Post Navigation

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Hey there,
i would like to use the order of post thumbnails from a page to navigate from a single post to the next.

Is there a simple way to use the laygridder order as post order?

Ah, interesting.

Well, you would need to go through the JSON of the page's gridder and check the order of the thumbnails.

Try this in your php:

// $id has to be the id of the page you are getting the gridder json from
$gridder_json = get_post_meta( $id, '_gridder_json', true );
// if you need the gridder json of a term do: $gridder_json = get_term_meta( $id, '_gridder_json', true );

// now turn the gridder json into an object:
$obj = json_decode($gridder_json);

// now print the json object into your error.log file. Read more about this here: https://codex.wordpress.org/Debugging_in_WordPress
// to print to your debug.log you need to add this to your wp-config:
// define( 'WP_DEBUG', true );
// define( 'WP_DEBUG_LOG', true );

error_log(print_r($obj, true));

Now in your debug.log you can look at the json structure and traverse through it to find out the order of your thumbnails.

The above can be tricky if you don't have the experience, but it is a great learning opportunity.

You could also use the post order of the post overview:

Use a plugin like "Post Order" https://wordpress.org/plugins/intuitive-custom-post-order/

And then for finding out the next post do a wp_query using orderby => menu_order
https://codex.wordpress.org/Class_Reference/WP_Query

like:

// get all posts of post type "post"
$args = array(
	'posts_per_page' => -1,
	'orderby' => 'menu_order',
	'post_type' => 'post'
);
$all_posts_query = new WP_Query( $args );
if($all_posts_query->have_posts()){
	foreach ($all_posts_query->posts as $post){
		// do something with $post->ID
	}
}

thanks Armin, works like a charme!