Data::FormValidator::ConstraintsFactory - Module to create constraints for HTML::FormValidator.
Contents
Boolean Constraints
Those constraints are available by using the ":bool" tag.
make_not_constraint($c1)
This will create a constraint that will return the negation of the result of constraint $c1.
make_or_constraint(@constraints)
This will create a constraint that will return the result of the first constraint that return an non
false result.
make_and_constraint(@constraints)
This will create a constraint that will return the result of the first constraint that return an non
false result only if all constraints returns a non-false results.
Copyright
Copyright (c) 2000 iNsu Innovations Inc. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the terms as perl itself.
perl v5.34.0 2022-06-12 Data::FormVali...straintsFactory(3pm)
Description
This module contains functions to help generate complex constraints.
If you are writing new code, take a look at Data::FormValidator::Constraints::MethodsFactory instead.
It's a modern alternative to what's here, offering improved names and syntax.
Name
Data::FormValidator::ConstraintsFactory - Module to create constraints for HTML::FormValidator.
Numerical Logical Constraints
Those constraints are available by using the ":num" tag.
make_clamp_constraint($res,$low,$high)
This will create a constraint that will return $res if the value is between $low and $high bounds
included or its negation otherwise.
make_lt_constraint($res,$bound)
This will create a constraint that will return $res if the value is lower than $bound, or the negation of
$res otherwise.
make_le_constraint($res,$bound)
This will create a constraint that will return $res if the value is lower or equal than $bound, or the
negation of $res otherwise.
make_gt_constraint($res,$bound)
This will create a constraint that will return $res if the value is greater than $bound, or the negation
of $res otherwise.
make_ge_constraint($res,$bound)
This will create a constraint that will return $res if the value is greater or equal than $bound, or the
negation of $res otherwise.
Other Constraints
make_length_constraint($max_length)
This will create a constraint that will return true if the value has a length of less than or equal to
$max_length
See Also
Data::FormValidator(3)
Set Constraints
Those constraints are available by using the ":set" tag.
make_set_constraint($res,@elements)
This will create a constraint that will return $res if the value is one of the @elements set, or the
negation of $res otherwise.
The "eq" operator is used for comparison.
make_num_set_constraint($res,@elements)
This will create a constraint that will return $res if the value is one of the @elements set, or the
negation of $res otherwise.
The "==" operator is used for comparison.
make_word_set_constraint($res,$set)
This will create a constraint that will return $res if the value is a word in $set, or the negation of
$res otherwise.
make_cmp_set_constraint($res,$cmp,@elements)
This will create a constraint that will return $res if the value is one of the @elements set, or the
negation of $res otherwise.
$cmp is a function which takes two argument and should return true or false depending if the two elements
are equal.
Synopsis
use Data::FormValidator::ConstraintsFactory qw( :set :bool );
constraints => {
param1 => make_or_constraint(
make_num_set_constraint( -1, ( 1 .. 10 ) ),
make_set_constraint( 1, ( 20 .. 30 ) ),
),
province => make_word_set_constraint( 1, "AB QC ON TN NU" ),
bid => make_range_constraint( 1, 1, 10 ),
}
