New proposal method to get users_to_notify.

app/controllers/proposal_notifications_controller.rb

@@ -11,7 +11,7 @@ class ProposalNotificationsController < ApplicationController
     @notification = ProposalNotification.new(proposal_notification_params)
     @proposal = Proposal.find(proposal_notification_params[:proposal_id])
     if @notification.save
-      notification_users.each do |user|
+      @proposal.users_to_notify.each do |user|
         Notification.add(user.id, @notification)
       end
       redirect_to @notification, notice: I18n.t("flash.actions.create.proposal_notification")
@@ -30,8 +30,4 @@ class ProposalNotificationsController < ApplicationController
       params.require(:proposal_notification).permit(:title, :body, :proposal_id)
     end
 
-    def notification_users
-      (@proposal.voters + @proposal.followers).uniq
-    end
-
 end

app/models/proposal.rb

@@ -171,6 +171,10 @@ class Proposal < ActiveRecord::Base
     proposal_notifications
   end
 
+  def users_to_notify
+    (voters + followers).uniq
+  end
+
   protected
 
     def set_responsible_name

app/views/proposal_notifications/new.html.erb

@@ -7,7 +7,7 @@
     <div class="callout primary">
       <p>
         <%= t("proposal_notifications.new.info_about_receivers_html",
-              count: (@proposal.voters + @proposal.followers).uniq.count,
+              count: @proposal.users_to_notify.count, 
               proposal_page: link_to(t("proposal_notifications.new.proposal_page"),
                                      proposal_path(@proposal, anchor: "comments"))).html_safe %>
       </p>