Search.php with Portfolio External url fix .

<?php get_header(); ?>

<script>
jQuery(document).ready(function($){

	var $searchContainer = $('#search-results');

	$(window).load(function(){

		$searchContainer.isotope({
		   itemSelector: '.result',
		   layoutMode: 'packery',
		   packery: { columnWidth: $('#search-results').width() / 3 }
		});

		$searchContainer.css('visibility','visible');

	});

	$(window).resize(function(){
	   $searchContainer.isotope({
	   	  layoutMode: 'packery',
	      packery: { columnWidth: $('#search-results').width() / 3}
	   });
	});


});
</script>

<div class="container-wrap">

	<div class="container main-content">

		<div class="row">
			<div class="col span_12">
				<div class="col span_12 section-title">
					<h1><?php echo __('Results For', NECTAR_THEME_NAME); ?><span>"<?php echo esc_html( get_search_query( false ) ); ?>"</span></h1>
				</div>
			</div>
		</div>

		<div class="divider"></div>

		<div class="row">

			<div class="col span_9">

				<div id="search-results">

					<?php if(have_posts()) : while(have_posts()) : the_post(); ?>



							<?php if( get_post_type($post->ID) == 'post' ){ ?>
								<article class="result">
									<div class="inner-wrap">
										<span class="bottom-line"></span>
										<?php if(has_post_thumbnail( $post->ID )) {
											echo '<a href="'.get_permalink().'">'.get_the_post_thumbnail($post->ID, 'full', array('title' => '')).'</a>';
										} ?>
										<h2 class="title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a> <span><?php echo __('Blog Post', NECTAR_THEME_NAME); ?></span></h2>
									</div>
								</article><!--/search-result-->
							<?php }

							else if( get_post_type($post->ID) == 'page' ){ ?>
								<article class="result">
									<div class="inner-wrap">
										<span class="bottom-line"></span>
										<h2 class="title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a> <span><?php echo __('Page', NECTAR_THEME_NAME); ?></span></h2>

										<?php if(has_excerpt()) the_excerpt(); ?>
									</div>
								</article><!--/search-result-->
							<?php }

							else if( get_post_type($post->ID) == 'portfolio' ){ ?>
								<article class="result">
									<div class="inner-wrap">
										<span class="bottom-line"></span>

										<?php
										$custom_project_link = get_post_meta($post->ID, '_nectar_external_project_url', true);
					 					 $the_project_link = (!empty($custom_project_link)) ? $custom_project_link : get_permalink();
					 					 console.log($the_project_link);

										if(has_post_thumbnail( $post->ID )) {
											echo '<a href="'.$the_project_link.'">'.get_the_post_thumbnail($post->ID, 'full', array('title' => '')).'</a>';
										} ?>



										<h2 class="title"><a href="<?php echo $the_project_link; ?>"><?php the_title(); ?></a> <span><?php echo __('Portfolio Item', NECTAR_THEME_NAME); ?></span></h2>
									</div>
								</article><!--/search-result-->
							<?php }

							else if( get_post_type($post->ID) == 'product' ){ ?>
								<article class="result">
									<div class="inner-wrap">
										<span class="bottom-line"></span>
										<?php if(has_post_thumbnail( $post->ID )) {
											echo '<a href="'.get_permalink().'">'. get_the_post_thumbnail($post->ID, 'full', array('title' => '')).'</a>';
										} ?>
										<h2 class="title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a> <span><?php echo __('Product', NECTAR_THEME_NAME); ?></span></h2>
									</div>
								</article><!--/search-result-->
							<?php } else { ?>
								<article class="result">
									<div class="inner-wrap">
										<span class="bottom-line"></span>
										<?php if(has_post_thumbnail( $post->ID )) {
											echo '<a href="'.get_permalink().'">'.get_the_post_thumbnail($post->ID, 'full', array('title' => '')).'</a>';
										} ?>
										<h2 class="title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
									</div>
								</article><!--/search-result-->
							<?php } ?>



					<?php endwhile;

					else: echo "<p>" . __('No results found', NECTAR_THEME_NAME) . "</p>"; endif;?>


				</div><!--/search-results-->


				<?php if( get_next_posts_link() || get_previous_posts_link() ) { ?>
					<div id="pagination">
						<div class="prev"><?php previous_posts_link('&laquo; Previous Entries') ?></div>
						<div class="next"><?php next_posts_link('Next Entries &raquo;','') ?></div>
					</div>
				<?php }?>

			</div><!--/span_9-->

			<div id="sidebar" class="col span_3 col_last">
				<?php get_sidebar(); ?>
			</div><!--/span_3-->

		</div><!--/row-->

	</div><!--/container-->

</div><!--/container-wrap-->

<?php get_footer(); ?>