add guardian email field to the appearance release public signing form

app/controllers/public/appearance_releases_controller.rb

@@ -41,7 +41,7 @@ class Public::AppearanceReleasesController < Public::BaseController
 
   def appearance_release_params
     params.require(:appearance_release).permit(:person_address, :person_first_name, :person_last_name, :person_phone, :person_email, :person_photo,
-                                               :guardian_address, :guardian_first_name, :guardian_last_name, :guardian_phone, :guardian_photo, :minor,
+                                               :guardian_address, :guardian_first_name, :guardian_last_name, :guardian_phone, :guardian_email, :guardian_photo, :minor,
                                                :signature_base64, :person_date_of_birth,
                                                :locale, :contract_template,)
   end

app/models/appearance_release.rb

@@ -39,6 +39,7 @@ class AppearanceRelease < ApplicationRecord
   # These validations apply to releases being signed by a minor
   with_options if: :minor? do
     validates :guardian_first_name, :guardian_last_name, presence: true
+    validates :guardian_email, email: true, allow_blank: true
   end
 
   validates :person_photo, content_type: face_photo_acceptable_content_types

app/views/public/appearance_releases/new.html.erb

@@ -76,6 +76,9 @@
               <%= form.text_field :guardian_last_name, required: @appearance_release.minor?, wrapper_class: "col-sm-3" %>
               <%= form.phone_field :guardian_phone, wrapper_class: "col-sm-6" %>
             </div>
+            <div class="form-row">
+              <%= form.text_field :guardian_email, wrapper_class: "col-sm-6" %>
+            </div>
             <div class="form-row">
               <%= form.text_field :guardian_address, wrapper_class: "col-sm-6" %>
             </div>

db/migrate/20200612121539_add_guardian_email_to_appearance_releases.rb

@@ -0,0 +1,5 @@
+class AddGuardianEmailToAppearanceReleases < ActiveRecord::Migration[6.0]
+  def change
+    add_column :appearance_releases, :guardian_email, :string
+  end
+end