[1.8.x] Added UUIDField.deconstruct()

Backport of 0f54cf28c0 from master

django/db/models/fields/__init__.py

@@ -2374,6 +2374,11 @@ class UUIDField(Field):
         kwargs['max_length'] = 32
         super(UUIDField, self).__init__(**kwargs)
 
+    def deconstruct(self):
+        name, path, args, kwargs = super(UUIDField, self).deconstruct()
+        del kwargs['max_length']
+        return name, path, args, kwargs
+
     def get_internal_type(self):
         return "UUIDField"
 

tests/model_fields/test_uuid.py

@@ -35,6 +35,14 @@ class TestSaveLoad(TestCase):
         self.assertEqual(loaded.field, None)
 
 
+class TestMigrations(TestCase):
+
+    def test_deconstruct(self):
+        field = models.UUIDField()
+        name, path, args, kwargs = field.deconstruct()
+        self.assertEqual(kwargs, {})
+
+
 class TestQuerying(TestCase):
     def setUp(self):
         self.objs = [