diff --git a/schema/base.py b/schema/base.py
index 4de7b6b..adb6079 100644
--- a/schema/base.py
+++ b/schema/base.py
@@ -48,6 +48,8 @@ class IRelationSet(IList):
     target_types = Attribute('A list of names that denote types of '
                 'loops objects (typically concept types) that may be used as '
                 'targets for the relations.')
+    selection_view = Attribute('The name of a view that provides a collection '
+                'of candidates to select from, in JSON format.')
 
 
 class Relation(Field):
@@ -75,5 +77,6 @@ class RelationSet(List):
 
     def __init__(self, *args, **kw):
         self.target_types = kw.pop('target_types')
+        self.selection_view = kw.pop('selection_view', None)
         super(RelationSet, self).__init__(*args, **kw)
 
diff --git a/schema/field.py b/schema/field.py
index c9e2fa1..76ff78f 100644
--- a/schema/field.py
+++ b/schema/field.py
@@ -47,7 +47,8 @@ class BaseRelationFieldInstance(object):
 
     @Lazy
     def selection_view(self):
-        return getattr(self.context, 'selection_view', 'listConceptsForComboBox.js')
+        return (getattr(self.context, 'selection_view', None) or
+                                            'listConceptsForComboBox.js')
 
     @Lazy
     def typesParams(self):
diff --git a/search/browser.py b/search/browser.py
index 06867fd..df25d54 100644
--- a/search/browser.py
+++ b/search/browser.py
@@ -89,7 +89,7 @@ class Search(BaseView):
                   'dojo.require("dojox.data.QueryReadStore");')
         cm.register('js-execute', jsCall, jsCall=jsCall)
 
-    def listConcepts(self):
+    def listConcepts(self, filterMethod=None):
         """ Used for dijit.FilteringSelect.
         """
         request = self.request
@@ -113,6 +113,8 @@ class Search(BaseView):
                 for o in result:
                     if o.getLoopsRoot() == self.loopsRoot:
                         adObj = adapted(o, self.languageInfo)
+                        if filterMethod is not None and not filterMethod(adObj):
+                            continue
                         name = self.getRowName(adObj)
                         if title and title.endswith('*'):
                             title = title[:-1]