quixote/form form.ptl,1.4,1.5

Update of /home/cvs/quixote/form
In directory hewson:/tmp/cvs-serv1672

Modified Files:
	form.ptl 
Log Message:
Raise a nicer error message if the widget_type is a string and is not a
registered name.


Index: form.ptl
===================================================================
RCS file: /home/cvs/quixote/form/form.ptl,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -d -r1.4 -r1.5
--- form.ptl	29 Oct 2002 16:44:02 -0000	1.4
+++ form.ptl	1 Nov 2002 20:56:21 -0000	1.5
@@ -491,4 +491,7 @@
 
 def get_widget_class (widget_type):
     global _widget_class
-    return _widget_class.get(widget_type, widget_type)
+    klass = _widget_class.get(widget_type, widget_type)
+    if not callable(klass):
+        raise TypeError, 'widget_type %r is not callable' % widget_type
+    return klass