app/controllers/guests_controller.rb

@@ -9,7 +9,7 @@ class GuestsController < ApplicationController
     render json: Guest.includes(:group)
                       .left_joins(:group)
                       .order('groups.name' => :asc, name: :asc)
-                      .as_json(only: %i[id name status], include: { group: { only: %i[id name] } })
+                      .as_json(only: %i[id name status invitation_id], include: { group: { only: %i[id name] } })
   end
 
   def create

db/seeds.rb

@@ -60,18 +60,29 @@ ActsAsTenant.with_tenant(wedding) do
 
   groups = Group.all
 
-  invitations = ([{}] * (NUMBER_OF_GUESTS * 0.8)).then { Invitation.insert_all!(it) }.rows.flatten
-
   NUMBER_OF_GUESTS.times.map do |i|
     {
       name: Faker::Name.name,
       phone: Faker::PhoneNumber.cell_phone,
       group_id: groups.sample.id,
       status: Guest.statuses.keys.sample,
-      invitation_id: invitations[i]
     }
   end.then { Guest.insert_all!(it) }
 
+  Group.includes(:guests).each do |group|
+    guests = group.guests.potential.to_a
+
+    while guests.any?
+      invitation = Invitation.create!
+
+      guests.shift(rand(1..3)).each do |guest|
+        guest.update!(invitation:)
+      end
+    end
+  end
+
+  # TODO: Clean up invitations with no guests
+
   ActiveJob.perform_all_later(3.times.map { TableSimulatorJob.new(wedding.id) })
 
   "red".dup.paint.palette.triad(as: :hex).zip(Group.roots).each { |(color, group)| group.update!(color: color.paint.desaturate(40)) }