[Fix #3064] Add logo and cancel link on preview

app/controllers/new_administrateur/mail_templates_controller.rb

@@ -4,8 +4,9 @@ module NewAdministrateur
 
     def preview
       @procedure = procedure
-      mail_template = find_mail_template_by_slug(params[:id])
       @dossier = Dossier.new(id: 0)
+      mail_template = find_mail_template_by_slug(params[:id])
+      @logo_url = procedure.logo.url
 
       render(html: sanitize(mail_template.body), layout: 'mailers/notification')
     end

app/mailers/notification_mailer.rb

@@ -39,8 +39,9 @@ class NotificationMailer < ApplicationMailer
     @dossier = dossier
 
     if dossier.procedure.logo?
-      @logo_filename = dossier.procedure.logo.filename
-      attachments.inline[@logo_filename] = dossier.procedure.logo.read
+      logo_filename = dossier.procedure.logo.filename
+      attachments.inline[logo_filename] = dossier.procedure.logo.read
+      @logo_url = attachments[logo_filename].url
     end
 
     mail(subject: subject, to: email) do |format|

app/views/layouts/mailers/notification.html.haml

@@ -1,14 +1,18 @@
-- if @logo_filename.present?
+- if @logo_url.present?
   - content_for :procedure_logo do
     %table{ width: "100%", border: "0", cellspacing: "0", cellpadding: "0" }
       %tr
         %td{ align: "center" }
-          = image_tag attachments[@logo_filename].url, style: "height: 150px;"
+          = image_tag @logo_url, style: "height: 150px;"
 
 - content_for :footer do
+  - if @dossier.present?
+    - messagerie_url = messagerie_dossier_url(@dossier)
+  - else
+    - messagerie_url = "#"
   %strong
     Merci de ne pas répondre à cet email. Pour vous adresser à votre administration, passez directement par votre
     = succeed '.' do
-      = link_to 'messagerie', messagerie_dossier_url(@dossier), target: '_blank', rel: 'noopener'
+      = link_to 'messagerie', messagerie_url, target: '_blank', rel: 'noopener'
 
 = render template: 'layouts/mailers/notifications_layout'