內容簡介
感謝由 WebDevStudios 創建的套件 Taxonomy_Single_Term，讓我在開發這個外掛時更輕鬆。
使用分類增強型資訊框，您可以：
將內建分類資訊框/面板改為單一術語 UI，也就是將勾選框替換為單選按鈕或下拉式選單。
在外掛的設定頁面上應用此單一術語 UI 到其他分層式分類。
透過設定以下選項，自定義單一術語 UI：
資訊框位置的優先級和位置。
資訊框的標題。
子術語是否應縮進。
是否啟用從資訊框新增術語的功能。
外掛標籤
開發者團隊
原文外掛簡介
Try it live in your browser — launch the WordPress Playground demo. Boots a WordPress instance with this plugin active, the Category taxonomy pre-configured as radio buttons, and seeded posts you can edit in the Block Editor or run through Quick Edit / Bulk Edit immediately.
Thanks to Taxonomy_Single_Term, a library created by WebDevStudios, it made my work much easier on creating this plugin.
With Categories Metabox Enhanced, you can:
Change the built-in Categories metabox/panel to a single term UI, which means replacing the checkboxes with radio buttons or a select drop-down.
Apply the single term UI to other hierarchical taxonomies from the plugin’s Settings page.
Configure each hierarchical taxonomy independently — the same install can keep one taxonomy as checkboxes while another is forced to radio.
Customize the single term UI by setting these options:
Option type (checkbox, radio, or select).
Priority and position (context) of the metabox placement. Classic editor only.
Title of the metabox / Block Editor panel.
Whether child-terms should be indented.
Whether adding new terms from the metabox is enabled.
Whether a term selection is required (Force selection). When on, the classic metabox hides the “None” option, the Block Editor sidebar drops the “— Select —” entry once a term is chosen, and an empty save is substituted with a default term server-side so REST and programmatic callers can’t bypass it.
The single-term invariant is enforced everywhere posts can be saved: the Classic Editor metabox, the Block Editor sidebar panel, Quick Edit, Bulk Edit, the REST API, WP-CLI, and any code that calls wp_set_object_terms() directly. The classic-editor and Block Editor surfaces enforce in the UI; everything else is enforced on the server via the set_object_terms action, which coerces multi-term submissions to the last term and substitutes the default term on empty submissions when Force selection is on.
The substituted default term resolves in this order: the default_
The Block Editor sidebar panel is rendered for taxonomies registered with show_in_rest = true. Hierarchical taxonomies that opt out of REST fall back to the Classic Editor metabox path.
