"Parent" dropdown missing when only 1 page present

[dd32]

At present, if you edit a hierarchical post type (Page, or custom type) and have only 1 page OR only have 1 top level page, The "Parent" dropdown list will be hidden.

The title and description remain, but there is no selection box.

This is due to wp_dropdown_pages() only displaying the <select> if pages are present.

One solution is to hide the entire parent functionality until pages are available
Another is to leave as-is
And another is to force the display of the <select> element even with no pages (Either all the time, or only when $show_option_none is set potentially..

While this would rarely be run into, It can cause some confusion for custom post_types which are more likely to have fewer entries.

Thoughts?

[sorich87]

I think it is better to hide the 'Parent' attribute to avoid confusion.

[dd32]

I'm not 100% hiding the Parent dropdown is the best option available, It introduces a UI mis-match a bit.

But at the same time, Other elements are hidden if they're not usable.

[dd32]

(In [14232]) Hide Parent dropdown in Page-attributes metabox when no potential parents exist. Props sorich87. Fixes #12655