import os import json import logging import pandas as pd from pathlib import Path from jsonschema import validate from smtplib import SMTPException from django_tables2 import SingleTableView from django.conf import settings from django.template.loader import get_template from django.utils.translation import gettext_lazy as _ from django.views.generic.base import TemplateView, View from django.views.generic.edit import ( CreateView, DeleteView, FormView, UpdateView, ) from django.shortcuts import get_object_or_404, redirect from django.core.cache import cache from django.urls import reverse_lazy from django.http import HttpResponse from django.contrib import messages from utils import credtools from idhub_auth.models import User from idhub_auth.forms import ProfileForm from idhub.mixins import AdminView from idhub.email.views import NotifyActivateUserByEmail from idhub.admin.forms import ( ImportForm, MembershipForm, TermsConditionsForm, SchemaForm, UserRolForm, ImportCertificateForm, ) from idhub.admin.tables import ( DashboardTable, UserTable, RolesTable, ServicesTable, CredentialTable, DIDTable, DataTable, TemplateTable ) from idhub.models import ( DID, Event, File_datas, Membership, Rol, Service, Schemas, UserRol, VerificableCredential, ) class TermsAndConditionsView(AdminView, FormView): template_name = "idhub/admin/terms_conditions.html" title = _("GDPR") section = "" subtitle = _('Terms and Conditions') icon = 'bi bi-file-earmark-medical' form_class = TermsConditionsForm success_url = reverse_lazy('idhub:admin_dashboard') def get_form_kwargs(self): kwargs = super().get_form_kwargs() kwargs['user'] = self.request.user kwargs['initial'] = {"accept": self.request.user.accept_gdpr} return kwargs def form_valid(self, form): user = form.save() return super().form_valid(form) class DobleFactorAuthView(AdminView, View): url = reverse_lazy('idhub:admin_dashboard') def get(self, request, *args, **kwargs): self.check_valid_user() if not self.request.session.get("2fauth"): return redirect(self.url) if self.request.session.get("2fauth") == str(kwargs.get("admin2fauth")): self.request.session.pop("2fauth", None) return redirect(self.url) return redirect(reverse_lazy("idhub:login")) class DashboardView(AdminView, SingleTableView): template_name = "idhub/admin/dashboard.html" table_class = DashboardTable title = _('Dashboard') subtitle = _('Events') icon = 'bi bi-bell' section = "Home" model = Event class People(AdminView): title = _("User management") section = "People" class AccessControl(AdminView, TemplateView): title = _("Access control management") section = "AccessControl" class Credentials(AdminView, TemplateView): title = _("Credential management") section = "Credential" class SchemasMix(AdminView, TemplateView): title = _("Template management") section = "Template" class ImportExport(AdminView): title = _("Data file management") section = "ImportExport" class PeopleListView(People, SingleTableView): template_name = "idhub/admin/people.html" subtitle = _('View users') icon = 'bi bi-person' table_class = UserTable model = User def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'users': User.objects.filter(), }) return context def get_queryset(self, **kwargs): queryset = super().get_queryset(**kwargs) return queryset class PeopleView(People, TemplateView): template_name = "idhub/admin/user.html" subtitle = _('User personal information') icon = 'bi bi-person' model = User def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) return super().get(request, *args, **kwargs) def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'object': self.object, }) return context class PeopleActivateView(PeopleView): def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) if self.object == self.request.user: messages.error(self.request, _('It is not possible deactivate your account!')) return redirect('idhub:admin_people', self.object.id) if self.object.is_active: self.object.is_active = False Event.set_EV_USR_DEACTIVATED_BY_ADMIN(self.object) else: self.object.is_active = True Event.set_EV_USR_ACTIVATED_BY_ADMIN(self.object) self.object.save() return redirect('idhub:admin_people', self.object.id) class PeopleDeleteView(PeopleView): def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) if self.object != self.request.user: Event.set_EV_USR_DELETED_BY_ADMIN(self.object) self.object.delete() else: messages.error(self.request, _('It is not possible delete your account!')) return redirect('idhub:admin_people_list') class PeopleEditView(People, FormView): template_name = "idhub/admin/user_edit.html" subtitle = _('Update user') icon = 'bi bi-person' form_class = ProfileForm success_url = reverse_lazy('idhub:admin_people_list') def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.user = get_object_or_404(User, pk=self.pk) return super().get(request, *args, **kwargs) def post(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.user = get_object_or_404(User, pk=self.pk) return super().post(request, *args, **kwargs) def