How to create three objects/records using one form? And how to show validation errors for them?

Rails
1

I want to create a form which sends email to each recipient and then
create
new record in free_registration_coupons table.

I need validation of email for this form.

[image: enter image description here]

Model FreeRegistrationCoupon: recipient_email, token, sender_id

For now i have this:

class FreeRegistrationCouponsController < ApplicationController
def send_invitations
emails = [params[:recipient_email_1], params[:recipient_email_2],
params[:recipient_email_3]]
emails.reject!{ |e| e.eql?("") }

if emails.present?
  emails.each do |e|
    FreeRegistrationCoupon.create(:recipient_email => e, :sender_id

=> current_user.id)
#MAILER
end
redirect_to root_path, :notice => “You just send #{emails.size}
invitations!”
else
redirect_to(:back)
end
end
end

class FreeRegistrationCoupon < ActiveRecord::Base
before_save :generate_token

attr_accessor :recipient_email, :sender_id
validates :recipient_email, :presence => true, :email => true

def generate_token
self.token = SecureRandom.hex
end
end

This is form which is in other controller CarsController#confirm:

<%= form_tag :controller => ‘free_registration_coupons’, :action =>
“send_invitations” do %>

<%= label_tag :recipient_email_1 %>
<%= text_field_tag :recipient_email_1 %>
<%= label_tag :recipient_email_2 %>
<%= text_field_tag :recipient_email_2 %>
<%= label_tag :recipient_email_3 %>
<%= text_field_tag :recipient_email_3 %>
<%= submit_tag %>
<% end %>