IgorMarques · lucasbibiano · Oct 27, 2016 · IgorMarques · Oct 27, 2016 · lucasbibiano
diff --git a/app/controllers/subscribers_controller.rb b/app/controllers/subscribers_controller.rb
@@ -17,6 +17,24 @@ def create
     end
   end
 
+  def unsubscribe
+    subscriber = Subscriber.find_by(email: params[:unsubscribe][:email])
+
+    if subscriber
+      UnsubscribeMailSender.call(subscriber)
+      redirect_to new_post_path, notice: 'Check your email to find your unsubscribe url!'
+    else
+      redirect_to new_post_path, notice: 'Email not found!'
+    end
+  end
+
+  def cancel_subscription
+    subscriber = Subscriber.find_by(delete_token: params[:delete_token])
+    subscriber.destroy
+
+    redirect_to new_post_path, notice: 'Subscription canceled!'
+  end
+
   private
 
   def subscriber_params

diff --git a/app/mailers/unsubscribe_mailer.rb b/app/mailers/unsubscribe_mailer.rb
@@ -0,0 +1,9 @@
+class UnsubscribeMailer < ApplicationMailer
+  default from: '[email protected]'
+
+  def unsubscribe_email(subscriber)
+    @subscriber = subscriber
+
+    mail(subject: "Your weekly unsubscribe url", to: @subscriber.email)
+  end
+end
diff --git a/app/services/unsubscribe_mail_sender.rb b/app/services/unsubscribe_mail_sender.rb
@@ -0,0 +1,8 @@
+class UnsubscribeMailSender
+  include Service
+
+  def call(subscriber)
+    subscriber.update_attribute(:delete_token, SecureRandom.hex)
+    UnsubscribeMailer.unsubscribe_email(subscriber).deliver_now
+  end
+end
diff --git a/app/views/posts/new.html.erb b/app/views/posts/new.html.erb
@@ -7,4 +7,13 @@
   <%= link_to new_subscriber_path do %>
     <h2>Not subscribed yet?</h2>
   <% end %>
+  <hr>
+  <hr>
+  <hr>
+
+  <h3>Unsubscribe : (</h2>
+  <%= form_for :unsubscribe, url: unsubscribe_path, method: :delete do |f| %>
+    <%= f.text_field :email, placeholder: 'Your email' %>
+    <%= f.submit 'Unsubscribe' %>
+  <% end %>
 </div>
diff --git a/app/views/unsubscribe_mailer/unsubscribe_email.html.erb b/app/views/unsubscribe_mailer/unsubscribe_email.html.erb
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
+  </head>
+  <body style="font-family: open sans, helvetica neue, helvetica, arial; color: #414040">
+    <div style="text-align: center">
+      <div style="margin-bottom: 2em;
+        border: 1px solid #dedbdb;
+        width: 60%;
+        margin-left: 20%;
+        padding: .5em 1.5em;
+        text-align: left;">
+
+        Unsubscribe url:
+        <%= link_to 'Unsubscribe', cancel_subscription_url(@subscriber.delete_token) %>
+      </div>
+    </div>
+  </body>
+</html>
diff --git a/app/views/unsubscribe_mailer/unsubscribe_email.text.erb b/app/views/unsubscribe_mailer/unsubscribe_email.text.erb
@@ -0,0 +1 @@
+<%= cancel_subscription_url(@subscriber.delete_token) %>
diff --git a/config/environments/development.rb b/config/environments/development.rb
@@ -57,6 +57,7 @@
     Bullet.rails_logger = true
   end
 
+  config.action_mailer.default_url_options = { :host => "http://localhost:3000" }
   config.action_mailer.delivery_method = :smtp
   config.action_mailer.smtp_settings = { address: 'localhost',
                                          port: 1025 }

diff --git a/config/environments/production.rb b/config/environments/production.rb
@@ -92,4 +92,6 @@
     :domain         => 'heroku.com',
     :enable_starttls_auto => true
   }
+
+  config.action_mailer.default_url_options = { :host => "your-weekly-production.herokuapp.com" }
 end
diff --git a/config/routes.rb b/config/routes.rb
@@ -2,5 +2,8 @@
   resources :posts, only: [:new, :create, :index]
   resources :subscribers, only: [:new, :create, :index]
 
+  delete '/subscribers', to: 'subscribers#unsubscribe', as: :unsubscribe
+  get '/cancel_subscription/:delete_token', to: 'subscribers#cancel_subscription', as: :cancel_subscription
+
   root to: 'posts#new'
 end
diff --git a/db/migrate/20161027185334_add_delete_token_to_subscriber.rb b/db/migrate/20161027185334_add_delete_token_to_subscriber.rb
@@ -0,0 +1,5 @@
+class AddDeleteTokenToSubscriber < ActiveRecord::Migration[5.0]
+  def change
+    add_column :subscribers, :delete_token, :string, index: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160804191849) do
+ActiveRecord::Schema.define(version: 20161027185334) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -26,9 +26,10 @@
   end
 
   create_table "subscribers", force: :cascade do |t|
-    t.string   "email",      null: false
-    t.datetime "created_at", null: false
-    t.datetime "updated_at", null: false
+    t.string   "email",        null: false
+    t.datetime "created_at",   null: false
+    t.datetime "updated_at",   null: false
+    t.string   "delete_token"
   end
 
 end
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		<%= cancel_subscription_url(@subscriber.delete_token) %>