app/models/school_group_partner.rb
# == Schema Information
#
# Table name: school_group_partners
#
# created_at :datetime not null
# id :bigint(8) not null, primary key
# partner_id :bigint(8)
# position :integer
# school_group_id :bigint(8)
# updated_at :datetime not null
#
# Indexes
#
# index_school_group_partners_on_partner_id (partner_id)
# index_school_group_partners_on_school_group_id (school_group_id)
#
class SchoolGroupPartner < ApplicationRecord
belongs_to :school_group
belongs_to :partner
validates :school_group, :partner, presence: true
end