Add Multiselect Option to wp_dropdown_pages / wp_dropdown_categories

[jackreichert]

Select menus are helpful, but sometimes you want to offer the ability to select more than one option. The attached patch adds functionality to add multiple="multiple" if needed.

[jackreichert]

patch adds multiple="multiple" to wp_dropdown_pages()

[jackreichert]

Same fix for wp_dropdown_categories

[ocean90]

#15523

[ocean90]

Oh, the other patch wasn't there as I closed the ticket.

If you want you can re-open it and add wp_dropdown_categories to the title.

[jackreichert]

Thanks, did that.

[scribu]

Same comment as in the other ticket: <select multiple> has a horrible UX. We should not encourage it's use.

[jackreichert]

I agree that multiselect does not provide good UX, however there are use-cases, such as settings pages for plugins and themes. That's how I came across the issue and thought it would be worth a shot submitting the patch.

[scribu]

Why not provide a list of checkboxes instead, since that's what we use for the category metabox, after all.

[DrewAPicture]

Replying to scribu:

Why not provide a list of checkboxes instead, since that's what we use for the category metabox, after all.

Agreed. If you want multiple select, why not just use the checkbox list instead?

[jackreichert]

That is what I ended up doing with the theme I was developing.

[scribu]

So, wp_terms_checklist() covers that.

What use-cases are there to warrant a wp_pages_checklist()?

[jackreichert]

Similar to terms checklist i.e. adding specific functionality to user-specified pages. For example, a widget that isn't relevant for all pages, only some. I agree that a wp_post_checklist might be overkill.

I'd be happy to create the patch if you think it's warranted.

[DrewAPicture]

Replying to scribu:

So, wp_terms_checklist() covers that.

What use-cases are there to warrant a wp_pages_checklist()?

Any idea what function renders the Pages checklist on nav-menus.php?

[scribu]

It's probably loose code, but would be worth putting it into a function. Two birds with one stone.

[scribu]

If someone does write a patch that implements wp_posts_checklist() and uses it in nav-menus.php, please open a new ticket.

[scribu]

Follow-up: #20167