wp_update_nav_menu_item() to insert categories

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After using the Chrome inspector on the “Appearance > Menus” categories panel I was able to sniff out the hidden form values that are passed when one manually adds a category to a custom menu via the wizard:

<li>
    <label class="menu-item-title">
        <input type="checkbox" class="menu-item-checkbox" name="menu-item[-11][menu-item-object-id]" value="181"> Category One</label>
        <input type="hidden" class="menu-item-db-id" name="menu-item[-11][menu-item-db-id]" value="0">
        <input type="hidden" class="menu-item-object" name="menu-item[-11][menu-item-object]" value="category">
        <input type="hidden" class="menu-item-parent-id" name="menu-item[-11][menu-item-parent-id]" value="0">
        <input type="hidden" class="menu-item-type" name="menu-item[-11][menu-item-type]" value="taxonomy">
        <input type="hidden" class="menu-item-title" name="menu-item[-11][menu-item-title]" value="Category One">
        <input type="hidden" class="menu-item-url" name="menu-item[-11][menu-item-url]" value="http://localhost:8888/silo4/./category-one/">
        <input type="hidden" class="menu-item-target" name="menu-item[-11][menu-item-target]" value="">
        <input type="hidden" class="menu-item-attr_title" name="menu-item[-11][menu-item-attr_title]" value="">
        <input type="hidden" class="menu-item-classes" name="menu-item[-11][menu-item-classes]" value="">
        <input type="hidden" class="menu-item-xfn" name="menu-item[-11][menu-item-xfn]" value="">
    </li>

So, the resulting script becomes:

wp_update_nav_menu_item($menu->term_id, 0, array(
    'menu-item-title' => $category->name,
    'menu-item-object-id' => $category->term_id,
    'menu-item-db-id' => 0,
    'menu-item-object' => 'category',
    'menu-item-parent-id' => 0,
    'menu-item-type' => 'taxonomy',
    'menu-item-url' => get_category_link($category->term_id),
    'menu-item-status' => 'publish',)
);

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