Cool! but it does not allow the transformation.
class CUSTOM(object): """ you can use a function or a lambda
to validate or/and transform the field in the way you want it is
the same as "onvalidation" and "onsuccess" form callbacks but it
can be used per field in models or controller level Usage: #
the validate function should return the error_message or None def
begins_with_a(value): if not value.startswith('a'):
return "Should start with a" else: return None
# the transform function should return a value def
to_upper(value): return value.upper()
db.define_table("foo", Field("bar")) db.foo.bar.requires =
CUSTOM(begins_with_a, to_upper) >>> CUSTOM(begins_with_a,
to_upper)('apple') ('APPLE', None) >>> CUSTOM(begins_with_a,
to_upper)('orange') ('ORANGE', 'Should start with a') """ def
__init__(self, validate=lambda value: None, transform=lambda value:
value): self.validate = validate self.transform =
transform def __call__(self, value):
return(self.transform(value), self.validate(value))
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