admin.py 文件源码

def run_test(self, request, object_id=None):
        """
        Takes an HttpRequest with data from a ConfigToolForm and the
        object id for a Model instance. Creates a temporary version
        of the Model instance using the form data and returns a
        JsonResponse with the result of the configuration test.
        """
        try:
            with transaction.atomic():

                forms_are_valid = True
                form = self._create_form_instance(request, object_id)

                if form.is_valid():
                    instance = form.save()

                    # pass the parent model instance to the formsets to create
                    # related instances
                    formsets = self._create_formset_instances(request, instance)

                    if self._formsets_are_valid(formsets):
                        for formset in formsets:
                            formset.save()

                        # all models are now saved, so get the test result
                        result = self._get_result(form, instance)
                    else:
                        forms_are_valid = False
                else:
                    formsets = []
                    forms_are_valid = False

                if not forms_are_valid:
                    result = self._format_errors(form, formsets)

                # rollback the database when exiting the atomic block
                transaction.set_rollback(True)

        except IntegrityError as error:
            LOGGER.error('An error occurred while creating a test instance: %s', request)
            result = 'Could not create an object for testing: %s' % error

        except ValidationError as error:
            LOGGER.error('An error occurred while initializing a config test: %s', request)
            result = 'A validation error occurred: %s' % error

        return JsonResponse({'result': result})