correction home page bad siret error

app/controllers/dossiers_controller.rb

@@ -27,7 +27,7 @@ class DossiersController < ApplicationController
     redirect_to url_for(controller: :dossiers, action: :show, id: @dossier.id)
 
   rescue RestClient::ResourceNotFound
-    redirect_to url_for(controller: :start, action: :error_siret)
+    redirect_to url_for(controller: :start, action: :error_siret, procedure_id: params['procedure_id'])
   rescue ActiveRecord::RecordNotFound
     redirect_to url_for(controller: :start, action: :error_dossier)
   end

app/controllers/start_controller.rb

@@ -1,7 +1,6 @@
 class StartController < ApplicationController
   def index
-    @procedure_id = params['procedure_id']
-    @procedure = Procedure.find(@procedure_id)
+    get_procedure_infos
 
     if @procedure.nil?
       error_procedure
@@ -15,6 +14,7 @@ class StartController < ApplicationController
   end
 
   def error_siret
+    get_procedure_infos
     flash.now.alert = 'Ce SIRET n\'est pas valide'
     render 'index'
   end
@@ -28,4 +28,10 @@ class StartController < ApplicationController
     flash.now.alert = 'Ce dossier n\'existe pas'
     render 'index'
   end
+
+  private
+
+  def get_procedure_infos
+    @procedure = Procedure.find(params['procedure_id'])
+  end
 end