admin: add BackSuccessUrlMixin to redirect to correct url after form edit

passbook/admin/views/applications.py

@@ -9,13 +9,19 @@ from django.utils.translation import gettext as _
 from django.views.generic import ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.core.forms.applications import ApplicationForm
 from passbook.core.models import Application
 from passbook.lib.views import CreateAssignPermView
 
 
-class ApplicationListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class ApplicationListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all applications"""
 
     model = Application
@@ -26,6 +32,7 @@ class ApplicationListView(LoginRequiredMixin, PermissionListMixin, UserPaginateL
 
 class ApplicationCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -42,7 +49,11 @@ class ApplicationCreateView(
 
 
 class ApplicationUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update application"""
 

passbook/admin/views/certificate_key_pair.py

@@ -9,13 +9,19 @@ from django.utils.translation import gettext as _
 from django.views.generic import ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.crypto.forms import CertificateKeyPairForm
 from passbook.crypto.models import CertificateKeyPair
 from passbook.lib.views import CreateAssignPermView
 
 
-class CertificateKeyPairListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class CertificateKeyPairListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all keypairs"""
 
     model = CertificateKeyPair
@@ -26,6 +32,7 @@ class CertificateKeyPairListView(LoginRequiredMixin, PermissionListMixin, UserPa
 
 class CertificateKeyPairCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -42,7 +49,11 @@ class CertificateKeyPairCreateView(
 
 
 class CertificateKeyPairUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update certificatekeypair"""
 

passbook/admin/views/flows.py

@@ -11,7 +11,11 @@ from django.utils.translation import gettext as _
 from django.views.generic import DetailView, FormView, ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.flows.forms import FlowForm, FlowImportForm
 from passbook.flows.models import Flow
 from passbook.flows.planner import PLAN_CONTEXT_PENDING_USER
@@ -23,7 +27,9 @@ from passbook.lib.utils.urls import redirect_with_qs
 from passbook.lib.views import CreateAssignPermView
 
 
-class FlowListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin,  ListView):
+class FlowListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all flows"""
 
     model = Flow
@@ -34,6 +40,7 @@ class FlowListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixi
 
 class FlowCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -50,7 +57,11 @@ class FlowCreateView(
 
 
 class FlowUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update flow"""
 

passbook/admin/views/groups.py

@@ -9,13 +9,19 @@ from django.utils.translation import gettext as _
 from django.views.generic import ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.core.forms.groups import GroupForm
 from passbook.core.models import Group
 from passbook.lib.views import CreateAssignPermView
 
 
-class GroupListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class GroupListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all groups"""
 
     model = Group
@@ -26,6 +32,7 @@ class GroupListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMix
 
 class GroupCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -42,7 +49,11 @@ class GroupCreateView(
 
 
 class GroupUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update group"""
 

passbook/admin/views/outposts.py

@@ -12,13 +12,19 @@ from django.utils.translation import gettext as _
 from django.views.generic import ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.lib.views import CreateAssignPermView
 from passbook.outposts.forms import OutpostForm
 from passbook.outposts.models import Outpost, OutpostConfig
 
 
-class OutpostListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class OutpostListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all outposts"""
 
     model = Outpost
@@ -29,6 +35,7 @@ class OutpostListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListM
 
 class OutpostCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -52,7 +59,11 @@ class OutpostCreateView(
 
 
 class OutpostUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update outpost"""
 

passbook/admin/views/policies.py

@@ -17,16 +17,20 @@ from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
 from passbook.admin.forms.policies import PolicyTestForm
 from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
     DeleteMessageView,
     InheritanceCreateView,
     InheritanceListView,
-    InheritanceUpdateView, UserPaginateListMixin,
+    InheritanceUpdateView,
+    UserPaginateListMixin,
 )
 from passbook.policies.models import Policy, PolicyBinding
 from passbook.policies.process import PolicyProcess, PolicyRequest
 
 
-class PolicyListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView):
+class PolicyListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView
+):
     """Show list of all policies"""
 
     model = Policy
@@ -37,6 +41,7 @@ class PolicyListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMi
 
 class PolicyCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     InheritanceCreateView,
@@ -53,6 +58,7 @@ class PolicyCreateView(
 
 class PolicyUpdateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     PermissionRequiredMixin,
     InheritanceUpdateView,

passbook/admin/views/policies_bindings.py

@@ -11,13 +11,19 @@ from django.views.generic import ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 from guardian.shortcuts import get_objects_for_user
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.lib.views import CreateAssignPermView
 from passbook.policies.forms import PolicyBindingForm
 from passbook.policies.models import PolicyBinding
 
