- The :func:`.engine_from_config` function has been improved so that

we will be able to parse dialect-specific arguments from string
configuration dictionaries.  Dialect classes can now provide their
own list of parameter types and string-conversion routines.
The feature is not yet used by the built-in dialects, however.
[ticket:2875]

1 files changed, 7 insertions, 4 deletions

diff --git a/lib/sqlalchemy/engine/__init__.py b/lib/sqlalchemy/engine/__init__.py
index 16d214140..128c4e8f6 100644
--- a/lib/sqlalchemy/engine/__init__.py
+++ b/lib/sqlalchemy/engine/__init__.py
@@ -348,10 +348,13 @@ def engine_from_config(configuration, prefix='sqlalchemy.', **kwargs):
     arguments.
     """
 
-    opts = util._coerce_config(configuration, prefix)
-    opts.update(kwargs)
-    url = opts.pop('url')
-    return create_engine(url, **opts)
+    options = dict((key[len(prefix):], configuration[key])
+                   for key in configuration
+                   if key.startswith(prefix))
+    options['_coerce_config'] = True
+    options.update(kwargs)
+    url = options.pop('url')
+    return create_engine(url, **options)
 
 
 __all__ = (