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<?php
/**
 * Customize the Read More Button
**/
function helpwp_modify_read_more_link() {
    return '<a class="more-link btn btn-sm btn-primary" href="' . get_permalink() . '">View Tutorial</a>';
}
add_filter( 'the_content_more_link', 'helpwp_modify_read_more_link' );

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/* Posts Navigation */
.pagination {
	margin-top: 30px;
	justify-content: center;

	.page-numbers {
		border: 1px solid rgba(0,0,0,.2);
		padding: 8px;
		border-radius: 3px;

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<div class="entry-video">
	<?php 
	$url = get_post_meta( get_the_ID(), 'helpwp_url', true);
	$yt_id = helpwp_youtube_id($url); 

	if ($url != '') : ?>
		<div class="embed-responsive embed-responsive-16by9">
			<iframe class="embed-responsive-item" src="//www.youtube.com/embed/<?php echo esc_html( $yt_id ); ?>" allowfullscreen></iframe>
		</div>

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<?php 
  	$url = get_post_meta( get_the_ID(), 'helpwp_url', true);
	$yt_id = helpwp_youtube_id($url);

	if ($url != '') : ?>
		<a href="<?php the_permalink(); ?>">
			<img alt="<?php the_title(); ?>" class="card-img-top" src="https://img.youtube.com/vi/<?php echo esc_html( $yt_id ); ?>/maxresdefault.jpg">
		</a>

	<?php else : ?>

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<?php
/**
 * Get the ID of a YouTube Video
**/ 
function helpwp_youtube_id($url){
	/*
	* type1: http://www.youtube.com/watch?v=9Jr6OtgiOIw
	* type2: http://www.youtube.com/watch?v=9Jr6OtgiOIw&feature=related
	* type3: http://youtu.be/9Jr6OtgiOIw
	*/

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<?php
		$text  = get_post_meta( get_the_ID(), '_yourprefix_text', true );
		$email = get_post_meta( get_the_ID(), '_yourprefix_email', true );
		$url   = get_post_meta( get_the_ID(), '_yourprefix_url', true );
		echo esc_html( $text );
		echo is_email( $email );
		echo esc_url( $url );
?>

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/**
 * Meta Boxes.
 */
require get_template_directory() . '/inc/meta-boxes.php';

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add_action( 'cmb2_admin_init', 'cmb2_sample_metaboxes' );
/**
 * Define the metabox and field configurations.
 */
function cmb2_sample_metaboxes() {

	// Start with an underscore to hide fields from custom fields list
	$prefix = '_yourprefix_';

	/**

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<a href="<?php the_permalink(); ?>">
	<?php the_post_thumbnail( 'full', array('class' => 'card-img-top')); ?>
 </a>

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/**
 * Changes the class on the custom logo in the header.php
 */
function helpwp_custom_logo_output( $html ) {
	$html = str_replace('custom-logo-link', 'navbar-brand', $html );
	return $html;
}
add_filter('get_custom_logo', 'helpwp_custom_logo_output', 10);