move update_displayed_fields to procedure_presentation

app/controllers/instructeurs/procedures_controller.rb

@@ -138,22 +138,7 @@ module Instructeurs
     end
 
     def update_displayed_fields
-      values = params[:values]
-
-      if values.nil?
-        values = []
-      end
-
-      fields = values.map do |value|
-        find_field(*value.split('/'))
-      end
-
-      procedure_presentation.update(displayed_fields: fields)
-
-      current_sort = procedure_presentation.sort
-      if !values.include?(field_id(current_sort))
-        procedure_presentation.update(sort: Procedure.default_sort)
-      end
+      procedure_presentation.update_displayed_fields(params[:values])
 
       redirect_back(fallback_location: instructeur_procedure_url(procedure))
     end
@@ -270,10 +255,6 @@ module Instructeurs
       @ods_export = Export.find_for_format_and_groupe_instructeurs(:ods, groupe_instructeurs_for_procedure)
     end
 
-    def find_field(table, column)
-      procedure_presentation.fields.find { |c| c['table'] == table && c['column'] == column }
-    end
-
     def assign_to
       current_instructeur.assign_to.joins(:groupe_instructeur).find_by(groupe_instructeurs: { procedure: procedure })
     end

app/models/procedure_presentation.rb

@@ -218,6 +218,20 @@ class ProcedurePresentation < ApplicationRecord
     end
   end
 
+
+  def update_displayed_fields(values)
+    if values.nil?
+      values = []
+    end
+
+    fields = values.map { |value| find_field(*value.split('/')) }
+
+    update!(displayed_fields: fields)
+
+    if !values.include?(field_id(sort))
+      update!(sort: Procedure.default_sort)
+    end
+  end
   private
 
   def field_id(field)