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I currently wrote a plugins to customize my wordpress website. I surprisly find it easy to do many things with hook. Now I want to make author not be able to push publish button if no category is choosed ( I don't want uncategorized article and force author to choose something ) How I can did this with a little message telling to the user to choose a category when he try to click publish button if no category are checked.

thanks

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    You will need Javascript. How far can you get on this without help?
    – s_ha_dum
    Mar 6, 2014 at 23:54
  • you can force category selection before loading the post edit screen, see this answer.
    – Milo
    Mar 7, 2014 at 0:00
  • s_ha_dum : not really far because I don't know where to start ... and probably less far if you tell me I really need to use javascript. Possible to only use php and hook ? Milo 10: If I can avoid popup a page before to entered in the articles form will be great. If it's can happen directly on the same page.
    – Jean-Francois Gallant
    Mar 7, 2014 at 0:11
  • Unless you use Javascript, you can (probably) remove the publish button if no category is selected, but you would have to save with a category, then publish in a second action. The best approach would be PHP and Javascript, honestly.
    – s_ha_dum
    Mar 7, 2014 at 0:25
  • Here is a preview of what you are getting into unless there are changes in the latest version that might make it easier.
    – s_ha_dum
    Mar 7, 2014 at 0:32

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I finally found somethings. Not directly by cod it but I find a already wrote plugins for this.

http://wordpress.org/plugins/force-post-category-selection/

Hope it's will help others wordpress user.

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