SYNOPSIS

Top Close Open
[% USE assert %]

# throws error if any undefined values are returned
[% object.assert.method %]
[% hash.assert.key %]
[% list.assert.item %]

DESCRIPTION

Top Close Open

This plugin defines the assert virtual method that can be used to automatically throw errors when undefined values are used.

For example, consider this dotop:

[% user.name %]

If user.name is an undefined value then TT will silently ignore the fact and print nothing. If you USE the assert plugin then you can add the assert vmethod between the user and name elements, like so:

[% user.assert.name %]

Now, if user.name is an undefined value, an exception will be thrown:

assert error - undefined value for name

AUTHOR

Top Close Open

Andy Wardley <abw@wardley.org> http://wardley.org/

COPYRIGHT

Top Close Open

Copyright (C) 2008 Andy Wardley. All Rights Reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.


http://template-toolkit.org/docs/modules/Template/Plugin/Assert.html last modified 15:21:44 17-Sep-2014
Fork me on GitHub