Last 6 months number of users graph - Laravel - sql

Question

I want to create a chart. Using the library below.
https://charts.erik.cat/adding_datasets.html#database-eloquent-example-2
Query that dynamically reports the number of users for the last 6 months
(with month rows
Sample:
January = 1,
February = 2,
March = 3
...)
The output I want is:
$user_count_chart = [
"2" => 30,
"3" => 41,
"4" => 50,
"5" => 62,
"6" => 72,
"7" => 150,
];
**
key: month value
value: number of users
**
Schema::create('users', function (Blueprint $table) {
$table->bigIncrements('id');
$table->string('email')->unique();
$table->string('password');
$table->dateTime('email_verified_at')->nullable();
$table->rememberToken();
$table->timestamps();
});

Answer 1

return User::groupBy('date')
->orderBy('date', 'desc')
->take(6)
->get([
DB::raw('MONTH(created_at) as date'),
DB::raw('count(id) as total')
])
->pluck('total', 'date');
One important thing you may need to be careful is, missing months. Let's say if there isn't any user on march then your chart may not work as you expected. Please check this answer to overcome this "possible" problem.

Answer 2

Can use groupBy() function of Laravel Collection.
$user_count_chat = User::all()
->groupBy(function ($user) {
return $user->created_at->month;
})
->map(function ($group) {
return $group->count();
})
EDIT
Be carefull, I think month number is not good enough, Because 2019-Jan and 2020-Jan both has the same month number, but they are not the same, My advice is use 'year-month'