Persist table distributions

app/models/tables_arrangement.rb

@@ -1,2 +1,3 @@
 class TablesArrangement < ApplicationRecord
+  has_many :seats
 end

app/services/tables/distribution.rb

@@ -1,6 +1,6 @@
 module Tables
   class Distribution
-    attr_reader :tables
+    attr_accessor :tables
 
     def initialize(min_per_table:, max_per_table:)
       @min_per_table = min_per_table
@@ -29,6 +29,30 @@ module Tables
       end.join("\n")
     end
 
+    def deep_dup
+      self.class.new(min_per_table: @min_per_table, max_per_table: @max_per_table).tap do |new_distribution|
+        new_distribution.tables = @tables.map(&:dup)
+      end
+    end
+
+    def save!
+      ActiveRecord::Base.transaction do
+        arrangement = TablesArrangement.create!
+
+        records_to_store = []
+
+        tables.each_with_index do |table, table_number|
+          table.each do |person|
+            records_to_store << { guest_id: person.id, tables_arrangement_id: arrangement.id, table_number: }
+          end
+        end
+
+        Seat.insert_all!(records_to_store)
+
+        arrangement.update!(discomfort:)
+      end
+    end
+
     private
 
     def local_discomfort(table)

db/migrate/20240724181756_create_tables_arrangements.rb

@@ -1,6 +1,7 @@
 class CreateTablesArrangements < ActiveRecord::Migration[7.1]
   def change
     create_table :tables_arrangements, id: :uuid do |t|
+      t.integer :discomfort
 
       t.timestamps
     end

db/schema.rb

@@ -46,6 +46,7 @@ ActiveRecord::Schema[7.1].define(version: 2024_07_24_181853) do
   end
 
   create_table "tables_arrangements", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.integer "discomfort"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
   end

lib/tasks/vns.rake

@@ -12,5 +12,9 @@ namespace :vns do
     engine.target_function(&:discomfort)
 
     best_solution = engine.run
+
+    binding.pry
+
+    best_solution.save!
   end
 end