Scope with join on :has_many :through association

Question

class Users < ActiveRecord::Base
  has_many :meetings, :through => :meeting_participations
  has_many :meeting_participations
end

class Meetings < ActiveRe         


        

Answer 1

The clean, associations way to do it is:

has_many :visible_meetings, -> { merge(MeetingParticipations.visible) },
  :source => :meeting, :through => :meeting_participations

To put it in more generic terms: if you have a chained has_many association you can scope the intermediate (through) association via merging the scope. Probably requires Rails 4+.

Otherwise this would have to be done via creating a (probably unwanted) intermediate scoped association as seen in @Paul Pettengill's answer.

Answer 2

current_user.meetings.merge(MeetingParticipations.visible)