toaster: do not throw exception on misconfigured data

We do not want to throw an exception while handling exceptions
that may print information, so replace the exception throwing
with returning data.

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>

diff --git a/lib/toaster/orm/models.py b/lib/toaster/orm/models.py
index eea98b5e7100138b4f3d68b81128bb7bdefd2c99..625eb1ee85b7fc7c7457cfb38eb1e26f0bcb7e0f 100644 (file)
--- a/lib/toaster/orm/models.py
+++ b/lib/toaster/orm/models.py
@@ -1080,7 +1080,7 @@ class Layer_Version(models.Model):
             return self.branch
         if self.up_branch is not None:
             return self.up_branch.name
-        raise Exception("Cannot determine the vcs_reference for layer version %s" % vars(self))
+        return ("Cannot determine the vcs_reference for layer version %s" % vars(self))
 
     def __unicode__(self):
         return "%d %s (VCS %s, Project %s)" % (self.pk, str(self.layer), self.get_vcs_reference(), self.build.project if self.build is not None else "No project")