[web2py] Re: Useful validators IS_LETTERS, IS_DIGITS
Since the two functions are subsets of IS_ALPHANUMERIC(), I'd suggest
that the sub-functions be named:
IS_ALPHA()
and
IS_NUMERIC()
On Aug 28, 2:56 pm, Jonathan Lundell jlund...@pobox.com wrote:
On Aug 28, 2011, at 11:23 AM, Saurabh Sawant wrote:
They seem fine. Although, having ready to use validators would save
some time for those learning the framework. I personally expected
those validators to be already there while I was learning.
Trouble is, there's an endless list of pattern expressions that can be
useful. IS_MATCH is pretty powerful, and should be in your bag of tricks (in
fact, IS_ALPHANUMERIC just calls IS_MATCH).
At the very least, consider that you might want a language-dependent
IS_LETTERS, or at least one that accepts the common alphabetic variants.
However, if you do that, do it this way:
IS_MATCH('[0-9]+', strict=True)
IS_MATCH('[a-zA-Z]+', strict=True)
strict=True forces a $ at the end of the regex. Or you can just include the
$. (IS_MATCH is already anchored at the beginning of the string.)
On Aug 28, 11:05 pm, Massimo Di Pierro massimo.dipie...@gmail.com
wrote:
what's wrong with?
IS_MATCH('[0-9]+')
IS_MATCH('[a-zA-Z]+')
On Aug 28, 12:59 pm, Saurabh Sawant ris...@gmail.com wrote:
But IS_ALPHANUMERIC by virtue of its name suggests both letters and
numbers. Having separate validators for each of the cases would make
the code more readable.
db.auth_user.first_name.requires=IS_LETTERS()
db.auth_user.age.requires=IS_DIGITS()
[web2py] Re: Useful validators IS_LETTERS, IS_DIGITS
But IS_ALPHANUMERIC by virtue of its name suggests both letters and
numbers. Having separate validators for each of the cases would make
the code more readable.
db.auth_user.first_name.requires=IS_LETTERS()
db.auth_user.age.requires=IS_DIGITS()
is more readable and less ambiguous than
db.auth_user.first_name.requires=IS_ALPHANUMERIC(filter='letters')
db.auth_user.mobile.requires=IS_ALPHANUMERIC(filter='numbers')
On Aug 28, 10:13 pm, Bruno Rocha rochacbr...@gmail.com wrote:
Or maybe the IS_ALPHANUMERIC can be extended and receive aditional argument
'filter' to allow only letters or only numbers
IS_ALPHANUMERIC(error_message='', filter='numbers') # to allow only
digits
IS_ALPHANUMERIC(error_message='', filter='letters') # to allow letters
can have some filter to allow special, underscores etc...
http://web2py.com/book/default/docstring/IS_ALPHANUMERIC
On Sun, Aug 28, 2011 at 1:54 PM, Saurabh Sawant ris...@gmail.com wrote:
Hi,
I think these validators would be a nice addition to the great set of
validators we already have. They can be useful for fields for names
and phone numbers.
class IS_LETTERS(Validator):
Checks if field's value consists of all letters
example::
INPUT(_type='text', _name='name', requires=IS_LETTERS())
IS_LETTERS()(A)
('A', None)
IS_LETTERS()()
('', None)
IS_LETTERS()(A_)
('A_', 'enter only letters')
IS_LETTERS()(!)
('!', 'enter only letters')
def __init__(self, error_message='enter only letters'):
IS_MATCH.__init__(self, '^[A-Za-z]*$', error_message)
class IS_DIGITS(Validator):
Checks if field's value consists of all numeric digits
example::
INPUT(_type='text', _name='name', requires=IS_DIGITS())
IS_NUMBERS()(1)
('1', None)
IS_NUMBERS()()
('', None)
IS_NUMBERS()(A)
('A', 'enter only numbers')
IS_NUMBERS()(!)
