我今天在这里学到了一些新东西post.
我已经为Post小部件编写了代码→
<?php
class chimp_post_widget extends WP_Widget {
function __construct() {
//Create Widget
parent::__construct(
\'post_display_widget\',
esc_html__(\'The Post Widget\',\'simplisto\'),
array(
\'classname\' => \'post-widget\',
\'description\' => esc_html__(\'A Post Thumbnail Widget\', \'simplisto\' )
)
);
}
public function form( $instance ) {
$title = isset( $instance[\'title\'] ) ? $instance[\'title\'] : \'\';
$number_of_posts = isset( $instance[\'number_of_posts\'] ) ? absint( $instance[\'number_of_posts\'] ) : 5;
$number_of_words = isset( $instance[\'number_of_words\'] ) ? absint( $instance[\'number_of_words\'] ) : 20;
$cat_include = isset( $instance[\'cat_include\'] ) ? $instance[\'cat_include\'] : \'\';
$cat_exclude = isset( $instance[\'cat_exclude\'] ) ? $instance[\'cat_exclude\'] : \'\';
$vertical_sidebar_check = isset( $instance[ \'vertical_sidebar_check\' ] ) && ( \'on\' === $instance[ \'vertical_sidebar_check\' ] ) ? \'on\' : \'off\';
?>
<p><label for="<?php echo $this->get_field_id( \'title\' ); ?>"><?php _e( \'Title:\', \'simplisto\' ); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id( \'title\' ); ?>" name="<?php echo $this->get_field_name( \'title\' ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" /></p>
<p><label for="<?php echo $this->get_field_id( \'number_of_posts\' ); ?>"><?php _e( \'Number of projects to show:\', \'simplisto\' ); ?></label>
<input class="tiny-text" id="<?php echo $this->get_field_id( \'number_of_posts\' ); ?>" name="<?php echo $this->get_field_name( \'number_of_posts\' ); ?>" type="number" step="1" min="1" value="<?php echo $number_of_posts; ?>" size="3" /></p>
<p><label for="<?php echo $this->get_field_id( \'number_of_words\' ); ?>"><?php _e( \'Set the word limit for project descriptions:\', \'simplisto\' ); ?></label>
<input class="tiny-text" id="<?php echo $this->get_field_id( \'number_of_words\' ); ?>" name="<?php echo $this->get_field_name( \'number_of_words\' ); ?>" type="number" step="1" min="1" value="<?php echo $number_of_words; ?>" size="4" /></p>
<p><label for="<?php echo $this->get_field_id( \'cat_include\' ); ?>"><?php _e( \'Include Categories:\', \'simplisto\' ); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id( \'cat_include\' ); ?>" name="<?php echo $this->get_field_name( \'cat_include\' ); ?>" type="text" value="<?php echo esc_attr( $cat_include ); ?>" />
<small>Comma separated list of category IDs to <strong>include</strong> in post query. e.g.: 11,17,347<br>If blank, all categories will be included.</small>
</p>
<p><label for="<?php echo $this->get_field_id( \'cat_exclude\' ); ?>"><?php _e( \'Exclude Categories:\', \'simplisto\' ); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id( \'cat_exclude\' ); ?>" name="<?php echo $this->get_field_name( \'cat_exclude\' ); ?>" type="text" value="<?php echo esc_attr( $cat_exclude ); ?>" />
<small>Comma separated list of category IDs to <strong>exclude</strong> in post query. e.g.: 1,16<br>If blank, no categories will be excluded.</small>
</p>
<p><input class="checkbox" type="checkbox" <?php checked( $vertical_sidebar_check, \'on\' ); ?> id="<?php echo $this->get_field_id( \'vertical_sidebar_check\' ); ?>" name="<?php echo $this->get_field_name( \'vertical_sidebar_check\' ); ?>" />
<label for="<?php echo $this->get_field_id( \'vertical_sidebar_check\' ); ?>"><?php _e(\'Select for Vertical Sidebar\', \'simplisto\'); ?></label></p>
<?php
}
public function update($new_instance, $old_instance) {
