File "widgets.php"

Full Path: /var/www/bvnghean.vn/wp-content/themes/bvnghean/include/widgets.php
File size: 3.29 KB
MIME-type: text/x-php
Charset: utf-8

<?php
// Creating the widget 
class cat_widget extends WP_Widget {
	function __construct() {
		parent::__construct(
			// Base ID of your widget
			'cat_widget',
			// Widget name will appear in UI
			'Category Widget',
			// Widget description
			array( 'description' => 'Hiển thị bài viết theo category', ) 
		);
	}
	// Creating widget front-end
	// This is where the action happens
	public function widget( $args, $instance ) {
		$title = apply_filters( 'widget_title', $instance['title'] );
		$post_number = $instance['post_number'];
		$cat_id = $instance['cat_id'];
		// before and after widget arguments are defined by themes
		echo $args['before_widget'];
		if ( ! empty( $title ) )
			echo $args['before_title'] . $title . $args['after_title'];
		// This is where you run the code and display the output
		$new_query = new WP_Query(array(
			'posts_per_page' => $post_number,
			'cat' => $cat_id
		));
		if ($new_query->have_posts()) : while( $new_query->have_posts() ) : $new_query->the_post(); ?>
			<?php
			$thumb = get_image_src(get_post_thumbnail_id(),'medium');
			?>
 
        	<a class="post-item color-hover-second mb-20" href="<?=the_permalink()?>">
        		<div class="post-thumbnail" style="background-image: url('<?=$thumb?>')"></div>
				<div class="p-15">
					<p href="" class="color-main color-hover-second post-title font-h6"><?=the_title()?></p>
				</div>
        	</a>
 
        <?php endwhile;
        endif;
		echo $args['after_widget'];
	}
	        
	// Widget Backend 
	public function form( $instance ) {
		$default = array(
            'title' => '',
            'post_number' => 3,
           	'cat_id' => 0
        );
        $instance = wp_parse_args( (array) $instance, $default );
        $title = esc_attr($instance['title']);
        $post_number = esc_attr($instance['post_number']);
        $cat_id = esc_attr($instance['cat_id']);
		// Widget admin form
		?>
		<p>Tiêu đề <input class="widefat" id="<?=$this->get_field_id( 'title' )?>" name="<?=$this->get_field_name( 'title' )?>" type="text" value="<?=$title?>" /><p>
		<p>Danh mục
			<select class="widefat" name="<?=$this->get_field_name('cat_id')?>">
				<option value="">Chọn danh mục</option>
				<?php
				$categories = get_categories();
				foreach($categories as $category) {
					$selected = '';
					if($category->term_id==$cat_id) $selected = 'selected';
					echo '<option value="'.$category->term_id.'" '.$selected.'>'.$category->name.'</option>';
				}
				?>
			</select>
		</p>
		<p>Số lượng bài viết hiển thị <input type="number" class="widefat" name="<?=$this->get_field_name('post_number')?>" value="<?=$post_number?>" max="30" /></p>
		<?php 
	}
	    
	// Updating widget replacing old instances with new
	public function update( $new_instance, $old_instance ) {
		$instance = array();
		$instance['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';
		$instance['post_number'] = strip_tags($new_instance['post_number']);
		$instance['cat_id'] = strip_tags($new_instance['cat_id']);
		return $instance;
	}
} // Class cat_widget ends here

// Register and load the widget
function wpb_load_widget() {
    register_widget( 'cat_widget' );
}

add_action( 'widgets_init', 'wpb_load_widget' );
?>