had a problem with postgres hstore. return string convertation back. 1.4.3

Author: raagin

setup.py

@@ -5,7 +5,7 @@
 
 setuptools.setup(
     name="django-streamfield",
-    version="1.4.2",
+    version="1.4.3",
     author="Yury Lapshinov",
     author_email="y.raagin@gmail.com",
     description="StreamField for native Django Admin or with Grappelli",

streamfield/__init__.py

@@ -1,2 +1,2 @@
 name = "streamfield"
-VERSION = '1.4.2'
+VERSION = '1.4.3'

streamfield/fields.py

@@ -82,9 +82,7 @@ def to_python(self, value):
         return StreamObject(value, self.model_list)
 
     def get_prep_value(self, value):
-        if not value or isinstance(value, str):
-            return value
-        return value.value
+        return json.dumps(str(value))
 
     def formfield(self, **kwargs):
         widget_class = kwargs.get('widget', StreamFieldWidget)