get_form_kwargs(self): kwargs = super().get_form_kwargs() kwargs['instance'] = self.user return kwargs def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'object': self.user, }) return context def form_valid(self, form): user = form.save() messages.success(self.request, _('The account was updated successfully')) Event.set_EV_USR_UPDATED_BY_ADMIN(user) Event.set_EV_USR_UPDATED(user) return super().form_valid(form) class PeopleRegisterView(NotifyActivateUserByEmail, People, CreateView): template_name = "idhub/admin/people_register.html" subtitle = _('Add user') icon = 'bi bi-person' form_class = ProfileForm success_url = reverse_lazy('idhub:admin_people_list') def get_success_url(self): self.success_url = reverse_lazy( 'idhub:admin_people_membership_new', kwargs={"pk": self.object.id} ) return self.success_url def form_valid(self, form): user = form.save() messages.success(self.request, _('The account was created successfully')) Event.set_EV_USR_REGISTERED(user) Event.set_EV_USR_WELCOME(user) if user.is_active: try: self.send_email(user) except SMTPException as e: messages.error(self.request, e) return super().form_valid(form) class PeopleMembershipRegisterView(People, FormView): template_name = "idhub/admin/people_membership_register.html" subtitle = _('Associate a membership to the user') icon = 'bi bi-person' form_class = MembershipForm model = Membership success_url = reverse_lazy('idhub:admin_people_list') def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.user = get_object_or_404(User, pk=self.pk) return super().get(request, *args, **kwargs) def post(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.user = get_object_or_404(User, pk=self.pk) return super().post(request, *args, **kwargs) def get_form(self): form = super().get_form() form.fields['start_date'].widget.input_type = 'date' form.fields['end_date'].widget.input_type = 'date' form.fields['start_date'].required = True return form def get_form_kwargs(self): self.object = self.model(user=self.user) kwargs = super().get_form_kwargs() kwargs['instance'] = self.object return kwargs def form_valid(self, form): form.save() messages.success(self.request, _('Membership created successfully')) return super().form_valid(form) def get_success_url(self): self.success_url = reverse_lazy( 'idhub:admin_people_rol_new', kwargs={"pk": self.user.id} ) return self.success_url class PeopleMembershipEditView(People, FormView): template_name = "idhub/admin/people_membership_register.html" subtitle = _('Associate a membership to the user') icon = 'bi bi-person' form_class = MembershipForm model = Membership success_url = reverse_lazy('idhub:admin_people_list') def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) self.user = self.object.user return super().get(request, *args, **kwargs) def post(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) self.user = self.object.user return super().post(request, *args, **kwargs) def get_form(self): form = super().get_form() form.fields['start_date'].widget.input_type = 'date' form.fields['end_date'].widget.input_type = 'date' form.fields['start_date'].required = True return form def get_form_kwargs(self): kwargs = super().get_form_kwargs() kwargs['instance'] = self.object return kwargs def form_valid(self, form): form.save() messages.success(self.request, _('Membership updated successfully')) return super().form_valid(form) class PeopleMembershipDeleteView(PeopleView): model = Membership def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) if self.object != self.request.user: user = self.object.user self.object.delete() else: messages.error(self.request, _('Is not possible delete your account!')) return redirect('idhub:admin_people_edit', user.id) class PeopleRolRegisterView(People, FormView): template_name = "idhub/admin/people_rol_register.html" subtitle = _('Add a user role to access a service') icon = 'bi bi-person' form_class = UserRolForm model = UserRol def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.user = get_object_or_404(User, pk=self.pk) return super().get(request, *args, **kwargs) def post(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.user = get_object_or_404(User, pk=self.pk) return super().post(request, *args, **kwargs) def get_form_kwargs(self): self.object = self.model(user=self.user) kwargs = super().get_form_kwargs() kwargs['instance'] = self.object return kwargs def form_valid(self, form): form.save() messages.success(self.request, _('Membership created successfully')) return super().form_valid(form) def get_success_url(self): self.success_url = reverse_lazy( 'idhub:admin_people_edit', kwargs={"pk": self.user.id} ) return self.success_url class PeopleRolEditView(People, FormView): template_name = "idhub/admin/people_rol_register.html" subtitle = _('Modify a user role to access a service') icon = 'bi bi-person' form_class = UserRolForm model = UserRol def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) return super().get(request, *args, **kwargs) def