misc: use lazy mode for global action expression date template (#42672)

tests/test_workflows.py

@@ -40,6 +40,7 @@ from wcs.workflows import (Workflow, WorkflowStatusItem,
         DisplayMessageWorkflowStatusItem,
         AbortActionException, WorkflowCriticalityLevel,
         AttachmentEvolutionPart, WorkflowBackofficeFieldsFormDef,
+        WorkflowVariablesFieldsFormDef,
         perform_items)
 from wcs.wf.aggregation_email import (AggregationEmailWorkflowStatusItem,
         AggregationEmail, send_aggregation_emails)
@@ -3475,6 +3476,22 @@ def test_global_timeouts(two_pubs):
     assert formdef.data_class().get(formdata1.id).get_criticality_level_object().name == 'yellow'
     formdata1.store()
 
+    # django template (from form_option_)
+    workflow.variables_formdef = WorkflowVariablesFieldsFormDef(workflow=workflow)
+    workflow.variables_formdef.fields = [
+            DateField(id='4', label='Date', type='date', varname='date'),
+    ]
+    trigger.anchor = 'template'
+    trigger.anchor_template = '{{ form_option_date }}'
+    workflow.store()
+    formdef.workflow_options = {
+        'date': time.strptime('2015-05-12', '%Y-%m-%d'),
+    }
+    formdef.store()
+    pub.apply_global_action_timeouts()
+    assert formdef.data_class().get(formdata1.id).get_criticality_level_object().name == 'yellow'
+    formdata1.store()
+
 
 def test_global_timeouts_latest_arrival(two_pubs):
     pub = two_pubs

wcs/workflows.py

@@ -1194,7 +1194,7 @@ class WorkflowGlobalActionTimeoutTrigger(WorkflowGlobalActionTrigger):
                     else:
                         break
         elif self.anchor == 'template':
-            variables = get_publisher().substitutions.get_context_variables()
+            variables = get_publisher().substitutions.get_context_variables(mode='lazy')
             anchor_date = Template(self.anchor_template, autoescape=False).render(variables)
         elif self.anchor == 'python':
             variables = get_publisher().substitutions.get_context_variables()