Thanks, John, but I have to adapt this to my code to fully understand it:
I have a range of jewellery (using a Custom Post Type = jewellery) that I separate by Category (using the built in Categories of WP) and Brands (using a custom field to select the brand in the custom post type).
From that I create two separate drop downs: Category with values of IDs of categories, and Brands with values of strings.
So if the user select a Brand from one of the selects and a Category from the other select, the code you provide should look like this, right:
'post_type' => 'jewellery',
'tax_query' => array(
array(
'taxonomy' => 'category',
'terms' => array( $category ) // <-- THIS I GET FROM $_GET['c']
)
),
'meta_query' => array(
array(
'key' => 'select_brand', // <-- WHAT DO I PUT HERE (THE CUSTOM FIELD VALUE, this is what I named it.)
'value' => $brand // <-- THIS I GET FROM $_GET['b']
)
)
