如何将Revolution文章滑块的分类关联设置为AND逻辑？

Absolutely, you can make Revolution Slider display only posts assigned to both Category A AND Category B—the default interface only uses OR logic (showing posts in either category), but we can override this with a custom code snippet using WordPress filters.

Here’s how to do it step by step:

1. Use the revslider_get_posts_query Filter #

Revolution Slider provides a filter hook that lets you modify the underlying WordPress query it uses to fetch posts. We’ll use this to force an "AND" relationship between your target categories.

2. Add the Custom Code #

You can add this code to your theme’s functions.php file (or use a plugin like Code Snippets to avoid losing changes when your theme updates):

add_filter('revslider_get_posts_query', 'revslider_category_and_logic', 10, 2);
function revslider_category_and_logic($query_args, $slider_instance) {
    // Replace 'your-slider-alias' with the alias of your specific slider
    // Find the alias in Revolution Slider's slider list (it's the short, URL-friendly name)
    if ($slider_instance->getAlias() !== 'your-slider-alias') {
        return $query_args; // Leave other sliders untouched
    }

    // Define the categories you want to require (use slugs OR IDs)
    // Example with slugs: array('travel-guides', 'europe-destinations')
    // Example with IDs: array(7, 12)
    $required_categories = array('category-a-slug', 'category-b-slug');

    // Override the tax query to use AND logic
    $query_args['tax_query'] = array(
        'relation' => 'AND',
        array(
            'taxonomy' => 'category',
            'field'    => 'slug', // Change to 'id' if using category IDs
            'terms'    => $required_categories,
        ),
    );

    return $query_args;
}

3. Customize the Code for Your Setup #

• Slider Alias: Replace 'your-slider-alias' with the alias of the slider you want to modify. You can find this in the Revolution Slider dashboard (look for the "Alias" column in the slider list).
• Categories: Update $required_categories with the slugs or IDs of your two target categories. If using IDs, change 'field' => 'slug' to 'field' => 'id'.
• Cache Clear: After adding the code, clear your site’s cache (including Revolution Slider’s internal cache) to ensure the changes take effect.

4. Test the Slider #

Once the code is active, your slider will only load posts that are tagged with both Category A and Category B—exactly the AND logic you need.

Important Notes #

• If you’re not comfortable editing functions.php, use a plugin like Code Snippets to add the code safely.
• This code only affects the specific slider you target with the alias, so other sliders on your site will keep their default behavior.

内容的提问来源于stack exchange，提问作者user2115227