[UPD] allow download of file from operation view

views/acc_operation_views.xml

@@ -12,7 +12,14 @@
                     <field name="keys_repartition_ids" mode="tree">
                         <tree create="0" editable="bottom" delete="0">
                             <field name="date_send" readonly="1" />
-                            <field name="filename" readonly="1"/>
+                            <field name="filename" invisible="1" />
+                            <field
+                widget="binary"
+                name="csv_file"
+                filename="filename"
+                readonly="1"
+                string="Fichier chargé"
+              />
                         </tree>
                     </field>
                 <button