[IMP] ModelConverter

* add generate method to indicate that the converter can produce
  values it can consume

* fix to_url, should return a string

bzr revid: xmo@openerp.com-20131108132135-n80fot7xv6by43dx

openerp/http.py

@@ -859,7 +859,11 @@ class ModelConverter(routing.BaseConverter):
         return request.registry[self.model].browse(request.cr, request.uid, int(value), context=request.context)
 
     def to_url(self, value):
-        return value.id
+        return str(value.id)
+
+    def generate(self):
+        for id in request.registry[self.model].search(request.cr, request.uid, [], context=request.context):
+            yield request.registry[self.model].browse(request.cr, request.uid, id, context=request.context)
 
 class ModelsConverter(routing.BaseConverter):