Hi, if you want to know if an attribute named title for exemple is set you can use this:
{if $node.data_map.title.has_content}
{do same thing}
{/if}
The theory is when we know everything and nothing works.
The practice is when everything works and nobody knows why.
If the practice and theory are met, nothing works and we do not know why.
Justin,
If you explicitly refer in a conditional statement to an inexistent variable, a warning or a notice will be thrown. This is exactly why isset-like functions exist, and eZ has those as well:
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/template_operators/variable_and_type_handling/is_set
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/template_operators/variable_and_type_handling
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/template_operators/data_and_information_extraction/ezhttp_hasvariable
http://ez.no/doc/ez_publish/technical_manual/4_0/reference/template_operators/data_and_information_extraction/ezini_hasvariable
...
Hope this helps,
Cheers, Piotrek
