Post navigation using date

Question

On my site: www.finmand.dk/almastofa/nyheder (a danish site) I have used this code to navigate between the post:

<?php foreach(get_the_category() as $category)
{ $thecat = $category->cat_ID; } ?>
<?php $result = "<ul class='lcp_catlist'>";
$catposts = get_posts('category='.$thecat."&orderby=monthly=asc&numberposts=".$NUMBEROFPOSTS);
foreach($catposts as $single):
    $result .= "<li><a href='";
    $result .=get_permalink($single->ID)."'>".$single->post_title."</a></li>";
endforeach;
$result .= "</ul>";
echo $result; ?>

This right thing about the code is that it only shows on the News page /Nyheder.

Problem is It only shows the newest post, and links to a page called sample-post. Which I don't have, so I get page not found. I would like it to link to page.php or single.php. But I can't figure out where to change it in the code. And I would like the navigation in the sidebar to be shown by Month and year posted. Not as now with name. But again - Beginner programmer with zero luck. So can anybody give me a hint on what to write?

I know I may be playing with the big boys now regarding knowledge about "heavy" programming, and my problem may seem insignificant - but we all have to start somewhere. Hopeful Thanks Marlene

Answer 1

If you're trying to navigate between posts in the same category, would next_post_link()/previous_post_link() work for you?

These functions have an $in_same_cat argument, that would appear to suit your needs?

EDIT:

Here is a Plugin, WP Category Archives, that might point you in the right direction? It purports to display:

...a monthly or yearly archive of posts for one specific category. It is very similar to the WordPress Archive except that it just displays one specific category's posts, not all categories. It can be configured to either show a listing or a pulldown by month or year with or without post counts.