I'm using the Geofinder plugin to search for events taking place in an area.
Each Event is assigned one of five categories. The search works fine when I select a category, but I'm unsure how to get it to search all categories, leaving the value empty doesn't produce the correct results.
Here is the simple code:
<select name="categories[]" id="categories">
<option value="">Select All</option>
{exp:channel:categories channel="calendar_events" style="linear"}
<option value="{category_id}">{category_name}</option>
{/exp:channel:categories}
</select>
As I say the 'select all' doesn't work properly.