('!', 'enter only numbers')
def __init__(self, error_message='enter only digits'):
IS_MATCH.__init__(self, '^[0-9]*$', error_message)
Regards,
Saurabh Sawant
--
--
Bruno Rocha
[ About me:http://zerp.ly/rochacbruno]
[ Aprenda a programar:http://CursoDePython.com.br]
[ O seu aliado nos cuidados com os animais:http://AnimalSystem.com.br]
[ Consultoria em desenvolvimento web:http://www.blouweb.com]
[web2py] Re: Useful validators IS_LETTERS, IS_DIGITS
what's wrong with?
IS_MATCH('[0-9]+')
IS_MATCH('[a-zA-Z]+')
On Aug 28, 12:59 pm, Saurabh Sawant ris...@gmail.com wrote:
But IS_ALPHANUMERIC by virtue of its name suggests both letters and
numbers. Having separate validators for each of the cases would make
the code more readable.
db.auth_user.first_name.requires=IS_LETTERS()
db.auth_user.age.requires=IS_DIGITS()
is more readable and less ambiguous than
db.auth_user.first_name.requires=IS_ALPHANUMERIC(filter='letters')
db.auth_user.mobile.requires=IS_ALPHANUMERIC(filter='numbers')
On Aug 28, 10:13 pm, Bruno Rocha rochacbr...@gmail.com wrote:
Or maybe the IS_ALPHANUMERIC can be extended and receive aditional argument
'filter' to allow only letters or only numbers
IS_ALPHANUMERIC(error_message='', filter='numbers') # to allow only
digits
IS_ALPHANUMERIC(error_message='', filter='letters') # to allow letters
can have some filter to allow special, underscores etc...
http://web2py.com/book/default/docstring/IS_ALPHANUMERIC
On Sun, Aug 28, 2011 at 1:54 PM, Saurabh Sawant ris...@gmail.com wrote:
Hi,
I think these validators would be a nice addition to the great set of
validators we already have. They can be useful for fields for names
and phone numbers.
class IS_LETTERS(Validator):
Checks if field's value consists of all letters
example::
INPUT(_type='text', _name='name', requires=IS_LETTERS())
IS_LETTERS()(A)
('A', None)
IS_LETTERS()()
('', None)
IS_LETTERS()(A_)
('A_', 'enter only letters')
IS_LETTERS()(!)
('!', 'enter only letters')
def __init__(self, error_message='enter only letters'):
IS_MATCH.__init__(self, '^[A-Za-z]*$', error_message)
class IS_DIGITS(Validator):
Checks if field's value consists of all numeric digits
example::
INPUT(_type='text', _name='name', requires=IS_DIGITS())
IS_NUMBERS()(1)
('1', None)
IS_NUMBERS()()
('', None)
IS_NUMBERS()(A)
('A', 'enter only numbers')
IS_NUMBERS()(!)
('!', 'enter only numbers')
def __init__(self, error_message='enter only digits'):
IS_MATCH.__init__(self, '^[0-9]*$', error_message)
Regards,
Saurabh Sawant
--
--
Bruno Rocha
[ About me:http://zerp.ly/rochacbruno]
[ Aprenda a programar:http://CursoDePython.com.br]
[ O seu aliado nos cuidados com os animais:http://AnimalSystem.com.br]
[ Consultoria em desenvolvimento web:http://www.blouweb.com]
[web2py] Re: Useful validators IS_LETTERS, IS_DIGITS
Hi Massimo,
They seem fine. Although, having ready to use validators would save
some time for those learning the framework. I personally expected
those validators to be already there while I was learning.
On Aug 28, 11:05 pm, Massimo Di Pierro massimo.dipie...@gmail.com
wrote:
what's wrong with?
