Building TV-Based Filtering with eFilter in Evolution CMS

eFilter was built to make common filtering workflows less painful. Instead of hand-writing every request parser and every query condition, you define a filter form, choose the TVs that matter, and let the result snippet build the filtered output.

Basic pattern

[!eFilter!]
[+eFilter_form+]

[!eFilterResult?
&tpl=`news_tpl`
&parents=`[*id*]`
&depth=`3`
&tvList=`country,facultet,type_obj`
!]

Why teams liked it

• It shortened the path from TV data to usable filters.
• It separated filter form rendering from result rendering.
• It gave nontrivial listings a cleaner structure than custom one-off snippets.

For content-heavy sites, eFilter was a practical step toward better information retrieval without requiring a complete catalog framework.