Cross referencing categories
I have an events category on my site (lets say category 1) – the client has the ability to to categorise posts under another category (say a list of project types – category 2) and events.
When the user is on the category page for events – I would like them to be able to select from a list of projects (ideally only ones which have events) and then show the resulting posts – so essentially they will be taken to a page showing ?cat=1&cat=2
Now I could code this by hand – but I’d ideally like wordpress to detect and link those additional categories and create the filter – so If new categories are created they will be added to the list.
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