[% USE assert %]
# throws error if any undefined values are returned
[% object.assert.method %]
[% hash.assert.key %]
[% list.assert.item %]
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
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.