Hi so i am writing down the question again

so i have a 3 models 'User' 'Companion' 'Task'

and

User. has_many: companions, has_many: tasks
Companion: belongs_to: user
Task: belongs_to: user

and the datas what i need is a monthly data of User, and User who has Companions, then finally who has ordered a Task

so i was trying to use this codes

User.group_by_month(:created_at).count

Untill here i was able to have the datas what i was thinking

 User.joins(:companions).uniq.group_by_month(:created_at).count

and i the monthly counted numbers of users who has companions but it doesn't work at all

then i also need to join a 'Task' to find out which user has a companion and also ordered a tasks

so the result what i would like to see is

Count User monthly registered

Aug, 2020 = > 300

Users who has companion

 Aug, 2020 = > 150

Users who has companion and ordered a task

 Aug, 2020 = > 75

I need uniq numbers User who has Companion, and User who has Companion and also Ordered a task