an additional setParents() method for concepts and other minor improvements

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2398 fd906abe-77d9-0310-91a1-e0d9ade77398

browser/node.py

@@ -126,6 +126,7 @@ class NodeView(BaseView):
         if target is not None:
             basicView = component.getMultiAdapter((target, self.request), name=viewName)
             # xxx: obsolete when self.targetObject is virtual target:
+            if hasattr(basicView, 'view'):
                 return basicView.view
         return self.page
 
@@ -325,6 +326,7 @@ class NodeView(BaseView):
             basicView = component.getMultiAdapter((obj, self.request))
             if obj == self.targetObject:
                 basicView._viewName = self.context.viewName
+            if hasattr(basicView, 'view'):
                 return basicView.view
 
     @Lazy

concept.py

@@ -217,6 +217,15 @@ class Concept(Contained, Persistent):
     def assignParent(self, concept, predicate=None, order=0, relevance=1.0):
         concept.assignChild(self, predicate, order, relevance)
 
+    def setParents(self, predicate, concepts):
+        existing = self.getParents([predicate])
+        for c in existing:
+            if c not in concepts:
+                self.deassignParent(c, [predicate])
+        for c in concepts:
+            if c not in existing:
+                self.assignParent(c, predicate)
+
     def deassignChild(self, child, predicates=None, order=None):
         registry = component.getUtility(IRelationRegistry)
         for rel in self.getChildRelations(predicates, child):