代码按预期工作。
如果我默认设置“show\\u post\\u count”=>1，则会出现此问题。在这种情况下，复选框将始终启用。
即使复选框值默认设置为1，我也应该如何更新代码以使其按预期工作。
<?php
class Custom_Archives_Widget extends WP_Widget {
/**
* Register widget with WordPress.
*/
function __construct() {
parent::__construct(
\'custom_archives_widget\', // Base ID
__( \'Custom Archives\', \'custom\' ), // Name
array( \'description\' => __( \'Custom Archives Widget\', \'custom\' ) ) // Args
);
}
/**
* Front-end display of widget.
*
* @see WP_Widget::widget()
*
* @param array $args Widget arguments.
* @param array $instance Saved values from database.
*/
public function widget( $args, $instance ) {
//extract( $args );
$instance = wp_parse_args( (array) $instance, self::get_defaults() );
echo $args[\'before_widget\'];
if ( ! empty( $instance[\'title\'] ) ) {
echo $args[\'before_title\'] . apply_filters( \'widget_title\', $instance[\'title\'] ). $args[\'after_title\'];
}
$instance[\'echo\'] = false;
$archives = wp_get_archives( $instance );
if ( $instance[\'format\'] == \'option\' ) { // Archives as a dropdown
echo \'<p class="custom-archives"><select name="archive-dropdown" onchange=\\\'document.location.href=this.options[this.selectedIndex].value;\\\'>\';
echo \'<option value=""></option>\';
echo $archives;
echo \'</select></p><!-- .custom-archives -->\';
} elseif ( $instance[\'format\'] == \'html\' ) { // Archives as an unordered list
echo \'<ul class="custom-archives">\' . $archives . \'</ul><!-- .custom-archives -->\';
} else { // Other formats
echo $archives;
}
echo $args[\'after_widget\'];
}
/**
* Back-end widget form.
*
* @see WP_Widget::form()
*
* @param array $instance Previously saved values from database.
*/
public function form( $instance ) {
$instance = wp_parse_args( (array) $instance, self::get_defaults() );
$type_list = array(
\'yearly\' => __( \'Yearly\', \'custom\' ),
\'monthly\' => __( \'Monthly\', \'custom\' ),
\'daily\' => __( \'Daily\', \'custom\' ),
\'weekly\' => __( \'Weekly\', \'custom\' ),
\'postbypost\' => __( \'Post By Post\', \'custom\' ),
\'alpha\' => __( \'Alphabetical\', \'custom\' )
);
$format_list = array(
\'html\' => __( \'HTML\', \'custom\' ),
\'option\' => __( \'Dropdown\', \'custom\' ),
\'custom\' => __( \'Custom\', \'custom\' )
);
$order_list = array(
\'ASC\' => __( \'Ascending (A-Z)\', \'custom\' ),
\'DESC\' => __( \'Descending (Z-A)\', \'custom\' )
);
?>
<p>
<label><?php _e( \'Title:\', \'custom\' ); ?><br>
<input type="text" class="widefat" name="<?php echo $this->get_field_name( \'title\' ); ?>"
value="<?php echo esc_attr( $instance[\'title\'] ); ?>">
</label>
</p>
<p>
<label><?php _e( \'Type:\', \'custom\' ); ?><br>
<select class="widefat" name="<?php echo $this->get_field_name( \'type\' ); ?>">
<?php foreach ( $type_list as $option_value => $option_label ) { ?>
<option value="<?php echo esc_attr( $option_value ); ?>" <?php selected( $instance[\'type\'], $option_value ); ?>><?php echo esc_html( $option_label ); ?></option>
<?php } ?>
</select>
</label>
</p>
<p>
<label><?php _e( \'Limit:\', \'custom\' ); ?><br>
<input type="number" class="widefat" min="0" name="<?php echo $this->get_field_name( \'limit\' ); ?>"
value="<?php echo esc_attr( $instance[\'limit\'] ); ?>" />
</label>
</p>
<p>
<label><?php _e( \'Format:\', \'custom\' ); ?><br>
<select class="widefat" name="<?php echo $this->get_field_name( \'format\' ); ?>">
<?php foreach ( $format_list as $option_value => $option_label ) { ?>
<option value="<?php echo esc_attr( $option_value ); ?>" <?php selected( $instance[\'format\'], $option_value ); ?>><?php echo esc_html( $option_label ); ?></option>
<?php } ?>
</select>
</label>
</p>
<p>
<label>
<input class="checkbox" type="checkbox" <?php checked( $instance[\'show_post_count\'] ); ?>
name="<?php echo $this->get_field_name( \'show_post_count\' ); ?>" />
<?php _e( \'Show post count\', \'custom\' ); ?>
</label>
</p>
<p>
<label><?php _e( \'Order:\', \'custom\' ); ?><br>
<select class="widefat" name="<?php echo $this->get_field_name( \'order\' ); ?>">
<?php foreach ( $order_list as $option_value => $option_label ) { ?>
<option value="<?php echo esc_attr( $option_value ); ?>" <?php selected( $instance[\'order\'], $option_value ); ?>><?php echo esc_html( $option_label ); ?></option>
<?php } ?>
</select>
</label>
</p>
<?php
}
/**
* Sanitize widget form values as they are saved.
*
* @see WP_Widget::update()
*
* @param array $new_instance Values just sent to be saved.
* @param array $old_instance Previously saved values from database.
*
* @return array Updated safe values to be saved.
*/
public function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$new_instance = wp_parse_args( (array) $new_instance, self::get_defaults() );
$instance[\'title\'] = trim(strip_tags($new_instance[\'title\']));
$instance[\'type\'] = $new_instance[\'type\'];
$instance[\'limit\'] = intval( $new_instance[\'limit\'] );
$instance[\'limit\'] = $instance[\'limit\'] === 0 ? \'\' : $instance[\'limit\'];
$instance[\'format\'] = $new_instance[\'format\'];
$instance[\'show_post_count\'] = $new_instance[\'show_post_count\'] ? 1 : 0;
/*$instance[\'show_post_count\'] = 1;
if( !isset( $new_instance[\'show_post_count\'] ) || empty( $new_instance[\'show_post_count\'] ) ) {
$instance[\'show_post_count\'] = 0;
}*/
$instance[\'order\'] = $new_instance[\'order\'];
return $instance;
}
/**
* Render an array of default values.
*
* @return array default values
*/
private static function get_defaults() {
$defaults = array(
\'title\' => __( \'Archives\', \'custom\' ),
\'description\' => \'\',
\'type\' => \'monthly\',
\'limit\' => 10,
\'format\' => \'html\',
\'show_post_count\' => 0,
\'order\' => \'DESC\'
);
return $defaults;
}
}
function custom_archives_register_widget() {
register_widget( \'Custom_Archives_Widget\' );
}
add_action( \'widgets_init\', \'custom_archives_register_widget\' );
