safe field for None type

PixxxeL · PixxxeL · commit 052d85f8a4c0 · 2014-06-25T13:05:41.000+05:00
diff --git a/purifier/forms.py b/purifier/forms.py
@@ -19,5 +19,7 @@ def __init__(self, white_list={}, *args, **kwargs):
 
     def clean(self, value):
         value = super(PurifyedCharField, self).clean(value)
-        purifier = HTMLPurifier(self._white_list)
-        return purifier.feed(value)
+        if value:
+            purifier = HTMLPurifier(self._white_list)
+            value = purifier.feed(value)
+        return value
diff --git a/purifier/models.py b/purifier/models.py
@@ -21,8 +21,9 @@ def __init__(self, white_list={}, *args, **kwargs):
 
     def to_python(self, value):
         value = super(PurifyedCharField, self).to_python(value)
-        purifier = HTMLPurifier(self._white_list)
-        value = purifier.feed(value)
+        if value:
+            purifier = HTMLPurifier(self._white_list)
+            value = purifier.feed(value)
         return smart_unicode(value)
 
 
@@ -38,14 +39,16 @@ def __init__(self, white_list={}, *args, **kwargs):
 
     def to_python(self, value):
         value = super(PurifyedTextField, self).to_python(value)
-        purifier = HTMLPurifier(self._white_list)
-        value = purifier.feed(value)
+        if value:
+            purifier = HTMLPurifier(self._white_list)
+            value = purifier.feed(value)
         return smart_unicode(value)
 
     def get_prep_value(self, value):
         value = super(PurifyedTextField, self).get_prep_value(value)
-        purifier = HTMLPurifier(self._white_list)
-        value = purifier.feed(value)
+        if value:
+            purifier = HTMLPurifier(self._white_list)
+            value = purifier.feed(value)
         return value
 
 
