Walker_CategoryDropdown::start_el()

最后更新于：2021-11-26 05:52:56

Starts the element output.

参数

$output

(string) (Required) Used to append additional content (passed by reference).

$category

(GC_Term) (Required) Category data object.

$depth

(int) (Required) Depth of category. Used for padding.

$args

(array) (Optional) Uses ‘selected’, ‘show_count’, and ‘value_field’ keys, if they exist. See gc_dropdown_categories().

Default value: array()

$id

(int) (Optional) ID of the current category. Default 0 (unused).

源文件

文件: gc-includes/class-walker-category-dropdown.php

	public function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
		$pad = str_repeat( ' ', $depth * 3 );

		/** This filter is documented in gc-includes/category-template.php */
		$cat_name = apply_filters( 'list_cats', $category->name, $category );

		if ( isset( $args['value_field'] ) && isset( $category->{$args['value_field']} ) ) {
			$value_field = $args['value_field'];
		} else {
			$value_field = 'term_id';
		}

		$output .= "t<option class="level-$depth" value="" . esc_attr( $category->{$value_field} ) . '"';

		// Type-juggling causes false matches, so we force everything to a string.
		if ( (string) $category->{$value_field} === (string) $args['selected'] ) {
			$output .= ' selected="selected"';
		}
		$output .= '>';
		$output .= $pad . $cat_name;
		if ( $args['show_count'] ) {
			$output .= '&nbsp;&nbsp;(' . number_format_i18n( $category->count ) . ')';
		}
		$output .= "</option>n";
	}