How to limit the number of taxonomy values in a Wordpress post? -

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i have defined series of custom post types (namely "portfoliopage" , "portfoliogallery").

each of them uses custom taxonomy called "artist".

is there way limit end-user enter @ 1 artist per portfoliopage / portfoliogallery post?

you cause custom taxonomy use radio buttons rather checkboxes, have here: https://wordpress.stackexchange.com/questions/7456/altering-the-appearance-of-custom-taxonomy-inputs


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