Is there a way to limit the number of top level items in a custom menu?

All we need is an easy explanation of the problem, so here it is.

I wish to implement the wordpress 3 menus API in a client site, but the designs has restraint on the width of the top level menu items. How can I be sure the client won’t exceed that limit?

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

The easiest way to accomplish this would be to filter wp_nav_menu_items or more precisely wp_nav_menu_{$menu->slug}_items and cut extra items from output.

It would probably me more pretty and proper to limit/warn user in admin area, but at moment I have no remote idea where to start with that. I should learn up on admin side some time. 🙂

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

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