 
-class PolicyBindingListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class PolicyBindingListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all policies"""
 
     model = PolicyBinding
@@ -46,6 +52,7 @@ class PolicyBindingListView(LoginRequiredMixin, PermissionListMixin, UserPaginat
 
 class PolicyBindingCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -62,7 +69,11 @@ class PolicyBindingCreateView(
 
 
 class PolicyBindingUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update policybinding"""
 

passbook/admin/views/property_mapping.py

@@ -4,16 +4,17 @@ from django.contrib.auth.mixins import (
     PermissionRequiredMixin as DjangoPermissionRequiredMixin,
 )
 from django.contrib.messages.views import SuccessMessageMixin
-from django.db.models import QuerySet
 from django.urls import reverse_lazy
 from django.utils.translation import gettext as _
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
 from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
     DeleteMessageView,
     InheritanceCreateView,
     InheritanceListView,
-    InheritanceUpdateView, UserPaginateListMixin,
+    InheritanceUpdateView,
+    UserPaginateListMixin,
 )
 from passbook.core.models import PropertyMapping
 
@@ -31,6 +32,7 @@ class PropertyMappingListView(
 
 class PropertyMappingCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     InheritanceCreateView,
@@ -47,6 +49,7 @@ class PropertyMappingCreateView(
 
 class PropertyMappingUpdateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     PermissionRequiredMixin,
     InheritanceUpdateView,

passbook/admin/views/providers.py

@@ -9,15 +9,19 @@ from django.utils.translation import gettext as _
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
 from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
     DeleteMessageView,
     InheritanceCreateView,
     InheritanceListView,
-    InheritanceUpdateView, UserPaginateListMixin,
+    InheritanceUpdateView,
+    UserPaginateListMixin,
 )
 from passbook.core.models import Provider
 
 
-class ProviderListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView):
+class ProviderListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView
+):
     """Show list of all providers"""
 
     model = Provider
@@ -28,6 +32,7 @@ class ProviderListView(LoginRequiredMixin, PermissionListMixin, UserPaginateList
 
 class ProviderCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     InheritanceCreateView,
@@ -44,6 +49,7 @@ class ProviderCreateView(
 
 class ProviderUpdateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     PermissionRequiredMixin,
     InheritanceUpdateView,

passbook/admin/views/sources.py

@@ -9,15 +9,19 @@ from django.utils.translation import gettext as _
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
 from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
     DeleteMessageView,
     InheritanceCreateView,
     InheritanceListView,
-    InheritanceUpdateView, UserPaginateListMixin,
+    InheritanceUpdateView,
+    UserPaginateListMixin,
 )
 from passbook.core.models import Source
 
 
-class SourceListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView):
+class SourceListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView
+):
     """Show list of all sources"""
 
     model = Source
@@ -28,6 +32,7 @@ class SourceListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMi
 
 class SourceCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     InheritanceCreateView,
@@ -44,6 +49,7 @@ class SourceCreateView(
 
 class SourceUpdateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     PermissionRequiredMixin,
     InheritanceUpdateView,

passbook/admin/views/stages.py

@@ -9,15 +9,19 @@ from django.utils.translation import gettext as _
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
 from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
     DeleteMessageView,
     InheritanceCreateView,
     InheritanceListView,
-    InheritanceUpdateView, UserPaginateListMixin,
+    InheritanceUpdateView,
+    UserPaginateListMixin,
 )
 from passbook.flows.models import Stage
 
 
-class StageListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView):
+class StageListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, InheritanceListView
+):
     """Show list of all stages"""
 
     model = Stage
@@ -28,6 +32,7 @@ class StageListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMix
 
 class StageCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     InheritanceCreateView,
@@ -44,6 +49,7 @@ class StageCreateView(
 
 class StageUpdateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     PermissionRequiredMixin,
     InheritanceUpdateView,

passbook/admin/views/stages_bindings.py

@@ -9,13 +9,19 @@ from django.utils.translation import gettext as _
 from django.views.generic import ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.flows.forms import FlowStageBindingForm
 from passbook.flows.models import FlowStageBinding
 from passbook.lib.views import CreateAssignPermView
 
