From 7a1c885fcd652cfaa6cf3f4fce218cc0ca71a204 Mon Sep 17 00:00:00 2001
From: helmutm <helmutm@fd906abe-77d9-0310-91a1-e0d9ade77398>
Date: Thu, 14 Feb 2008 13:22:54 +0000
Subject: [PATCH] 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 | 6 ++++--
 concept.py      | 9 +++++++++
 tests/setup.py  | 2 +-
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/browser/node.py b/browser/node.py
index 021d0d5..19ac927 100644
--- a/browser/node.py
+++ b/browser/node.py
@@ -126,7 +126,8 @@ class NodeView(BaseView):
         if target is not None:
             basicView = component.getMultiAdapter((target, self.request), name=viewName)
             # xxx: obsolete when self.targetObject is virtual target:
-            return basicView.view
+            if hasattr(basicView, 'view'):
+                return basicView.view
         return self.page
 
     @Lazy
@@ -325,7 +326,8 @@ class NodeView(BaseView):
             basicView = component.getMultiAdapter((obj, self.request))
             if obj == self.targetObject:
                 basicView._viewName = self.context.viewName
-            return basicView.view
+            if hasattr(basicView, 'view'):
+                return basicView.view
 
     @Lazy
     def targetId(self):
diff --git a/concept.py b/concept.py
index 558bc29..96d3351 100644
--- a/concept.py
+++ b/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):
diff --git a/tests/setup.py b/tests/setup.py
index f0eb57c..dcac7fc 100644
--- a/tests/setup.py
+++ b/tests/setup.py
@@ -133,7 +133,7 @@ class TestSite(object):
         component.provideAdapter(NoteSchemaFactory)
 
         component.provideAdapter(Controller, (Interface, IBrowserRequest),
-                            IBrowserView, name='controller')
+                                 IBrowserView, name='controller')
         component.provideAdapter(MemberInfoProvider,
                                  (ILoopsObject, IBrowserRequest))