I think this is a useful validator, any chance this can end up in web2py?
On Friday, August 9, 2013 4:13:30 PM UTC-4, Kyle Flanagan wrote:
>
> I had to use this today. However, this does not work correctly when the
> set is empty. We assume that if the set is empty, whatever variable value
> being tested is not in the set.
>
> Here's an updated __call__ function:
>
> def __call__(self, value):
> value, error = IS_IN_SET.__call__(self, value)
> # if IS_IN_SET says value was in the set AND the set isn't empty
> # then return an error
> if error == None and len(self.theset) > 0:
> return (value, self.error_message)
> else:
> return (value, None)
>
>
>
> On Monday, August 23, 2010 9:19:48 AM UTC-5, Vidul Petrov wrote:
>>
>> Hi all,
>>
>> I needed IS_NOT_IN_SET validator and added it in my custom
>> "validators.py", do you think it is useful?
>>
>>
>> class IS_NOT_IN_SET(IS_IN_SET):
>> """
>> example::
>>
>> INPUT(_type='text', _name='name',
>> requires=IS_NOT_IN_SET(['max', 'john'],zero=''))
>>
>> the argument of IS_NOT_IN_SET must be a list or set
>>
>> >>> IS_NOT_IN_SET(['max', 'john'])('max')
>> ('max', 'value not allowed')
>> >>> IS_NOT_IN_SET(['max', 'john'])('na')
>> ('na', None)
>> >>> IS_NOT_IN_SET(('id1','id2'), ['first label','second
>> label'])('id100')
>> ('id100', None)
>> >>> IS_NOT_IN_SET(('id1','id2'), ['first label','second
>> label'])('id1')
>> ('id1', 'value not allowed')
>> >>> IS_NOT_IN_SET(('id1','id2'), ['first label','second
>> label'])('id2')
>> ('id2', 'value not allowed')
>> >>> IS_NOT_IN_SET({'id1':'first label', 'id2':'second label'})
>> ('id100')
>> ('id100', None)
>> >>> IS_NOT_IN_SET({'id1':'first label', 'id2':'second label'})
>> ('id1')
>> ('id1', 'value not allowed')
>> >>> IS_NOT_IN_SET({'id1':'first label', 'id2':'second label'})
>> ('id2')
>> ('id2', 'value not allowed')
>> >>> import itertools
>> >>> IS_NOT_IN_SET(itertools.chain(['1','3','5'],['2','4','6']))
>> ('100')
>> ('100', None)
>> >>> IS_NOT_IN_SET(itertools.chain(['1','3','5'],['2','4','6']))
>> ('1')
>> ('1', 'value not allowed')
>> >>> IS_NOT_IN_SET(itertools.chain(['1','3','5'],['2','4','6']))
>> ('6')
>> ('6', 'value not allowed')
>> >>> IS_NOT_IN_SET(itertools.chain(['1','3','5'],['2','4','6']))
>> ('7')
>> ('7', None)
>> """
>>
>> def __init__(self, *a, **b):
>> IS_IN_SET.__init__(self, *a, **b)
>>
>> def __call__(self, value):
>> value, error = IS_IN_SET.__call__(self, value)
>> if error == None:
>> return (value, self.error_message)
>> else:
>> return (value, None)
>>
>
--
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