Fixed defer_except and NumberRange

CHANGES.rst

@@ -4,6 +4,13 @@ Changelog
 Here you can see the full list of changes between each SQLAlchemy-Utils release.
 
 
+0.7.5 (2013-03-26)
+^^^^^^^^^^^^^^^^^^
+
+- Fixed defer_except
+- Better string representations for NumberRange
+
+
 0.7.4 (2013-03-26)
 ^^^^^^^^^^^^^^^^^^
 

setup.py

@@ -24,7 +24,7 @@ class PyTest(Command):
 
 setup(
     name='SQLAlchemy-Utils',
-    version='0.7.4',
+    version='0.7.5',
     url='https://github.com/kvesteri/sqlalchemy-utils',
     license='BSD',
     author='Konsta Vesterinen',

sqlalchemy_utils/functions.py

@@ -1,3 +1,4 @@
+from sqlalchemy.orm import defer
 from sqlalchemy.orm.mapper import Mapper
 from sqlalchemy.orm.query import _ColumnEntity
 from sqlalchemy.orm.properties import ColumnProperty

sqlalchemy_utils/types.py

@@ -88,7 +88,8 @@ class NumberRangeType(types.TypeDecorator):
     impl = NumberRangeRawType
 
     def process_bind_param(self, value, dialect):
-        return str(value)
+        if value:
+            return value.normalized
 
     def process_result_value(self, value, dialect):
         return NumberRange.from_normalized_str(value)
@@ -154,6 +155,10 @@ class NumberRange(object):
                 )
             return cls(min_value, max_value)
 
+    @property
+    def normalized(self):
+        return '[%s, %s]' % (self.min_value, self.max_value)
+
     def __eq__(self, other):
         try:
             return (
@@ -167,7 +172,9 @@ class NumberRange(object):
         return 'NumberRange(%r, %r)' % (self.min_value, self.max_value)
 
     def __str__(self):
-        return '[%s, %s]' % (self.min_value, self.max_value)
+        if self.min_value != self.max_value:
+            return '%s - %s' % (self.min_value, self.max_value)
+        return str(self.min_value)
 
     def __add__(self, other):
         try:

tests/test_number_range.py

@@ -34,7 +34,8 @@ class TestNumberRange(object):
         assert NumberRange(1, 3) == NumberRange(1, 3)
 
     def test_str_representation(self):
-        assert str(NumberRange(1, 3)) == '[1, 3]'
+        assert str(NumberRange(1, 3)) == '1 - 3'
+        assert str(NumberRange(1, 1)) == '1'
 
     def test_raises_exception_for_badly_constructed_range(self):
         with raises(NumberRangeException):
@@ -46,6 +47,6 @@ class TestNumberRange(object):
         assert number_range.max_value == 1
 
     def test_from_normalized_str(self):
-        assert str(NumberRange.from_normalized_str('[1,2]')) == '[1, 2]'
+        assert str(NumberRange.from_normalized_str('[1,2]')) == '1 - 2'
-        assert str(NumberRange.from_normalized_str('[1,3)')) == '[1, 2]'
+        assert str(NumberRange.from_normalized_str('[1,3)')) == '1 - 2'
-        assert str(NumberRange.from_normalized_str('(1,3)')) == '[2, 2]'
+        assert str(NumberRange.from_normalized_str('(1,3)')) == '2'

tests/test_utility_functions.py

@@ -1,5 +1,5 @@
 import sqlalchemy as sa
-from sqlalchemy_utils import escape_like, sort_query
+from sqlalchemy_utils import escape_like, sort_query, defer_except
 from tests import TestCase
 
 
@@ -8,6 +8,13 @@ class TestEscapeLike(TestCase):
         assert escape_like('_*%') == '*_***%'
 
 
+class TestDeferExcept(TestCase):
+    def test_deferred_loads_all_columns_except_the_ones_given(self):
+        query = self.session.query(self.Article)
+        query = defer_except(query, ['id'])
+        assert str(query) == 'SELECT article.id AS article_id \nFROM article'
+
+
 class TestSortQuery(TestCase):
     def test_without_sort_param_returns_the_query_object_untouched(self):
         query = self.session.query(self.Article)