 
-class StageBindingListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class StageBindingListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all flows"""
 
     model = FlowStageBinding
@@ -26,6 +32,7 @@ class StageBindingListView(LoginRequiredMixin, PermissionListMixin, UserPaginate
 
 class StageBindingCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -42,7 +49,11 @@ class StageBindingCreateView(
 
 
 class StageBindingUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update FlowStageBinding"""
 

passbook/admin/views/stages_invitations.py

@@ -10,14 +10,20 @@ from django.utils.translation import gettext as _
 from django.views.generic import ListView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.lib.views import CreateAssignPermView
 from passbook.stages.invitation.forms import InvitationForm
 from passbook.stages.invitation.models import Invitation
 from passbook.stages.invitation.signals import invitation_created
 
 
-class InvitationListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class InvitationListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all invitations"""
 
     model = Invitation
@@ -28,6 +34,7 @@ class InvitationListView(LoginRequiredMixin, PermissionListMixin, UserPaginateLi
 
 class InvitationCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,

passbook/admin/views/stages_prompts.py

@@ -9,13 +9,19 @@ from django.utils.translation import gettext as _
 from django.views.generic import ListView, UpdateView
 from guardian.mixins import PermissionListMixin, PermissionRequiredMixin
 
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.lib.views import CreateAssignPermView
 from passbook.stages.prompt.forms import PromptAdminForm
 from passbook.stages.prompt.models import Prompt
 
 
-class PromptListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class PromptListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all prompts"""
 
     model = Prompt
@@ -26,6 +32,7 @@ class PromptListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMi
 
 class PromptCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -42,7 +49,11 @@ class PromptCreateView(
 
 
 class PromptUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update prompt"""
 

passbook/admin/views/tokens.py

@@ -9,7 +9,9 @@ from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
 from passbook.core.models import Token
 
 
-class TokenListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class TokenListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all tokens"""
 
     model = Token

passbook/admin/views/users.py

@@ -18,12 +18,18 @@ from guardian.mixins import (
 )
 
 from passbook.admin.forms.users import UserForm
-from passbook.admin.views.utils import DeleteMessageView, UserPaginateListMixin
+from passbook.admin.views.utils import (
+    BackSuccessUrlMixin,
+    DeleteMessageView,
+    UserPaginateListMixin,
+)
 from passbook.core.models import Token, User
 from passbook.lib.views import CreateAssignPermView
 
 
-class UserListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView):
+class UserListView(
+    LoginRequiredMixin, PermissionListMixin, UserPaginateListMixin, ListView
+):
     """Show list of all users"""
 
     model = User
@@ -37,6 +43,7 @@ class UserListView(LoginRequiredMixin, PermissionListMixin, UserPaginateListMixi
 
 class UserCreateView(
     SuccessMessageMixin,
+    BackSuccessUrlMixin,
     LoginRequiredMixin,
     DjangoPermissionRequiredMixin,
     CreateAssignPermView,
@@ -53,7 +60,11 @@ class UserCreateView(
 
 
 class UserUpdateView(
-    SuccessMessageMixin, LoginRequiredMixin, PermissionRequiredMixin, UpdateView
+    SuccessMessageMixin,
+    BackSuccessUrlMixin,
+    LoginRequiredMixin,
+    PermissionRequiredMixin,
+    UpdateView,
 ):
     """Update user"""
 

passbook/admin/views/utils.py

@@ -1,5 +1,6 @@
 """passbook admin util views"""
-from typing import Any, Dict
+from typing import Any, Dict, Optional
+from urllib.parse import urlparse
 
 from django.contrib import messages
 from django.contrib.messages.views import SuccessMessageMixin
@@ -73,10 +74,29 @@ class InheritanceUpdateView(UpdateView):
         )
 
 
+class BackSuccessUrlMixin:
+    """Checks if a relative URL has been given as ?back param, and redirect to it. Otherwise
+    default to self.success_url."""
+
+    request: HttpRequest
+
+    success_url: Optional[str]
+
+    def get_success_url(self) -> str:
+        """get_success_url from FormMixin"""
+        back_param = self.request.GET.get("back")
+        if back_param:
+            if not bool(urlparse(back_param).netloc):
+                return back_param
+        return str(self.success_url)
+
+
 class UserPaginateListMixin:
     """Get paginate_by value from user's attributes, defaulting to 15"""
 
     request: HttpRequest
 
+    # pylint: disable=unused-argument
     def get_paginate_by(self, queryset: QuerySet) -> int:
+        """get_paginate_by Function of ListView"""
         return self.request.user.attributes.get("paginate_by", 15)