[IMP] stachechat_mixin: make it possible to ignore some events in the has_allowed_event compute

Author: jdoutreloux

statechart/models/statechart_mixin.py

@@ -315,9 +315,10 @@ class can override the statechart with another one adding new events,
 
     @api.model
     def _get_sc_event_allowed_field_names(self):
+        ignore_for_has_allowed_events = self.env.context.get("ignore_for_has_allowed_events", [])
         event_names = self._statechart.events_for()
         return [
-            _sc_make_event_allowed_field_name(event_name) for event_name in event_names
+            _sc_make_event_allowed_field_name(event_name) for event_name in event_names if event_name not in ignore_for_has_allowed_events
         ]
 
     @api.depends("sc_state")

test_statechart/models/test_statechart.yml

@@ -8,10 +8,17 @@ statechart:
         transitions:
           - event: confirm1
             target: confirmed1
+          - target: canceled
+            event: cancel
       - name: confirmed1
         transitions:
           - target: confirmed2
             guard: o.amount < 100
           - target: confirmed2
             event: confirm2
+          - target: canceled
+            event: cancel
       - name: confirmed2
+          - target: canceled
+            event: cancel
+      - name: canceled

test_statechart/tests/test_basic.py

@@ -37,3 +37,37 @@ def test_automatic_transition(self):
         record.confirm1()
         # small amount, step 2 done automatically
         self.assertScState(record.sc_state, ["confirmed2", "root"])
+
+    def test_get_sc_event_allowed_field_names(self):
+        """
+        Test that we can ignore certain events based on a context
+        key (ignore_for_has_allowed_events)
+        """
+        model = self.env["scobidoo.test.model"]
+        record = model.create({"amount": 200})
+        record.confirm1()
+        self.assertScState(record.sc_state, ["confirmed1", "root"])
+
+        
+        self.assertEqual(record.sc_has_allowed_events, True)
+
+    def test_get_sc_event_allowed_field_names(self):
+        """
+        Test that we can ignore certain events based on a context
+        key (ignore_for_has_allowed_events)
+        """
+        model = self.env["scobidoo.test.model"]
+        record = model.create({"amount": 200})
+        record.confirm1()
+        self.assertScState(record.sc_state, ["confirmed1", "root"])
+
+        # 2 events are allowed: confirmed2 and cancel
+        self.assertEqual(record.sc_has_allowed_events, True)
+
+        # 1 event is allowed: confirmed2
+        record.invalidate_cache()
+        self.assertEqual(record.with_context(ignore_for_has_allowed_events=["cancel"]).sc_has_allowed_events, True)
+
+        # no event allowed
+        record.invalidate_cache()
+        self.assertEqual(record.with_context(ignore_for_has_allowed_events=["cancel", "confirm2"]).sc_has_allowed_events, False)