Login using api user

app/controllers/registrar/sessions_controller.rb

@@ -1,6 +1,15 @@
 class Registrar::SessionsController < SessionsController
   layout 'registrar'
 
+  def create
+    @user = ApiUser.first if params[:user1]
+
+    return redirect_to :back, alert: 'No user' if @user.blank?
+
+    flash[:notice] = I18n.t('welcome')
+    sign_in_and_redirect @user, event: :authentication
+  end
+
   def login
 
   end

app/models/ability.rb

@@ -11,6 +11,7 @@ class Ability
       @user.roles.each { |role| send(role) } if @user.roles
     when 'ApiUser'
       epp
+      registrar
     end
 
     can :show, :dashboard
@@ -38,6 +39,10 @@ class Ability
   end
   # rubocop: enabled Metrics/CyclomaticComplexity
 
+  def registrar
+    can :manage, Invoice
+  end
+
   def user
     can :show, :dashboard
     can :manage, Invoice

app/views/layouts/registrar.haml

@@ -25,7 +25,11 @@
             - if unstable_env.present?
               .text-center
                 %small{style: 'color: #0074B3;'}= unstable_env
-          - if current_user
+        - if current_user
+          .navbar-collapse.collapse
+            %ul.nav.navbar-nav
+              - if can? :show, Invoice
+                %li= link_to t('invoices'), registrar_invoices_path
             %ul.nav.navbar-nav.navbar-right
               %li= link_to t('log_out', user: current_user), '/logout'