previous_post_link() : placeholder if first post

  • superuntitled

    (@superuntitled)


    15 years, 11 months ago

    I am having trouble with the previous_post_link() and next_post_link() functionality. When there is no previous post, the function previous_post_link() does not display a link, likewise for the next_post_link() and the last post. I would like to have a placeholder image so that the design stays consistent.

    Currently I have images of green arrows pointing left and right, I would like to place an image of a grey arrow if there are no more posts to go back to.

    Is there a way to use the next_post_link()/previous_post_link() functions but not have the link removed.

    I also wonder if there is a way for the links to cycle, so that if you come to the most recent post, the next post link would bring you back to the first post.

Viewing 4 replies - 1 through 4 (of 4 total)
  • Michael

    (@alchymyth)

    15 years, 11 months ago

    there is this wordpress function get_adjacent_post() that can be used.
    here is the code i use in my themes to do a similar thing to what you want to do.

    as a general idea, the ‘cycling’ could probably be done with some queries (in the cases where you want to show a grey arrow), fetching the permalink to the oldest and latest published post, resp., and then rebuilding a link the same way as the output of ‘prev/next post link’; that would depend on the parameters you use with ‘prev/next post link’.

    giant slayer

    (@giant-slayer)

    15 years, 10 months ago

    I would like to the same thing. But I am not sure how to determine if I am at the first post or the last post.

    I tried

    <?php if(previous_post_link()){
	previous_post_link('&laquo; %link', 'Previous Post: %title', TRUE);
}else{do something} ?>

    I also tried

    <?php $prev=previous_post_link();
if($prev=NULL){
	previous_post_link('&laquo; %link', 'Previous Post: %title', TRUE);
}else{do something} ?>

    Neither returned a null value.

    giant slayer

    (@giant-slayer)

    15 years, 10 months ago

    I think you can do what you want with multiple loops.

    Look at the following code for an idea.

    $categories = get_the_category();
$category = $categories[0];
$catcount = $categories[0]->category_count;
rewind_posts();
query_posts('cat='.strval($category->cat_ID) . "&order=ASC");
$navcount=1;
while(have_posts()) : the_post();
	if ($navcount==1){ ?>
	    <a href="<?php the_permalink()?>" title="<?php the_title() ?>"><?php echo 'First'; ?></a>&nbsp;
  <?php }elseif($navcount==$catcount){ ?>
	    <a href="<?php the_permalink()?>" title="<?php the_title() ?>"><?php echo 'Last'; ?></a>&nbsp;
  <?php }
$navcount++;
endwhile;

    giant slayer

    (@giant-slayer)

    15 years, 10 months ago

    Of course, you will need your opening and closing php tags.

Viewing 4 replies - 1 through 4 (of 4 total)

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