John Davidson

Message:

How do allow users to change the order of posts, based on custom fields?

For example :

First custom field: Value1, second custom field: Value2.

In archive page, the posts are presented in order of the value 1 by default, and a filter (links) allows to order them according to the value 1 or 2.

---

My Answer:
To allow users to change the sort order of posts based on custom fields, you can create a custom query in your archive page template. Here's an example of how you can achieve this:

1. Create a filter menu with links for users to change the sort order. For example, you can create links like "Sort by Value1" and "Sort by Value2".

2. In your archive page template, add the following code to retrieve the posts based on the custom field value selected by the user:

php
$orderby = 'meta_value'; // Default sort order by custom field value 1
$order = 'ASC'; // Default order

if( isset( $_GET['sort_by'] ) ) {
if( $_GET['sort_by'] == 'value2' ) {
$orderby = 'meta_value_num'; // Sort by custom field value 2
}
}

$args = array(
'post_type' => 'post',
'meta_key' => 'custom_field_name', // Replace with your custom field name
'orderby' => $orderby,
'order' => $order
);

$query = new WP_Query( $args );

if( $query->have_posts() ) {
while( $query->have_posts() ) {
$query->the_post();
// Display your post content here
}
}


3. Update the 'custom_field_name' with the actual custom field name you want to sort by.

4. Add the filter links in your archive page template to allow users to change the sort order:

html

Sort by Value1
Sort by Value2

With this setup, users can click on the filter links to change the sort order of posts based on the custom field values. The posts will be displayed in the selected order on the archive page.