Laravel Carbon Group by Month - php

Question

Can anyone see what I'm doing wrong?
I'm trying to output all the months but group them so they are unique.
$months = NewsItem::select(DB::raw('MONTH("created_at") as month'))->groupBy('month')->get();
return $months;
I'm getting the following back
{"month":null}
In my database I have five news articles all created_at 05/01/2017 so it's right that I only get one response but I'm not getting the number of the month back?

Answer 1

You can use groupBy() method with closure:
$months = NewsItem::groupBy(function($d) {
return Carbon::parse($d->created_at)->format('m');
})->get();
Or get data first and then use groupBy() on the Eloquent collection:
$months = NewsItem::get()->groupBy(function($d) {
return Carbon::parse($d->created_at)->format('m');
});

Answer 2

Why do you need the group by clause in your usecase?
You are not fetching any additional data for which a group by is required, you just want to have a list of distinct months, so use distinct.
$months = NewsItem::selectRaw("MONTH(created_at) as month")->distinct()->get();
Also looking at the solution provided by Alexey, you'll need to fetch the entire dataset from the DB, which is highly inefficient looking at what you are trying to do. A distinct() query would be much faster than a select * and group the results in PHP.
Edit:
Little sidenote here, the reason you get null returned as value is because you use a string in the MONTH() function instead of the actual field.

Answer 3

You can simply using groupby and mysql MONTH.
$months = NewsItem::groupby(\DB::raw('MONTH(created_at) as month'))->get();

Answer 4

You can do it this way:
NewsItem::get(["*",\DB::raw('MONTH(created_at) as month')])->groupBy('month');

Answer 5

To get earnings on monthly basis you can try the below code:-
$getMonthlyReport = OrderMaster::select(DB::raw("sum(order_total_amt) as earnings,date_format(order_date, '%Y-%m') as YearMonth"))
->groupBy('order_date')
->get();

Answer 6

$month = NewsItem::select(
DB::raw('DATE_FORMAT(created_at, "%M") as month'))
->groupBy('month')
->get();