Get post related on category

Question

it's a catalog website for different product. I need a function that will get the category of the selected product, and get all the product from that category

Let see an example. A table, is in wood category and kitchen. So when display table, under the table i like all the other kitchen product listed as well as all the other wood product... it good for cross selling !...

how do i do that ?

Answer 1

You can use WP_Query's tax_query to do this. You would want the args (just on the tax_query, I'll leave the rest up to you, you have the documentation) to look something like this:

'tax_query' => array(
    'relation' => 'OR'
    array(
        'taxonomy' => 'category',
        'field'    => 'slug',
        'terms'    => 'wood'
    ),
    array(
        'taxonomy' => 'category',
        'field'    => 'slug',
        'terms'    => 'kitchen'
    )
),

That method will allow you to query as many types of posts as you like. Alternatively, you can have multiple WP_Querys and use wp_get_post_categories() to get the terms for a foreach to feed dynamically generated suggestions, each with its own WP_Query. It sorta depends how you want the output to look.