[Fix #3064] Add a preview button for state notifications emails

app/controllers/new_administrateur/mail_templates_controller.rb

@@ -0,0 +1,33 @@
+module NewAdministrateur
+  class MailTemplatesController < AdministrateurController
+    include ActionView::Helpers::SanitizeHelper
+
+    def preview
+      @procedure = procedure
+      mail_template = find_mail_template_by_slug(params[:id])
+      @dossier = Dossier.new(id: 0)
+
+      render(html: sanitize(mail_template.body), layout: 'mailers/notification')
+    end
+
+    private
+
+    def procedure
+      @procedure = current_administrateur.procedures.find(params[:procedure_id])
+    end
+
+    def mail_templates
+      [
+        @procedure.initiated_mail_template,
+        @procedure.received_mail_template,
+        @procedure.closed_mail_template,
+        @procedure.refused_mail_template,
+        @procedure.without_continuation_mail_template
+      ]
+    end
+
+    def find_mail_template_by_slug(slug)
+      mail_templates.find { |template| template.class.const_get(:SLUG) == slug }
+    end
+  end
+end

app/views/admin/mail_templates/edit.html.haml

@@ -15,6 +15,7 @@
     .text-right
       = link_to "Annuler", admin_procedure_mail_templates_path(@procedure), class: "btn btn-default"
       = f.button :submit, 'Mettre à jour', class: "btn-success"
+      = link_to "Prévisualiser", preview_procedure_mail_template_path(@procedure, @mail_template.class.const_get(:SLUG)), class: "btn btn-primary", target: "_blank"
 
   .row
     .col-md-12

config/routes.rb

@@ -378,6 +378,10 @@ Rails.application.routes.draw do
           patch :move
         end
       end
+
+      resources :mail_templates, only: [] do
+        get 'preview', on: :member
+      end
     end
 
     resources :services, except: [:show] do

spec/views/admin/mail_templates/edit.html.haml_spec.rb

@@ -10,6 +10,7 @@ describe 'admin/mail_templates/edit.html.haml', type: :view do
     allow(view).to receive(:admin_procedure_mail_templates_path).and_return("/toto")
 
     assign(:mail_template, mail_template)
+    assign(:procedure, procedure)
   end
 
   context "Champs are listed in the page" do