Template::Plugin::Assert3pm
Trap undefined values
Usage
[% USE assert %]# throws error if any undefined values are returned[% object.assert.method %][% hash.assert.key %][% list.assert.item %]
Overview
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
Releases
9 releases since Debian 6.0 (Squeeze); the text changed 8 times.