Mixit Up and Isotope Dynamic

mixitORisotop.php

http://webdgallery.com/how-to-dynamic-mixitup-or-isotop-in-wordpress/
functions.php
/**
* Adds terms from a custom taxonomy to post_class
*/
	add_filter( 'post_class', 'theme_t_wp_taxonomy_post_class', 10, 3 );
			function theme_t_wp_taxonomy_post_class( $classes, $class, $ID ) {
			$taxonomy = 'filters';
			$terms = get_the_terms( (int) $ID, $taxonomy );
			if( !empty( $terms ) ) {
				foreach( (array) $terms as $order => $term ) {
					if( !in_array( $term->slug, $classes ) ) {
					$classes[] = $term->slug;
					}
				}
			}
			return $classes;
		}
--------------------------------
portfolio te bosbe

<section id="portfolio">
        <div class="container">
             <?php
                $one_port_tit = ot_get_option('one_port_tit');
                $onepage_port_para = ot_get_option('onepage_port_para');
                    
            ?>
            <div class="section-header">
                <h2 class="section-title text-center wow fadeInDown"><?php echo esc_html( $one_port_tit ); ?></h2>
                <p class="text-center wow fadeInDown"><?php echo esc_textarea( $onepage_port_para ); ?></p>
            </div>

            <div class="text-center">                         
                <!-- Filters -->
                <?php if(!is_tax()) {
                    $terms = get_terms("filters");
                    $count = count($terms);
                    if ( $count > 0 ){ ?>
                        <ul class="portfolio-filter">
                            <li><a class="active"data-filter="*"><?php  _e('All Works', 'onepage'); ?></a></li>
                    <?php
                        foreach ( $terms as $term ) {
                            echo '<li><a href="'.get_permalink().'" data-filter=".'.$term->slug.'">'.$term->name.'</a></li>';

                        } ?>

                    </ul>
                <?php } } ?>                       
            </div>
            
            <div class="portfolio-items">                            
                 <?php
                    global $post;
                    $args = array( 'post_type'=> 'portfolio', 'posts_per_page' => -1,'pagename=portfolio');
                    $myposts = get_posts( $args );
                    foreach( $myposts as $post ) : setup_postdata($post); ?>
                
                <?php 
                     $portimage = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), 'portimage' ); 
                     $portlarge = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), 'portlarge' ); 
                 ?> 
                        
                <div <?php post_class ('portfolio-item'); ?>> // 'portfolio-item' class er name
                    <div class="portfolio-item-inner">
                        <img class="img-responsive" src="<?php echo $portimage[0];?>" alt="">
                        <div class="portfolio-info">
                            <h3><?php the_title(); ?></h3>
                            <?php the_content(); ?>
                            <a class="preview" href="<?php echo $portlarge[0];?>" rel="prettyPhoto"><i class="fa fa-eye"></i></a>
                        </div>
                    </div>
                </div><!--/.portfolio-item-->
                
                <?php endforeach; ?>    	                                        
                <?php wp_reset_postdata(); ?>	
 
            </div>
        </div><!--/.container-->
    </section><!--/#portfolio-->