wp_dropdown_categories values as slug

[gputignano]

wp_dropdown_categories returns value attribute in option tag as a numeric value. It could be better to choose it between an id or slug. For example if I want to filter a post list by a taxonomy I have to set taxonomy value to slug in global $query var.

[collinsinternet]

value_field argument

[collinsinternet]

This isn't a bad idea. You could add an argument to the wp_dropdown_categories() called 'value_field' and set the value as 'slug' or any other part of the $category object (e.g. 'name').

[collinsinternet]

Unit test of added functionality.

[boonebgorges]

In 31005:

Use proper hash notation for wp_dropdown_categories() docblock.

See #30306.

[boonebgorges]

This seems like a good idea, and will mitigate the issue described in #30865. Let's do it.

[boonebgorges]

In 31006:

In wp_dropdown_categories(), allow the term field used to populate option valuesto be specified.

The new 'value_field' parameter makes it possible to set term slugs (or some
other term property) as the 'value' attribute of the option elements generated
by wp_dropdown_categories(). This additional flexibility reduces the effort
required to translate term_id to other term fields when processing form
submissions that include values from taxonomy dropdowns. See #30865 for a
use case.

Props collinsinternet.
Fixes #30306.

[DrewAPicture]

In 31357:

Update the DocBlock for wp_dropdown_categories() to reflect that the entire $args parameter array is optional instead of individual arugments.

See #30306.

[boonebgorges]

#13258 was marked as a duplicate.