$instance = $old_instance;
$instance[\'title\'] = sanitize_text_field( $new_instance[\'title\'] );
$instance[\'number_of_posts\'] = absint( $new_instance[\'number_of_posts\'] );
$instance[\'number_of_words\'] = absint( $new_instance[\'number_of_words\'] );
$instance[\'cat_include\'] = sanitize_text_field( $new_instance[\'cat_include\'] );
$instance[\'cat_exclude\'] = sanitize_text_field( $new_instance[\'cat_exclude\'] );
$instance[ \'vertical_sidebar_check\' ] = isset( $new_instance[ \'vertical_sidebar_check\' ] ) && ( \'on\' === $new_instance[ \'vertical_sidebar_check\' ] ) ? \'on\' : \'off\';
return $instance;
}
public function widget($args, $instance) {
extract( $args );
$title = apply_filters( \'widget_title\', $instance[\'title\'] );
/* Display the markup before the widget. */
echo $args[\'before_widget\'];
if ( ! empty( $instance[\'title\'] ) ) {
echo $args[\'before_title\'] . apply_filters( \'widget_title\', $instance[\'title\'] ) . $args[\'after_title\'];
}
$number_of_posts = ( ! empty( $instance[\'number_of_posts\'] ) ) ? absint( $instance[\'number_of_posts\'] ) : 5;
if ( ! $number_of_posts ) {
$number_of_posts = 5;
}
$number_of_words = ( ! empty( $instance[\'number_of_words\'] ) ) ? absint( $instance[\'number_of_words\'] ) : 20;
if ( ! $number_of_words ) {
$number_of_words = 20;
}
// Convert comma separated string to array for use in WP_Query.
$category_include = $instance[\'cat_include\'];
if ( $category_include ) {
$category_include = explode( \',\', $instance[\'cat_include\'] );
} else {
$category_include = array();
}
// Convert comma separated string to array for use in WP_Query.
$category_exclude = $instance[\'cat_exclude\'];
if ( $category_exclude ) {
$category_exclude = explode( \',\', $instance[\'cat_exclude\'] );
} else {
$category_exclude = array();
}
$vertical_sidebar_check = isset( $instance[ \'vertical_sidebar_check\' ] ) && ( \'on\' === $instance[ \'vertical_sidebar_check\' ] ) ? \'on\' : \'off\';
/* Create a custom query and get the most recent x projects. */
$queryArgs = array(
\'category__in\' => $category_include,
\'category__not_in\' => $category_exclude,
/* Order by date. */
\'orderby\' => \'date\',
/* Show all posts. */
\'posts_per_page\' => $number_of_posts,
);
$query = new WP_Query( $queryArgs );
if ( $query->have_posts() ) : ?>
<ul class="unbullet<?php echo $vertical_sidebar_check === \'on\' ? \' unbullet-v\' : \'\'; ?>">
<?php while ( $query->have_posts() ) : $query->the_post(); ?>
<li class="snippet-box<?php echo $vertical_sidebar_check === \'on\' ? \' vertical\' : \'\'; ?>">
<div>
<!-- <img src="http://heightandweights.com/wp-content/uploads/2014/10/Beautiful-Lindsey-Vonn.jpg" alt="" class="hundred"> -->
<?php the_post_thumbnail( \'medium\', array( \'class\' => \'hundred\' ) ); ?>
<div class="snippet-text">
<h3><a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>"><?php the_title(); ?></a></h3>
<p><?php echo wp_trim_words( get_the_excerpt(), $number_of_words , __( \'…\', \'simplisto\' ) ); ?></p>
</div>
</div>
<!-- <a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>"><?php the_post_thumbnail( \'large\', array( \'class\' => \'img-responsive\' ) ); ?></a> -->
</li>
<?php endwhile; ?>
</ul>
<?php endif;
/* Display the markup after the widget. */
echo $after_widget;
}
}
add_action(\'widgets_init\', function(){
register_widget(\'chimp_post_widget\');
})
?>
你认为有什么地方可以写
apply_filters 或者像我这样的新手错过的任何其他类型的消毒。
我认为这篇文章可能有助于各种初学者实现santization和其他对代码质量很重要的功能。
