app/controllers/guests_controller.rb

@@ -1,3 +1,5 @@
+require 'csv'
+
 class GuestsController < ApplicationController
   before_action :set_guest, only: %i[show edit update destroy]
 
@@ -58,6 +60,20 @@ class GuestsController < ApplicationController
     end
   end
 
+  def import
+    csv = CSV.parse(params[:file].read, headers: true)
+    ActiveRecord::Base.transaction do
+      csv.each do |row|
+        guest = Guest.create!(first_name: row['name'])
+
+        guest.affinity_group_list.add(row['affinity_group'])
+        guest.save!
+      end
+    end
+
+    redirect_to guests_url
+  end
+
   private
 
   # Use callbacks to share common setup or constraints between actions.

app/views/guests/index.html.erb

@@ -29,3 +29,9 @@
 </div>
 
 <%= link_to "New guest", new_guest_path %>
+
+<%= form_with url: import_guests_path, method: :post do |form| %>
+  <%= form.label :file %>
+  <%= form.file_field :file %>
+  <%= form.submit "Import" %>
+<% end %>

config/routes.rb

@@ -1,5 +1,7 @@
 Rails.application.routes.draw do
-  resources :guests
+  resources :guests do
+    post :import, on: :collection
+  end
   resources :expenses
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
 

db/seeds.rb

@@ -28,10 +28,6 @@ Expense.create!(name: 'Transportation', amount: 3000, pricing_type: 'fixed')
 Expense.create!(name: 'Invitations', amount: 200, pricing_type: 'fixed')
 Expense.create!(name: 'Cake', amount: 500, pricing_type: 'fixed')
 
-<<<<<<< HEAD
-
-=======
->>>>>>> 8fd0b7c (Modify seeds file to make sure every guest is part of a group)
 samples = {
   close_family: 10,
   family_1_group_a: 5,