Refine guest controller

Reviewed-on: #139

app/models/guest.rb

@@ -36,6 +36,9 @@ class Guest < ApplicationRecord
   scope :potential, -> { where.not(status: %i[declined considered]) }
 
   after_save :recalculate_simulations, if: :saved_change_to_status?
+  after_destroy :recalculate_simulations
+
+  has_many :seats, dependent: :delete_all
 
   private
 

config/routes.rb

@@ -4,7 +4,7 @@ Rails.application.routes.draw do
   mount Rswag::Ui::Engine => '/api-docs'
   mount Rswag::Api::Engine => '/api-docs'
   resources :groups, only: :index
-  resources :guests, only: %i[index create update] do
+  resources :guests, only: %i[index create update destroy] do
     post :bulk_update, on: :collection
   end
   resources :expenses, only: %i[index update] do

spec/requests/guests_spec.rb

@@ -78,5 +78,14 @@ RSpec.describe 'guests', type: :request do
       response_422
       response_404
     end
+
+    delete('delete guest') do
+      tags 'Guests'
+      produces 'application/json'
+      parameter name: 'id', in: :path, type: :string, format: :uuid
+
+      response_empty_200
+      response_404
+    end
   end
 end