Package web2py :: Package gluon :: Module validators :: Class IS_EXPR |
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# Class IS_EXPR

source code

    object --+
             |
     Validator --+
                 |
                IS_EXPR

example:

       INPUT(_type='text', _name='name',
           requires=IS_EXPR('5 < int(value) < 10'))

the argument of IS_EXPR must be python condition:

       >>> IS_EXPR('int(value) < 2')('1')
       ('1', None)

       >>> IS_EXPR('int(value) < 2')('2')
       ('2', 'invalid expression')

Instance Methods | [hide private]
__init__(self, expression, error_message=`'``invalid expression``'`) x.__init__(...) initializes x; see x.__class__.__doc__ for signature | source code
__call__(self, value) | source code
Inherited from `Validator`: `formatter` Inherited from `object`: `__delattr__`, `__getattribute__`, `__hash__`, `__new__`, `__reduce__`, `__reduce_ex__`, `__repr__`, `__setattr__`, `__str__`

Properties | [hide private]
Inherited from `object`: `__class__`

Method Details | [hide private]

### __init__(self, expression, error_message=`'``invalid expression``'`) (Constructor) | source code
x.__init__(...) initializes x; see x.__class__.__doc__ for signature Overrides: object.__init__ (inherited documentation)