AssigneesFilterTest.rb

current_user = User.where(full_name: "Jane Fonda").first
current_user.connections.where("full_name LIKE ?", "%bus%").select(:id, :full_name)
#
# User Load (0.6ms)  
#   SELECT `users`.`id`, `users`.`full_name` FROM `users`
#     INNER JOIN `contacts` ON `users`.`id` = `contacts`.`connection_id`
#     WHERE `contacts`.`user_id` = 980204181
#       AND (full_name LIKE '%bus%')
#
# => #<ActiveRecord::AssociationRelation [
#      #<User id: 550816050, full_name: "all business admin">,
#      #<User id: 796115996, full_name: "all business member">
#    ]>
#