Show Custom Fields in Quick Edit

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After adding our custom column, we are ready to expand our Post Quick Edit menu using the quick_edit_custom_box action hook.

Note – The quick_edit_custom_box action hook will not fire unless there are custom columns present. That is why we started by adding a custom column.

add_action('quick_edit_custom_box',  'shiba_add_quick_edit', 10, 2);

function shiba_add_quick_edit($column_name, $post_type) {
if ($column_name != 'widget_set') return;
?>
<fieldset class="inline-edit-col-left">
<div class="inline-edit-col">
    <span class="title">Widget Set</span>
    <input type="hidden" name="shiba_widget_set_noncename" id="shiba_widget_set_noncename" value="" />
    <?php // Get all widget sets
        $widget_sets = get_posts( array( 'post_type' => 'widget_set',
                        'numberposts' => -1,
                        'post_status' => 'publish') );
    ?>
    <select name="post_widget_set" id='post_widget_set'>
        <option class="widget-option" value="0">None</option>
        <?php 
        foreach ($widget_sets as $widget_set) {
            echo "<option class="widget-option" value="{$widget_set->ID}">{$widget_set->post_title}</option>\n";
        }
            ?>
    </select>
    </div>
    </fieldset>
    <?php
}

Line 5 – Only render our Quick Edit extension on the relevant screen.
Lines 7 to 25 – Render our custom drop-down menu for selecting widget sets.

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