Add correlate parameter

* Add correlate parameter to select_correlated_expression function

CHANGES.rst

@@ -4,6 +4,12 @@ Changelog
 Here you can see the full list of changes between each SQLAlchemy-Utils release.
 
 
+0.30.17 (2015-08-16)
+^^^^^^^^^^^^^^^^^^^^
+
+- Added correlate parameter to select_correlated_expression function
+
+
 0.30.16 (2015-08-04)
 ^^^^^^^^^^^^^^^^^^^^
 

sqlalchemy_utils/__init__.py

@@ -92,4 +92,4 @@ from .types import (  # noqa
     WeekDaysType
 )
 
-__version__ = '0.30.16'
+__version__ = '0.30.17'

sqlalchemy_utils/relationships/__init__.py

@@ -89,7 +89,8 @@ def select_correlated_expression(
     path,
     leaf_model,
     from_obj=None,
-    order_by=None
+    order_by=None,
+    correlate=True
 ):
     relationships = list(reversed(path_to_relationships(path, root_model)))
 
@@ -112,6 +113,8 @@ def select_correlated_expression(
 
     query = query.select_from(join_expr.selectable)
 
-    return query.correlate(
-        from_obj if from_obj is not None else root_model
-    ).where(condition)
+    if correlate:
+        query = query.correlate(
+            from_obj if from_obj is not None else root_model
+        )
+    return query.where(condition)