为 WordPress 分类目录的描述添加可视化编辑器

/**
 * 为 WordPress 分类目录的描述添加可视化编辑器
 * https://www.wpdaxue.com/add-tinymce-editor-category-description.html
 */
// 移除HTML过滤
remove_filter( 'pre_term_description', 'wp_filter_kses' );
remove_filter( 'term_description', 'wp_kses_data' );
//为分类编辑界面添加可视化编辑器的“描述”框
add_filter('edit_category_form_fields', 'cat_description');
function cat_description($tag)
{
	?>
	<table class="form-table">
		<tr class="form-field">
			<th scope="row" valign="top"><label for="description"><?php _ex('Description', 'Taxonomy Description'); ?></label></th>
			<td>
				<?php
				$settings = array('wpautop' => true, 'media_buttons' => true, 'quicktags' => true, 'textarea_rows' => '15', 'textarea_name' => 'description' );
				wp_editor(wp_kses_post($tag->description , ENT_QUOTES, 'UTF-8'), 'cat_description', $settings);
				?>
				<br />
				<span class="description"><?php _e('The description is not prominent by default; however, some themes may show it.'); ?></span>
			</td>
		</tr>
	</table>
	<?php
}
//移除默认的“描述”框
add_action('admin_head', 'remove_default_category_description');
function remove_default_category_description()
{
	global $current_screen;
	if ( $current_screen->id == 'edit-category' )
	{
		?>
		<script type="text/javascript">
			jQuery(function($) {
				$('textarea#description').closest('tr.form-field').remove();
			});
		</script>
		<?php
	}
}