workflows: fix unlinking when there's no request (#76555)

tests/workflow/test_carddata.py

@@ -1742,3 +1742,39 @@ def test_anonymise_action_unlink_user(pub, submitter_is_triggerer):
         pub.get_request().session.is_anonymous_submitter(carddef.data_class().select()[0])
         is submitter_is_triggerer
     )
+
+
+def test_anonymise_action_unlink_user_no_request(pub):
+    pub._request = None
+
+    CardDef.wipe()
+    FormDef.wipe()
+    pub.user_class.wipe()
+
+    user = pub.user_class()
+    user.email = 'test@example.net'
+    user.name_identifiers = ['xyz']
+    user.store()
+
+    wf = Workflow(name='test-unlink-user')
+    wf.possible_status = Workflow.get_default_workflow().possible_status[:]
+    anonymise = wf.possible_status[1].add_action('anonymise', id='_anonymise', prepend=True)
+    anonymise.label = 'Unlink User'
+    anonymise.varname = 'mycard'
+    anonymise.unlink_user = True
+    wf.store()
+
+    carddef = CardDef()
+    carddef.name = 'Person'
+    carddef.workflow_id = wf.id
+    carddef.store()
+    carddef.data_class().wipe()
+
+    carddata = carddef.data_class()()
+    carddata.data = {'0': 'Foo', '1': 'Bar'}
+    carddata.user_id = user.id
+    carddata.just_created()
+    carddata.store()
+
+    carddata.perform_workflow()
+    assert carddef.data_class().select()[0].user is None

wcs/wf/anonymise.py

@@ -33,7 +33,7 @@ class AnonymiseWorkflowStatusItem(WorkflowStatusItem):
 
     def perform(self, formdata):
         if self.unlink_user is True:
-            if formdata.is_submitter(get_request().user):
+            if get_request() and formdata.is_submitter(get_request().user):
                 get_session().mark_anonymous_formdata(formdata)
             formdata.unlink_user()
             formdata.remove_tracking_code()