method on collection, so there is only one month.
You need to group by month like this:
$servers = Stat::where('type','servers')
->orderBy('created_at', 'asc')
->whereYear('created_at', '=', date("Y"))
->groupBy(DB::raw("MONTH(created_at)"))
->selectRaw("SUM(amount) as total, create_at")
->get()
->groupBy(function($val) {
return $val->created_at->format('F');
});
and you can use CarbonPeriod to create an initial month array, and then merge to the servers:
$all_month = array();
$period = \Carbon\CarbonPeriod::create('2020-01-01', '1 month', '2021-12-31');
foreach ($period as $p) {
$m = $p->format('F');
if (isset($servers[$m])) {
$all_month []= [$m => $servers[$m]->first()->total];
} else {
$all_month []= [$m => 0];
}
}