Fixed #1980, #2155 -- made date, time and datetime html2python methods a bit

more consistent in their return values. All three now return None when the
passed in string cannot be converted to the required object (this is assumed
elsewhere).


git-svn-id: http://code.djangoproject.com/svn/django/trunk@3277 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/forms/__init__.py

@@ -773,6 +773,7 @@ class DatetimeField(TextField):
     def html2python(data):
         "Converts the field into a datetime.datetime object"
         import datetime
+        try:
             date, time = data.split()
             y, m, d = date.split('-')
             timebits = time.split(':')
@@ -782,6 +783,8 @@ class DatetimeField(TextField):
             else:
                 s = 0
             return datetime.datetime(int(y), int(m), int(d), int(h), int(mn), s)
+        except ValueError:
+            return None
     html2python = staticmethod(html2python)
 
 class DateField(TextField):
@@ -806,7 +809,7 @@ class DateField(TextField):
             time_tuple = time.strptime(data, '%Y-%m-%d')
             return datetime.date(*time_tuple[0:3])
         except (ValueError, TypeError):
-            return data
+            return None
     html2python = staticmethod(html2python)
 
 class TimeField(TextField):