Add action MembershipApplicationMailer#tracking

app/mailers/application_mailer.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 class ApplicationMailer < ActionMailer::Base
-  default from: 'from@example.com'
   layout 'mailer'
+
+  default from: Devise.mailer_sender
 end

app/mailers/membership_application_mailer.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class MembershipApplicationMailer < ApplicationMailer
+  before_action :set_membership_application
+
+  def tracking
+    mail(
+      to:      @membership_application.email,
+      subject: translate('membership_application_mailer.tracking.subject'),
+    )
+  end
+
+private
+
+  def set_membership_application
+    @membership_application = params[:membership_application]
+  end
+end

app/models/membership_application.rb

@@ -20,4 +20,10 @@ class MembershipApplication < ApplicationRecord
     self.organization_membership = nil if organization_membership.blank?
     self.comment                 = nil if comment.blank?
   end
+
+  after_create do
+    MembershipApplicationMailer.with(
+      membership_application: self,
+    ).tracking.deliver_now
+  end
 end

app/previews/membership_application_preview.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+class MembershipApplicationPreview < ActionMailer::Preview
+  # http://localhost:3000/rails/mailers/membership_application/tracking
+  def tracking
+    membership_application = MembershipApplication.find params[:id]
+
+    MembershipApplicationMailer.with(
+      membership_application: membership_application,
+    ).tracking
+  end
+end

app/views/membership_application_mailer/tracking.html.erb

@@ -0,0 +1,4 @@
+<p><%= translate '.lead_text' %></p>
+
+<%= link_to membership_application_url(@membership_application),
+            membership_application_url(@membership_application) %>

config/application.rb

@@ -36,6 +36,9 @@ module Partynest
     # Fully qualified domain name.
     config.site_domain = 'libertarian-party.com'
 
+    # ActionMailer previews
+    config.action_mailer.preview_path = Rails.root.join('app', 'previews')
+
     # Don't generate system test files.
     config.generators.system_tests = nil
 

config/locales/views/en.yml

@@ -14,6 +14,12 @@ en:
         to browser bookmarks. Also the link to this page was sent to email
         address which you have provided. You will be contacted by provided
         contacts soon.
+  membership_application_mailer:
+    tracking:
+      subject: Your application is being processed
+      lead_text: >
+        You can track the status of your application by the following link.
+        You will be contacted by provided contacts soon.
   passports:
     show:
       confirm: Confirm

config/locales/views/ru.yml

@@ -14,6 +14,13 @@ ru:
         Сохраните её в закладки браузера. Также на указанный вами адрес
         электронной почты была отправлена ссылка на данную страницу.
         В ближайшее время с вами свяжутся по указанным вами контактам.
+  membership_application_mailer:
+    tracking:
+      subject: Ваше заявление в обработке
+      lead_text: >
+        По приведённой ниже ссылке вы можете отслеживать статус вашего
+        заявления. В ближайшее время с вами свяжутся по указанным вами
+        контактам.
   passports:
     show:
       confirm: Подтвердить

spec/mailers/membership_application_spec.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe MembershipApplicationMailer do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/requests/membership_applications/create_spec.rb

@@ -31,6 +31,11 @@ RSpec.describe 'POST /membership_applications' do
       change(Account, :count).from(0).to(1)
   end
 
+  specify do
+    expect { make_request }.to \
+      change(ActionMailer::Base.deliveries, :count).from(0).to(1)
+  end
+
   context 'after request' do
     before { make_request }
 
@@ -48,6 +53,13 @@ RSpec.describe 'POST /membership_applications' do
         country_state: country_state,
       )
     end
+
+    specify do
+      expect(ActionMailer::Base.deliveries.last).to have_attributes(
+        to:      [MembershipApplication.last.email],
+        subject: I18n.t('membership_application_mailer.tracking.subject'),
+      )
+    end
   end
 
   context 'when country state is not specified' do