NAME

Input::Validator::Constraint::Callback - Callback constraint

SYNOPSIS

            

              
              
$validator->field('foo')->callback(sub {
    my $value = shift;
    return 1 if $value =~ m/^\d+$/;
    return (0, 'Value is not a number');
});
            
          

DESCRIPTION

Run a callback to validate a field. Return a true value when validation succeded, and false value when failed.

In order to set your own error instead of a default one return an array where the error message is the second argument.

METHODS

is_valid

Validates the constraint.

SEE ALSO

Input::Validator, Input::Validator::Constraint