Added method to check if a path exists from one node to another

Author: JackAtOmenApps

django_postgresql_dag/models.py

@@ -210,6 +210,12 @@ def path_raw(self, ending_node, directional=True, max_depth=20, **kwargs):
 
             return path
 
+        def path_exists(self, ending_node, **kwargs):
+            try:
+                return len(list(self.path_raw(ending_node, **kwargs))) >= 1
+            except NodeNotReachableException:
+                return False
+
         def path(self, ending_node, **kwargs):
             pks = [item.pk for item in self.path_raw(ending_node, **kwargs)]
             return self.ordered_queryset_from_pks(pks)