794 

   795 

   796 def str2set(string_field):

   797   """Clean method for cleaning comma separated strings.

   798 

   799   Obtains the comma separated string from the form and returns it as

   800   a set of strings.

   801   """

   802 

   803   def wrapper(self):

   804     """Decorator wrapper method.

   805     """

   806     cleaned_data = self.cleaned_data

   807 

   808     string_data = cleaned_data.get(string_field)

   809 

   810     list_data = []

   811     for string in string_data.split(','):

   812       string_strip = string.strip()

   813       if string_strip and string_strip not in list_data:

   814         list_data.append(string_strip)

   815 

   816     return list_data

   817 

   818   return wrapper