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−#!/usr/bin/python2.5
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−#
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−# Copyright 2008 the Melange authors.
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−#
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−# Licensed under the Apache License, Version 2.0 (the "License");
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−# you may not use this file except in compliance with the License.
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−# You may obtain a copy of the License at
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−#
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−#   http://www.apache.org/licenses/LICENSE-2.0
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−#
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−# Unless required by applicable law or agreed to in writing, software
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−# distributed under the License is distributed on an "AS IS" BASIS,
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−# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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−# See the License for the specific language governing permissions and
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−# limitations under the License.
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−
+
−"""Generic cleaning methods
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−"""
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−
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−__authors__ = [
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−    '"Todd Larsen" <tlarsen@google.com>',
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−    '"Sverre Rabbelier" <sverre@rabbelier.nl>',
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−    ]
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−
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−
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−from django import forms
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−
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−from soc.logic import validate
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−from soc.logic.models import user as user_logic
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−
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−
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−def clean_link_id(self):
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−  # convert to lowercase for user comfort
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−  link_id = self.cleaned_data.get('link_id').lower()
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−  if not validate.isLinkIdFormatValid(link_id):
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−    raise forms.ValidationError("This link ID is in wrong format.")
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−  return link_id
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−
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−
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−def clean_existing_user(field_name):
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−  """Check if the field_name field is a valid user.
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−  """
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−
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−  def wrapped(self):
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−    link_id = self.cleaned_data.get(field_name).lower()
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−  
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−    if not validate.isLinkIdFormatValid(link_id):
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−      raise forms.ValidationError("This link ID is in wrong format.")
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−  
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−    user_entity = user_logic.logic.getForFields({'link_id' : link_id}, unique=True)
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−  
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−    if not user_entity:
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−      # user does not exist
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−      raise forms.ValidationError("This user does not exist.")
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−  
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−    return user_entity
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−  return wrapped
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−
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−
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−def clean_feed_url(self):
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−  feed_url = self.cleaned_data.get('feed_url')
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−
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−  if feed_url == '':
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−    # feed url not supplied (which is OK), so do not try to validate it
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−    return None
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−  
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−  if not validate.isFeedURLValid(feed_url):
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−    raise forms.ValidationError('This URL is not a valid ATOM or RSS feed.')
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−
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−  return feed_url