How to create wordpress widget by using shortcode - wordpress

Question

I want to create a widget that will be created in wordpress when the shortcode is activated in a post. I tried to get some things to $all and then return it but didnt work out. I want to do it without using any plugins.
function movie($atts) {
class wpb_widget extends WP_Widget {
function __construct() {
parent::__construct(
// Base ID of your widget
'wpb_widget',
// Widget name will appear in UI
__('WPBeginner Widget', 'wpb_widget_domain'),
// Widget description
array( 'description' => __( 'Sample widget based on WPBeginner Tutorial', 'wpb_widget_domain' ), )
);
}
// Creating widget front-end
// This is where the action happens
public function widget( $args, $instance ) {
$title = apply_filters( 'widget_title', $instance['title'] );
// before and after widget arguments are defined by themes
global $wpdb;
$b = shortcode_atts(array(
'name' => 'Deadpool',
), $atts);
$vypis = $wpdb->get_row ("SELECT * FROM hodnoceni WHERE nazev = '" . $atts['name'] . "'", ARRAY_A);
$all = $args['before_widget'];
if ( ! empty( $vypis['nazev'] ) )
// This is where you run the code and display the output
$all .= $args['before_title'] . $title . $args['after_title'] . '<p style="margin:0px;">' . $vypis['rok'] . '<br>' . $vypis['delka'] . ' min</p><div class="my-image"><img src="' . $vypis['src'] . '" height="130" alt="' . $vypis['nazev'] . '"> </div> <div class="my-content">' . $vypis['clanek'] . '</div> </div>';
$all .= $args['after_widget'];
}
// Widget Backend
public function form( $instance ) {
if ( isset( $instance[ 'title' ] ) ) {
$title = $instance[ 'title' ];
}
else {
$title = __( 'New title', 'wpb_widget_domain' );
}
// Widget admin form
?>
<p>
<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></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>
<?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'] ) : '';
return $instance;
}
} // Class wpb_widget ends here
return $all;
}
function wpb_load_widget() {
register_widget( 'wpb_widget' );
}
add_action( 'widgets_init', 'wpb_load_widget' );
function register_shortcodes(){
add_shortcode('bacon', 'bacon_function');
add_shortcode('movie_form', 'movie_form');
add_shortcode('movie', 'movie');
}
add_action( 'init', 'register_shortcodes');

Answer 1

For your widget class "wpb_widget" you can use this code:
<?php add_shortcode( 'show_movie', 'movie_shortcode' );
function movie_shortcode( $atts ) {
// Configure defaults and extract the attributes into variables
extract( shortcode_atts(
array(
'type' => 'wpb_widget'
),
$atts
));
$args = array( //optional markup:
'before_widget' => '<div class="box widget scheme-' . $scheme . ' ">',
'after_widget' => '</div>',
'before_title' => '<div class="widget-title">',
'after_title' => '</div>',
);
ob_start();
the_widget( $type, $atts, $args );
$output = ob_get_clean();
return $output;
}
and then use this code
[show_movie]
to run the widget.