Posted 2 years ago #
This week's project is to figure out a way to pass a list of a post's categories to a function in order to pass back some related posts that may also be of interest to a reader. I'm using Exec-PHP plug-in to do stuff like this from within a post.
I think I've got it down that I could this manually building an array, but I'd prefer if there was a pre-existing function that I'm currently not aware of that I could hit.
Any advice?
Posted 2 years ago #
Have you tried this plugin?
http://wordpress.org/extend/plugins/yet-another-related-posts-plugin/
Posted 2 years ago #
I haven't, but I'm going to try to do this without upping my overhead. That, and the fact that I'm so darn close.
wp_get_post_categories($post->ID) will return an array of the post's category ids;
works in single.php, no idea if it will work from within a post.
Posted 2 years ago #
alchymyth - that doesn't seem to be working. It seems to be passing every category, not just the post specific ones.
Here's my call from within the post:
<?php
$bookID = $post->ID;
$inCats = wp_get_post_categories($post->ID);
// alchymyth's suggestion
listRelated($inCats, $bookID);
?>And here's my function:
function listRelated($inCats, $bookID) {
$args = array(
'category__in' => $inCats,
'post__not_in' => $bookID,
'orderby' => 'modified',
'order' => 'DESC',
'post_type' => 'post',
'post_status' => 'publish',
'posts_per_page' => 5,
'caller_get_posts'=> 1
);
$my_query1 = new WP_Query($args);
while ($my_query1->have_posts()) : $my_query1->the_post();
$do_not_duplicate1 = $post->ID; ...Any other ideas how to auto-pass the categories?
i tried echoing the varibles, and '$post->ID' does not seem to hold the post's id;
(you probably got an empty array, which lead to the query to show all categories)
however, i tried 'get_the_ID()' and it seems to work:
(ps - i never know when to use one or the other - lol)
<?php
$bookID = get_the_ID();
$inCats = wp_get_post_categories($bookID);
// alchymyth's suggestion
// echo $bookID; print_r($inCats);
listRelated($inCats, $bookID);
?>only tried the echo code and had your function call commented, and it showed the post id and the category ids of the post.
Posted 2 years ago #
Thanks, I'll have to give that a whirl when I've got some time.
Posted 2 years ago #
Thanks. This will definitely help me a lot. I will share this to my friends as well.
[signature moderated Please read the Forum Rules]
Posted 2 years ago #
That does work much better, but because my site's a bit of a pain in the butt, I'm going to throw another wrench into the works...
There are 2 category IDs I want to exclude, BUT they are the main parent categories, fiction & non-fiction, for all other books. If I put in a category__not_in statement after the category__in statement I loose everything.
Is there a simple way to take the array once it's passed to the function and say drop these 2 values but keep all the others?
Posted 2 years ago #
Answered my own question by visiting this page:
http://www.scriptygoddess.com/archives/2004/09/21/php-remove-an-element-from-an-array/
I guess I'm marking as resolved now.
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