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Site-wide categories
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NOTES FOR DEVELOPERS:
If you're not a programmer, don't worry! All the main Elgg tools
are already adapted to use categories, and a growing number of
third party Elgg tools use it too.
This plugin uses views and events hooks to allow you to easily add
site-wide categories across Elgg tools.
This is a two-line addition to any plugin.
In your edit/create form:
echo elgg_view('input/categories', $vars);
In your object view:
echo elgg_view('output/categories', $vars);
Note that in both cases, $vars['entity'] MUST be populated with
the entity the categories apply to, if it exists.
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