kmca_slider.php

<?php
//Custom Slider
function theme_kmca_teaser_slider($atts, $content)
{
	extract(shortcode_atts(array(
		"class" => "",
		"color" => "",
		"type" => "",
		"title" => "",
		"subtitle" => "",
		"categoryfilter" => "",
		"top_margin" => "page_margin_top_none"		
	), $atts));

		echo '<pre>';
		echo 'categoryfilter';
		var_dump($categoryfilter);
		echo '</pre>';

		$args = array(
			'post_type' => 'classes',
			'post_status' => 'publish',
			'category_name' => $categoryfilter
			);
		
		$posts_array = new WP_Query( $args );

/*		echo '<pre>';
		// echo 'categoryfilter';
		var_dump($args);
		echo '</pre>';
		$posts_array = new WP_Query( $args );
		echo '<pre>';
		var_dump($posts_array);
		echo '</pre>';*/

				if($posts_array->have_posts())
				{
					while ( $posts_array->have_posts() ) {
					$posts_array->the_post();
					echo '<div>' . get_the_title() . '</div>';
					}
				}

				// return $output

}

add_shortcode("kmca_teaser_slider", "theme_kmca_teaser_slider");
// add_shortcode("KMCA Teaser Slider", "kmca_teaser_slider");



//visual composer
wpb_map( array(
	"name" => __("KMCA Teaser Slider", 'kmcabase'),
	"base" => "kmca_teaser_slider",
	"class" => "",
	"controls" => "full",
	"show_settings_on_create" => true,
	"icon" => "icon-wpb-layer-items-list",
	"category" => __('KmcaBase', 'kmcabase'),
	"params" => array(
		array(
			"type" => "textfield",
			"class" => "",
			"heading" => __("Extra class name", 'kmcabase'),
			"param_name" => "class",
			"description" => __("Specifies the custom css class for the list.", 'kmcabase'),
			"value" => ""
		),
		array(
			"type"=> "textfield",
			"class=" => "",
			"heading" => __("Title", 'kmcabase'),
			"param_name" => "title",
			"value" => ""
		),
		array(
			"type"=> "textfield",
			"class=" => "",
			"heading" => __("Subtitle", 'kmcabase'),
			"param_name" => "subtitle",
			"value" => ""
		),
		array(
			"type" => "textfield",
			"class" => "",
			"heading" => __("Category Filter", 'kmcabase'),
			"param_name" => "categoryfilter",
			"description" => __("If you want to narrow output, enter category names here. Note: Only listed categories will be included. Divide categories with linebreaks (Enter) .", 'kmcabase'),
			"value" => ""
		),
	)
));
?>