Ticket #3420: db.models.loading.diff

models/loading.py

@@ -4 +4 @@
 from django.core.exceptions import ImproperlyConfigured
 import sys
 import os
+import traceback
 
 __all__ = ('get_apps', 'get_app', 'get_models', 'get_model', 'register_models')
 
@@ -29 +30 @@
                 load_app(app_name)
             except Exception, e:
                 # Problem importing the app
-                _app_errors[app_name] = e
+                _app_errors[app_name] = format_exception(e)
     return _app_list
 
+def format_exception(exception):
+    "Adds traceback information to the exception to assist debugging."
+    filename, line_number, function_name, text = traceback.extract_tb(sys.exc_info()[-1])[-1]
+    return "%s\n\tFile %s, line %s, in %s\n\t\t%s" % (exception, filename, line_number, function_name, text)
+
 def get_app(app_label, emptyOK=False):
     "Returns the module containing the models for the given app_label. If the app has no models in it and 'emptyOK' is True, returns None."
     get_apps() # Run get_apps() to populate the _app_list cache. Slightly hackish.