Fetching a summary grouped by month with Eloquent - php

Question

I have a table called gk and I am currently running two queries. Please have a look at the queries:
Gk::groupBy(DB::raw("MONTH(created_at)"))
->groupBy(DB::raw("YEAR(created_at)"))
->selectRaw('id, user_id, sum(ton) as ton,pl, count(id) as total, sum(w) , created_at')
->with(array('user'=> function($q){
$q->select('id', 'userName', 'profilePic');
}))
->where('user_id', $userData[0]->id)
->get();
This query returns a little summary of every months. As you can I see I am grouping results by months and years. And I have another query which will return all the rows of any given months.
I am running second query like this
$m=Carbon::parse($request->date);
Gk::where('user_id',$request->user_id)->whereRaw(DB::raw("YEAR(created_at)=$m->year"))->whereRaw(DB::raw("MONTH(created_at)=$m->month"))
->orderBy('created_at','desc')
->get();
The second query returns all the rows of any month. I'm executing this query in a foreach loop for all of the months that are returned in the first query.
I am trying to combine this two query into one so that I can get a group of the results by months and years and also all the details of that month.
Any help, suggestions or idea would be extremely helpful.
[Note: For the date in second query, this date is created_at result from the first query.]
Thank you.

Answer 1

The way I read your question is as following: The second query is executed in a loop with results from the first one. Is that right? In my answer I have explained a way to execute the second query just one time instead of in a loop. You'd still have to execute the first query once.
So, I think that you are better of using the Php collection methods:
$results = Gk::where('user_id',$request->user_id)
->orderBy('created_at','desc')
->get()
->groupBy(function (Gk $item) {
return $item->created_at->format('Y-m');
});
The groupBy method has to return an attribute on which you want to group the elements. For this example I think that using a yyyy-mm format will do fine.
Reference: https://laravel.com/docs/5.5/collections#method-groupby
Edit: Maybe you can also get rid of the orderBy method call because you are grouping by afterwards:
$results = Gk::where('user_id',$request->user_id)
->get()
->groupBy(function (Gk $item) {
return $item->created_at->format('Y-m');
});
Edit 2: To combine the information of the two queries, you could do something like the following:
$results = Gk::where('user_id',$request->user_id)
->get()
->groupBy(function (Gk $item) {
return $item->created_at->format('Y-m');
})->map(function(Collection $rows) {
return [
'sum(ton)' => $rows->sum('ton'),
'total' => $rows->count(),
'sum(w)' => $rows->sum('w'),
'rows' => $rows
];
);
Note that I have omitted a few of the selected columns in your first query because they are not unique in the given group by. But feel free to add any logic in the map function. Because we use map() after groupBy, every call of map() will receive a collection of items for one month. You can that use that fabulous collection magic to calculate all values that you need and reduce the number of queries to just one.