Show only mission correct for student phase, add only one preference per week

cntmanage/flightslot/admins/weekpref_adm.py

@@ -15,7 +15,7 @@ from .training_adm import TrainingInLIne
 from .hourbuilding_adm import HourBuildingInLine
 
 from ..custom.colortag import course_color
-from ..custom.student_permissions import has_edit_permission
+from ..custom.student_permissions import has_edit_permission, has_week_add_permission
 from ..actions.exportweek import export_selected
 
 from datetime import date
@@ -93,7 +93,7 @@ class WeekPreferenceAdmin(nested_admin.NestedPolymorphicModelAdmin):
     
     # If user is a student deny edit permission for week past the current one
     def has_add_permission(self, request: HttpRequest, obj: WeekPreference | None = None) -> bool:
-        return not obj and self.has_change_permission(request, obj)
+        return has_week_add_permission(request=request) and has_edit_permission(request=request, obj=obj)
     
     # If user is a student deny edit permission for week past the current one
     def has_delete_permission(self, request: HttpRequest, obj: WeekPreference | None = None)-> bool:
@@ -110,7 +110,7 @@ class WeekPreferenceAdmin(nested_admin.NestedPolymorphicModelAdmin):
                 extra_context["show_delete"] = False
         return super().changeform_view(request, object_id, form_url, extra_context)
     
-    def save_model(self, request: HttpRequest, obj, form: Form, change: bool):
+    def save_model(self, request: HttpRequest, obj: WeekPreference, form: Form, change: bool):
         # Imposta automaticamente lo studente se non è già valorizzato
         if hasattr(request.user, "student") and not obj.student_id:
             obj.student = request.user.student