1Template::Plugin::AsserUts(e3r)Contributed Perl DocumentTaetmipolnate::Plugin::Assert(3)
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NAME

6       Template::Plugin::Assert - trap undefined values
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SYNOPSIS

9           [% USE assert %]
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11           # throws error if any undefined values are returned
12           [% object.assert.method %]
13           [% hash.assert.key %]
14           [% list.assert.item %]
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DESCRIPTION

17       This plugin defines the "assert" virtual method that can be used to
18       automatically throw errors when undefined values are used.
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20       For example, consider this dotop:
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22           [% user.name %]
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24       If "user.name" is an undefined value then TT will silently ignore the
25       fact and print nothing.  If you "USE" the "assert" plugin then you can
26       add the "assert" vmethod between the "user" and "name" elements, like
27       so:
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29           [% user.assert.name %]
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31       Now, if "user.name" is an undefined value, an exception will be thrown:
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33           assert error - undefined value for name
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AUTHOR

36       Andy Wardley <abw@wardley.org> <http://wardley.org/>
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39       Copyright (C) 2008 Andy Wardley.  All Rights Reserved.
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41       This module is free software; you can redistribute it and/or modify it
42       under the same terms as Perl itself.
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SEE ALSO

45       Template::Plugin
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49perl v5.30.1                      2020-01-30       Template::Plugin::Assert(3)
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