konval.stringval.IsNonblank

Class IsNonblank

Only allow non-blank strings (i.e. those with a length more than 0).

For example:

>>> v = IsNonblank() >>> v ('abcd') 'abcd' >>> v ('') Traceback (most recent call last): ... ValueError: can't validate ''

Instance Methods

[hide private]

validate_value(self, value)
Check a value is of the desired form.

source code

Inherited from basevalidator.BaseValidator: __call__, convert, convert_value, make_conversion_error_msg, make_validation_error_msg, raise_conversion_error, raise_validation_error, validate

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __init__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

validate_value(self, value)

source code

Check a value is of the desired form.

This is the workhorse method that is called by validate to check passed values. As such, errors are signalled by either by throwing a meaningful exception or by returning false. This is one of the obvious and easiest places to customize behaviour by overriding in a subclass.

Parameters:

value - value to be checked

Returns:

success of validation.

Overrides: basevalidator.BaseValidator.validate_value

(inherited documentation)