If we don't call #to_a, we're relying on the members already being loaded from
elsewhere. Otherwise we'll do a separate query for each user:
[1] pry(main)> Project.first.team.members.include?(User.first)
Project Load (0.7ms) SELECT "projects".* FROM "projects" ORDER BY "projects"."id" ASC LIMIT 1
↳ (pry):3
User Load (1.8ms) SELECT "users".* FROM "users" ORDER BY "users"."id" ASC LIMIT 1
↳ (pry):3
User Exists (0.6ms) SELECT 1 AS one FROM "users" INNER JOIN "project_authorizations" ON "users"."id" = "project_authorizations"."user_id" WHERE "project_authorizations"."project_id" = $1 AND "users"."id" = $2 LIMIT 1 [["project_id", 1], ["id", 1]]
↳ (pry):3
=> true
[2] pry(main)> Project.first.team.members.to_a.include?(User.first)
Project Load (12.8ms) SELECT "projects".* FROM "projects" ORDER BY "projects"."id" ASC LIMIT 1
↳ (pry):1
User Load (9.6ms) SELECT "users".* FROM "users" INNER JOIN "project_authorizations" ON "users"."id" = "project_authorizations"."user_id" WHERE "project_authorizations"."project_id" = $1 [["project_id", 1]]
↳ (pry):1
User Load (0.6ms) SELECT "users".* FROM "users" ORDER BY "users"."id" ASC LIMIT 1
↳ (pry):1
=> true
28e6af88aa