php within html within php

Question

I use an extension called Custom Field Suite to import info from a csv in order to batch create posts. In order to display the form fields I use <?php echo CFS()->get('image_location'); ?> One type of information I import is image sources which I display images using <img src="<?php echo CFS()->get('image_location'); ?>" class="preview" alt="image thumbnail" /> This works great without any problems.

But, I want the images to link to the next post using next_post_link. I've seen <?php next_post_link('%link','<img src="IMAGELINK"/>'); ?> but I can't quite figure out how to combine the two bits of php into a whole.

I've tried <?php next_post_link('%link','<img src="echo CFS()->get('image_location')"/>'); ?> but get a syntax error. Any advice would be helpful.

Answer 1

You can format it as, there's also no need to put the echo

<?php next_post_link('%link',"<img src=" . CFS()->get('image_location') . "/>"); ?>

CFS()->get('image_location') gets the field based on the current post id. If you want to use it for the next or previous, you have to pass the next or previous posts ID.

You can do something like this:

$next_post = get_adjacent_post( true, '', false, 'taxonomy_slug' );
$next_post_id = '';
if ( is_a( $next_post, 'WP_Post' ) )
    $next_post_id = $next_post->ID;
if ( ! empty( $next_post_id ) ) {
    $next_post_image_source = CFS()->get( 'image_location', $next_post_id );
} else {
    $next_post_image_source = "default image";
}

next_post_link('%link',"<img src=" . $next_post_image_source . "/>"); 

No assurance this would work but it should be easy to continue from here

Answer 2

I am able to get the desired functionality using the posts_nav_link template tag. posts_nav_link( '&nbsp;', '&nbsp;', "<img src=" . CFS()->get('artwork_image_location') . ">" ); It looks like the next_post_link template tag is not working for me at all, even with a hard link to an image.