post(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) return super().post(request, *args, **kwargs) def get_form_kwargs(self): kwargs = super().get_form_kwargs() kwargs['instance'] = self.object return kwargs def form_valid(self, form): form.save() messages.success(self.request, _('Membership updated successfully')) return super().form_valid(form) def get_success_url(self): self.success_url = reverse_lazy( 'idhub:admin_people_edit', kwargs={"pk": self.object.user.id} ) return self.success_url class PeopleRolDeleteView(PeopleView): model = UserRol def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) user = self.object.user self.object.delete() return redirect('idhub:admin_people_edit', user.id) class RolesView(AccessControl, SingleTableView): template_name = "idhub/admin/roles.html" subtitle = _('Manage roles') table_class = RolesTable icon = '' model = Rol def get_context_data(self, **kwargs): queryset = kwargs.pop('object_list', None) if queryset is None: self.object_list = self.model.objects.all() return super().get_context_data(**kwargs) class RolRegisterView(AccessControl, CreateView): template_name = "idhub/admin/rol_register.html" subtitle = _('Add role') icon = '' model = Rol fields = ('name', "description") success_url = reverse_lazy('idhub:admin_roles') object = None def form_valid(self, form): form.save() messages.success(self.request, _('Role created successfully')) Event.set_EV_ROLE_CREATED_BY_ADMIN() return super().form_valid(form) class RolEditView(AccessControl, UpdateView): template_name = "idhub/admin/rol_register.html" subtitle = _('Edit role') icon = '' model = Rol fields = ('name', "description") success_url = reverse_lazy('idhub:admin_roles') def get_form_kwargs(self): pk = self.kwargs.get('pk') if pk: self.object = get_object_or_404(self.model, pk=pk) kwargs = super().get_form_kwargs() return kwargs def form_valid(self, form): form.save() messages.success(self.request, _('Role updated successfully')) Event.set_EV_ROLE_MODIFIED_BY_ADMIN() return super().form_valid(form) class RolDeleteView(AccessControl): model = Rol def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) self.object.delete() messages.success(self.request, _('Role deleted successfully')) Event.set_EV_ROLE_DELETED_BY_ADMIN() return redirect('idhub:admin_roles') class ServicesView(AccessControl, SingleTableView): template_name = "idhub/admin/services.html" table_class = ServicesTable subtitle = _('Manage services') icon = '' model = Service def get_context_data(self, **kwargs): queryset = kwargs.pop('object_list', None) if queryset is None: self.object_list = self.model.objects.all() return super().get_context_data(**kwargs) class ServiceRegisterView(AccessControl, CreateView): template_name = "idhub/admin/service_register.html" subtitle = _('Add service') icon = '' model = Service fields = ('domain', 'description', 'rol') success_url = reverse_lazy('idhub:admin_services') object = None def get_form(self): form = super().get_form() form.fields['rol'].required = False return form def form_valid(self, form): form.save() messages.success(self.request, _('Service created successfully')) Event.set_EV_SERVICE_CREATED_BY_ADMIN() return super().form_valid(form) class ServiceEditView(AccessControl, UpdateView): template_name = "idhub/admin/service_register.html" subtitle = _('Modify service') icon = '' model = Service fields = ('domain', 'description', 'rol') success_url = reverse_lazy('idhub:admin_services') def get_form_kwargs(self): pk = self.kwargs.get('pk') if pk: self.object = get_object_or_404(self.model, pk=pk) kwargs = super().get_form_kwargs() return kwargs def get_form(self): form = super().get_form() form.fields['rol'].required = False return form def form_valid(self, form): form.save() messages.success(self.request, _('Service updated successfully')) Event.set_EV_SERVICE_MODIFIED_BY_ADMIN() return super().form_valid(form) class ServiceDeleteView(AccessControl): model = Service def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) self.object.delete() messages.success(self.request, _('Service deleted successfully')) Event.set_EV_SERVICE_DELETED_BY_ADMIN() return redirect('idhub:admin_services') class CredentialsView(Credentials, SingleTableView): template_name = "idhub/admin/credentials.html" table_class = CredentialTable subtitle = _('View credentials') icon = '' model = VerificableCredential def get_context_data(self, **kwargs): queryset = kwargs.pop('object_list', None) if queryset is None: self.object_list = self.model.objects.all() return super().get_context_data(**kwargs) class CredentialView(Credentials): template_name = "idhub/admin/issue_credentials.html" subtitle = _('Change credential status') icon = '' model = VerificableCredential def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) return super().get(request, *args, **kwargs) def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'object': self.object, }) return context class CredentialJsonView(Credentials): def