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ShawnRamsey

I'm currently working on a WP theme using version 3.1.1 and have a small issue with category.php pagination. For design/aesthetic reasons, I wish to show the 'previous entries' and 'newer entries' at all times including first and last pages. I realize that 'newer entries' on the first paginated page would lead to nowhere, but need it to be displayed. For the life of me I can't solve this problem and would appreciate any help.

Thanks,
Shawn

magnuseide

Hi
use get_previous_post() and get_next_post(), instead of previous_post_link() and next_post_link(). The latter to do not return anything, making it hard to determine if they printed anything (e.g. are on first or last post). You can then check there is a next or previous post with empty(), and create a conditional statement for echoing out a placeholder when there is no next/previous post.

There does not seem to be a return version of next and previous_post_link() functions.


<?php
		$prev_post = get_previous_post();
		$next_post = get_next_post();
		if (empty($prev_post)) {
		    echo '<span>Previous placeholder</span>';
		}
		else {
		    $prev_link = get_permalink($prev_post->ID);
		    echo '<a href="'.$prev_link.'">'.get_the_title($prev_post->ID).'</a>';
		}

		if (empty($next_post)) {
		    echo '<span>Next placeholder</span>';
		}
		else {
		    $next_link = get_permalink($next_post->ID);
		    echo '<a href="'.$next_link.'">'.get_the_title($next_post->ID).'</a>';
		}

?>

ShawnRamsey

Almost what I'm looking for, magnuseide, but not quite. Thank you for responding.

I tried the above code and it lists the next and previous posts, rather than the next and previous pages. Maybe I should rephrase the question.

I have a category.php page that lists all posts filed under a specific category. This page lists the 9 most recent posts and then kicks in the pagination for page 2, displaying posts 10-18, etc. It is on this category.php page that I wish to display 'previous entries' and 'newer entries' at all times, especially the first and last pages.

magnuseide

Ahh, i see, then my solution won't work for you.
This should do the trick:


<?php
	global $wp_query;
	//get current page
	$page = get_query_var('paged');
	//gets total pages
	$total_pages = absint( $wp_query->max_num_pages );

		//if it's the first page, echo placeholder
		if ($page == '0') {
		    echo '<span>Previous placeholder</span>';
		    //and set variable to 1 to make it work in next function
		    $page = 1;
		}
		//or echo link to previous page
		else {
		    echo '<a href="'.get_pagenum_link($page -1).'">Previous page</a>';
		}

		//if it's current page is the same as total number of pages, echo placeholder
		if ($page == $total_pages) {
		    echo '<span>Next placeholder</span>';
		}
		// else echo link to next page
		else {
		    echo '<a href="'.get_pagenum_link($page + 1).'">Next page</a>';
		}
?>

ShawnRamsey

Worked perfectly! Thank you very much, magnuseide. You clearly know your stuff. I couldn't find much documentation on this and resorted to this forum as a last-ditch effort. This is my first time in here and I'm thoroughly impressed with the outcome. Again, thank you.

magnuseide

Thanks Shawn
Just fyi I did some edits to my post, added some comments and made some minor adjustments.

This is actually my first time on these forums myself. Been a long time reader of css-tricks though. I wrote a function for some advanced page navigation in wordpress for a theme a few months ago and learned a lot about how WP handles pagination. It's not well documented, and most of it I learned from reading the source files of the WP-PageNavi plugin.

ShawnRamsey

Thanks for the tweaks and for commenting the code. I used the WP-PageNavi plugin on an older blog for a good part of a year. I never thought about peaking at the code and making use of it. I really appreciate your help.

wanderson

Hi guys!
After a week trying everything, trying lots of tutorials and advices, read meny forum and support I can´t put the wp page navi to work. When I click the numbers I got "Not Found". Can you help me? Thanks in advance.

Here is my code.

<?php query_posts ('showposts=5&cat=3'); ?>
<?php if ( have_posts() ) : while ( have_posts() ) : the_post();?>

<?php echo strtoupper(get_the_time('F')); ?>

<?php the_time('d'); ?>

<?php the_title(); ?>

<?php the_content('Read More +');?>

<?php endwhile; else: ?>
<?php endif; ?>

<?php wp_pagenavi(); ?>

cybershot

@magnuseide

I saw your code above and thought maybe it could be used to solve my problem. I tried it and it does show pagination but unfortunately, I get the no posts found search page when it should actually show a page. I am trying to get pagination for posts but just can't figure out how to do it. If you have time, please refer to this post that I made for the information

http://wordpress.stackexchange.com/questions/67836/how-to-paginate-get-categories

can you help?

treehouse : what would you like to learn today?

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WordPress Pagination

<?php echo strtoupper(get_the_time('F')); ?>

<?php the_title(); ?>