HTML::FormHandler::Field::Checkbox - a checkbox field type
This field is very similar to the Boolean Widget except that this field allows
other positive values besides 1. Since unselected checkboxes do not return a
parameter, fields with Checkbox type will always be set to the
'input_without_param' default if they do not appear in the form.
In order to create the HTML for a checkbox, there must be a
'value="xx"'. This value is specified with the 'checkbox_value'
attribute, which defaults to 1.
If the checkbox is not checked, it will be set to the value of this attribute
(the unchecked value). Default = 0. Because unchecked checkboxes do not return
anything in the HTTP parameters, the absence of a checkbox key in the
parameters hash forces this field to this value. This means that Checkbox
fields, unlike other fields, will not be ignored if there is no input. If a
particular checkbox should not be processed for a particular form, you must
set 'inactive' to 1 instead.
Note that a checkbox is only 'checked' when the 'checkbox_value' is provided.
The 'value' for a non-checked checkbox is only really useful for creating form
values such as are stored in a database.
FormHandler Contributors - see HTML::FormHandler
This software is copyright (c) 2017 by Gerda Shank.
This is free software; you can redistribute it and/or modify it under the same
terms as the Perl 5 programming language system itself.