get(self, request, *args, **kwargs): self.check_valid_user() pk = kwargs['pk'] self.object = get_object_or_404( VerificableCredential, pk=pk, ) response = HttpResponse(self.object.data, content_type="application/json") response['Content-Disposition'] = 'attachment; filename={}'.format("credential.json") return response class RevokeCredentialsView(Credentials): success_url = reverse_lazy('idhub:admin_credentials') def get(self, request, *args, **kwargs): self.check_valid_user() pk = kwargs['pk'] self.object = get_object_or_404( VerificableCredential, pk=pk, ) if self.object.status == VerificableCredential.Status.ISSUED: self.object.status = VerificableCredential.Status.REVOKED self.object.save() messages.success(self.request, _('Credential revoked successfully')) Event.set_EV_CREDENTIAL_REVOKED_BY_ADMIN(self.object) Event.set_EV_CREDENTIAL_REVOKED(self.object) return redirect(self.success_url) class DeleteCredentialsView(Credentials): success_url = reverse_lazy('idhub:admin_credentials') def get(self, request, *args, **kwargs): self.check_valid_user() pk = kwargs['pk'] self.object = get_object_or_404( VerificableCredential, pk=pk, ) status = [ VerificableCredential.Status.REVOKED, VerificableCredential.Status.ISSUED ] if self.object.status in status: self.object.delete() messages.success(self.request, _('Credential deleted successfully')) Event.set_EV_CREDENTIAL_DELETED(self.object) Event.set_EV_CREDENTIAL_DELETED_BY_ADMIN(self.object) return redirect(self.success_url) class DidsView(Credentials, SingleTableView): template_name = "idhub/admin/dids.html" table_class = DIDTable subtitle = _('Manage identities (DID)') icon = 'bi bi-patch-check-fill' wallet = True model = DID def get_context_data(self, **kwargs): queryset = kwargs.pop('object_list', None) if queryset is None: self.object_list = self.model.objects.all() context = super().get_context_data(**kwargs) context.update({ 'dids': DID.objects.filter(user=self.request.user), }) return context class DidRegisterView(Credentials, CreateView): template_name = "idhub/admin/did_register.html" subtitle = _('Add a new organizational identity (DID)') icon = 'bi bi-patch-check-fill' wallet = True model = DID fields = ('label', 'type') success_url = reverse_lazy('idhub:admin_dids') object = None def form_valid(self, form): form.instance.user = self.request.user form.instance.set_did(cache.get("KEY_DIDS")) form.save() messages.success(self.request, _('DID created successfully')) Event.set_EV_ORG_DID_CREATED_BY_ADMIN(form.instance) return super().form_valid(form) class DidEditView(Credentials, UpdateView): template_name = "idhub/admin/did_register.html" subtitle = _('Organization Identities (DID)') icon = 'bi bi-patch-check-fill' wallet = True model = DID fields = ('label',) success_url = reverse_lazy('idhub:admin_dids') def get(self, request, *args, **kwargs): self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) return super().get(request, *args, **kwargs) def form_valid(self, form): user = form.save() messages.success(self.request, _('DID updated successfully')) return super().form_valid(form) class DidDeleteView(Credentials, DeleteView): subtitle = _('Organization Identities (DID)') icon = 'bi bi-patch-check-fill' wallet = True model = DID success_url = reverse_lazy('idhub:admin_dids') def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(self.model, pk=self.pk) Event.set_EV_ORG_DID_DELETED_BY_ADMIN(self.object) self.object.delete() messages.success(self.request, _('DID delete successfully')) return redirect(self.success_url) class WalletCredentialsView(Credentials): template_name = "idhub/admin/wallet_credentials.html" subtitle = _('View org. credentials') icon = 'bi bi-patch-check-fill' wallet = True class WalletConfigIssuesView(Credentials, FormView): template_name = "idhub/admin/wallet_issues.html" subtitle = _('Configure credential issuance') icon = 'bi bi-patch-check-fill' wallet = True form_class = ImportCertificateForm success_url = reverse_lazy('idhub:admin_dids') def get_form_kwargs(self): kwargs = super().get_form_kwargs() kwargs['user'] = self.request.user return kwargs def form_valid(self, form): cred = form.save() if cred: messages.success(self.request, _("The credential was imported successfully!")) Event.set_EV_ORG_DID_CREATED_BY_ADMIN(cred) else: messages.error(self.request, _("Error importing the credential!")) return super().form_valid(form) class SchemasView(SchemasMix, SingleTableView): template_name = "idhub/admin/schemas.html" table_class = TemplateTable subtitle = _('View credential templates') icon = '' model = Schemas def get_context_data(self, **kwargs): queryset = kwargs.pop('object_list', None) if queryset is None: self.object_list = self.model.objects.all() return super().get_context_data(**kwargs) class SchemasDeleteView(SchemasMix): def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(Schemas, pk=self.pk) self.object.delete() return redirect('idhub:admin_schemas') class SchemasDownloadView(SchemasMix): def