How to get rank in laravel - laravel

Question

In my Laravel 5.3 app, votes table has a net votes column. I'd like to find the video's rank according to net votes. I'd like to display the rank like below list. I know sql #raw method. but, I want to use Laravel method. because, there are some other tables jointed with this user table and some other shorting also need to be done.
video table:
id | net_votes| video_id |
------ | -------: |:-------: |
1 | 5 | 1 |
2 | 11 | 2 |
3 | 3 | 1 |
4 | 6 | 3 |
5 | 5 | 2 |
I want to get results like this
id | net_votes| rank
------ | -------: |:----:
2 | 11 | 1
4 | 6 | 2
1 | 5 | 3
5 | 5 | 4
3 | 3 | 5
I am using this code now. its working. but I want to use Laravel Eloquent Method.
$score_board_list = DB::select("SELECT *, total, #r:=#r+1 as rank,
#l:=total FROM ( select username, first_name, video_title,
net_votes, sum(net_votes) as total from videos
LEFT JOIN users ON videos.user_id = users.id
LEFT JOIN profile ON users.id = profile.user_id
group by videos.id order by total desc, videos.created_at desc ) totals, (SELECT #r:=0, #l:=NULL) rank");

Answer 1

To do that
Stored your subquery into a variable
$subquery = "(
SELECT username,
first_name,
video_title,
net_votes,
Sum(net_votes) AS total
FROM videos
LEFT JOIN users
ON videos.user_id = users.id
LEFT JOIN profile
ON users.id = profile.user_id
GROUP BY videos.id
ORDER BY total DESC,
videos.created_at DESC ) totals";
then equivalent for
Select * from (subquery)
into Eloquent is
DB::table(DB::raw('subquery'))
then to select a custom column
// for example
->select(DB::raw('#r:=#r+1 as rank'))
So your query builder would be like this
$subquery = "(
SELECT username,
first_name,
video_title,
net_votes,
Sum(net_votes) AS total
FROM videos
LEFT JOIN users
ON videos.user_id = users.id
LEFT JOIN profile
ON users.id = profile.user_id
GROUP BY videos.id
ORDER BY total DESC,
videos.created_at DESC ) totals";
$score_board_list = DB::table(DB::raw($subquery))
->select(
'*',
'total',
DB::raw('#r:=#r+1 as rank'),
DB::raw('#l:=total'))
->get();