Raindrops　取扱説明書

functions.php　

チャイルドテーマのfunctions.phpに以下のPHPコードを追加

	
function raindrops_prev_next_post( $position= "nav-above" ) {

	$previous_image	= '';
	$next_image		= '';

	if ( is_category() ) {

		$filter= true; //display same category.
	} else {

		$filter= false;
	}
	if ( !is_single() ) {
		return $original;
	} else {

		$previous	= get_adjacent_post( false, '', true );
		$next		= get_adjacent_post( false, '', false );

		if ( has_post_thumbnail( $previous->ID ) ) {

			$previous_image= get_the_post_thumbnail( $previous->ID, array( 48, 48 ) );
		}
		if ( has_post_thumbnail( $next->ID ) ) {

			$next_image= get_the_post_thumbnail( $next->ID, array( 48, 48 ) );
		}
	}
	//exclude separate 'and'
	$exclude_category	= apply_filters( 'raindrops_next_prev_excluded_categories', '' );
	$html				= '<div id="%1$s" class="%2$s"><span class="%3$s">';
	printf( $html, $position, "clearfix", "nav-previous" );
	previous_post_link( '%link', $previous_image . '<span class="button"><span class="meta-nav">&laquo;</span> %title</span>', $filter, $exclude_category );
	$html				= '</span><div class="%1$s">';
	printf( $html, "nav-next" );
	next_post_link( '%link', '<span class="button"> %title <span class="meta-nav">&raquo;</span></span>' . $next_image, $filter, $exclude_category );
	$html				= '</div></div>';
	echo apply_filters( "raindrops_prev_next_post", $html );
}

CSS

チャイルドテーマのstyle.css
又は、
カスタマイズ/高度な設定/サイトワイドCSSに追加

.single #nav-below{
 margin-top:1em;
 position:relative;
}
.single .nav-next .button{
 margin-right:50px;
}
.single .nav-previous .button{
 margin-left:50px;
}
.single .nav-next a:after,
.single .nav-previous a:before{
 display:none;
}
.single .nav-next img{
 position:absolute;
 right:0;
}
.single .nav-previous img{
 position:absolute;
 left:0; 
}