It gives me the idea of a CUSTOM validator
class CUSTOM(object):
def __init__(self, function):
self.function = function
def __call__(self, value):
# the function should return the error_message or None
return(value, self.function(value))
So the use should be:
def my_validator_function(value):
# do anything
return "error message" or None
db.table.field.requires = CUSTOM(my_validator_function)
So, it works the same as onvalidation but can be applied in models.
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