IS_MATCH('[0-9]+')
IS_MATCH('[a-zA-Z]+')
On Aug 28, 12:59 pm, Saurabh Sawant ris...@gmail.com wrote:
But IS_ALPHANUMERIC by virtue of its name suggests both letters and
numbers. Having separate validators for each of the cases would make
the code more readable.
db.auth_user.first_name.requires=IS_LETTERS()
db.auth_user.age.requires=IS_DIGITS()
is more readable and less ambiguous than
db.auth_user.first_name.requires=IS_ALPHANUMERIC(filter='letters')
db.auth_user.mobile.requires=IS_ALPHANUMERIC(filter='numbers')
On Aug 28, 10:13 pm, Bruno Rocha rochacbr...@gmail.com wrote:
Or maybe the IS_ALPHANUMERIC can be extended and receive aditional
argument
'filter' to allow only letters or only numbers
IS_ALPHANUMERIC(error_message='', filter='numbers') # to allow only
digits
IS_ALPHANUMERIC(error_message='', filter='letters') # to allow
letters
can have some filter to allow special, underscores etc...
http://web2py.com/book/default/docstring/IS_ALPHANUMERIC
On Sun, Aug 28, 2011 at 1:54 PM, Saurabh Sawant ris...@gmail.com wrote:
Hi,
I think these validators would be a nice addition to the great set of
validators we already have. They can be useful for fields for names
and phone numbers.
class IS_LETTERS(Validator):
Checks if field's value consists of all letters
example::
INPUT(_type='text', _name='name', requires=IS_LETTERS())
IS_LETTERS()(A)
('A', None)
IS_LETTERS()()
('', None)
IS_LETTERS()(A_)
('A_', 'enter only letters')
IS_LETTERS()(!)
('!', 'enter only letters')
def __init__(self, error_message='enter only letters'):
IS_MATCH.__init__(self, '^[A-Za-z]*$', error_message)
class IS_DIGITS(Validator):
Checks if field's value consists of all numeric digits
example::
INPUT(_type='text', _name='name', requires=IS_DIGITS())
IS_NUMBERS()(1)
('1', None)
IS_NUMBERS()()
('', None)
IS_NUMBERS()(A)
('A', 'enter only numbers')
IS_NUMBERS()(!)
('!', 'enter only numbers')
def __init__(self, error_message='enter only digits'):
IS_MATCH.__init__(self, '^[0-9]*$', error_message)
Regards,
Saurabh Sawant
--
--
Bruno Rocha
[ About me:http://zerp.ly/rochacbruno]
[ Aprenda a programar:http://CursoDePython.com.br]
[ O seu aliado nos cuidados com os animais:http://AnimalSystem.com.br]
[ Consultoria em desenvolvimento web:http://www.blouweb.com]
Re: [web2py] Re: Useful validators IS_LETTERS, IS_DIGITS
On Aug 28, 2011, at 11:23 AM, Saurabh Sawant wrote:
They seem fine. Although, having ready to use validators would save
some time for those learning the framework. I personally expected
those validators to be already there while I was learning.
Trouble is, there's an endless list of pattern expressions that can be useful.
IS_MATCH is pretty powerful, and should be in your bag of tricks (in fact,
IS_ALPHANUMERIC just calls IS_MATCH).
At the very least, consider that you might want a language-dependent
IS_LETTERS, or at least one that accepts the common alphabetic variants.
However, if you do that, do it this way:
IS_MATCH('[0-9]+', strict=True)
IS_MATCH('[a-zA-Z]+', strict=True)
strict=True forces a $ at the end of the regex. Or you can just include the $.
(IS_MATCH is already anchored at the beginning of the string.)
On Aug 28, 11:05 pm, Massimo Di Pierro massimo.dipie...@gmail.com
wrote:
what's wrong with?
IS_MATCH('[0-9]+')
IS_MATCH('[a-zA-Z]+')
On Aug 28, 12:59 pm, Saurabh Sawant ris...@gmail.com wrote:
But IS_ALPHANUMERIC by virtue of its name suggests both letters and
numbers. Having separate validators for each of the cases would make
the code more readable.
db.auth_user.first_name.requires=IS_LETTERS()
db.auth_user.age.requires=IS_DIGITS()
