Next dump

app/controllers/unsubscribes_controller.rb

@@ -0,0 +1,15 @@
+class UnsubscribesController < ApplicationController
+  allow_unauthenticated_access
+  before_action :set_subscriber
+
+  def show
+    @subscriber.destroy
+    redirect_to root_path, notice: "Unsubscribed successfully."
+  end
+
+  private
+
+    def set_subscriber
+      @subscriber = Subscriber.find_by_token_for(:unsubscribe, params[:token])
+    end
+end