get(self, request, *args, **kwargs): self.check_valid_user() self.pk = kwargs['pk'] self.object = get_object_or_404(Schemas, pk=self.pk) response = HttpResponse(self.object.data, content_type="application/json") response['Content-Disposition'] = 'inline; filename={}'.format(self.object.file_schema) return response class SchemasNewView(SchemasMix): template_name = "idhub/admin/schemas_new.html" subtitle = _('Upload template') icon = '' success_url = reverse_lazy('idhub:admin_schemas') def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'form': SchemaForm(), }) return context def post(self, request, *args, **kwargs): form = SchemaForm(request.POST, request.FILES) if form.is_valid(): schema = self.handle_uploaded_file() if not schema: messages.error(request, _("There are some errors in the file")) return super().get(request, *args, **kwargs) return redirect(self.success_url) else: return super().get(request, *args, **kwargs) return super().post(request, *args, **kwargs) def handle_uploaded_file(self): f = self.request.FILES.get('file_template') if not f: return file_name = f.name if Schemas.objects.filter(file_schema=file_name).exists(): messages.error(self.request, _("This template already exists!")) return try: data = f.read().decode('utf-8') ldata = json.loads(data) assert credtools.validate_schema(ldata) name = ldata.get('name') assert name except Exception: messages.error(self.request, _('This is not a valid schema!')) return schema = Schemas.objects.create(file_schema=file_name, data=data, type=name) schema.save() return schema class SchemasImportView(SchemasMix): template_name = "idhub/admin/schemas_import.html" subtitle = _('Import template') icon = '' def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'schemas': self.get_schemas(), }) return context def get_schemas(self): schemas_files = os.listdir(settings.SCHEMAS_DIR) schemas = [x for x in schemas_files if not Schemas.objects.filter(file_schema=x).exists()] return schemas class SchemasImportAddView(SchemasMix): def get(self, request, *args, **kwargs): self.check_valid_user() file_name = kwargs['file_schema'] schemas_files = os.listdir(settings.SCHEMAS_DIR) if file_name not in schemas_files: messages.error(self.request, f"The schema {file_name} not exist!") return redirect('idhub:admin_schemas_import') schema = self.create_schema(file_name) if schema: messages.success(self.request, _("The schema was added sucessfully")) return redirect('idhub:admin_schemas') def create_schema(self, file_name): data = self.open_file(file_name) try: ldata = json.loads(data) assert credtools.validate_schema(ldata) name = ldata.get('name') title = ldata.get('title') assert name assert title except Exception: messages.error(self.request, _('This is not a valid schema!')) return _name = json.dumps(ldata.get('name', '')) _description = json.dumps(ldata.get('description', '')) schema = Schemas.objects.create( file_schema=file_name, data=data, type=title, _name=_name, _description=_description, # template_description=_description template_description=self.get_description() ) schema.save() return schema def open_file(self, file_name): data = '' filename = Path(settings.SCHEMAS_DIR).joinpath(file_name) with filename.open() as schema_file: data = schema_file.read() return data def get_template_description(self): context = {} template_name = 'credentials/{}'.format( self.schema.file_schema ) tmpl = get_template(template_name) return tmpl.render(context) def get_description(self): for des in json.loads(self.get_template_description()).get('description', []): if settings.LANGUAGE_CODE == des.get('lang'): return des.get('value', '') return '' class ImportView(ImportExport, SingleTableView): template_name = "idhub/admin/import.html" table_class = DataTable subtitle = _('Import data') icon = '' model = File_datas def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'dates': File_datas.objects, }) return context class ImportStep2View(ImportExport, TemplateView): template_name = "idhub/admin/import_step2.html" subtitle = _('Import') icon = '' def get_context_data(self, **kwargs): context = super().get_context_data(**kwargs) context.update({ 'schemas': Schemas.objects, }) return context class ImportAddView(NotifyActivateUserByEmail, ImportExport, FormView): template_name = "idhub/admin/import_add.html" subtitle = _('Import') icon = '' form_class = ImportForm success_url = reverse_lazy('idhub:admin_import') def get_form_kwargs(self): kwargs = super().get_form_kwargs() kwargs['user'] = self.request.user return kwargs def form_valid(self, form): creds = form.save() if creds: messages.success(self.request, _("The file was imported successfully!")) for cred in creds: Event.set_EV_CREDENTIAL_ENABLED(cred) Event.set_EV_CREDENTIAL_CAN_BE_REQUESTED(cred) else: messages.error(self.request, _("Error importing the file!")) for user in form.users: try: self.send_email(user) except SMTPException as e: messages.error(self.request, e) return super().form_valid(form)