WooCommerce中指定产品分类禁用加入购物车按钮技术问询

Hey there! Let’s work through how to disable "Add to Cart" buttons for one product category when a user has selected the other (Juices vs Cleans) in your WooCommerce subscription setup. This involves tracking the user’s selected category server-side and modifying product purchasability based on that choice.

Step 1: Store the User’s Selected Category in WooCommerce Session #

First, we need to save the user’s chosen category to their WooCommerce session when they submit their subscription selection form. Add this code to your theme’s functions.php file (or a custom plugin):

// Save selected subscription category to WooCommerce session
add_action('template_redirect', 'store_selected_category_to_session');
function store_selected_category_to_session() {
    // Check if the form was submitted with a valid category
    if (isset($_POST['selected_category']) && !empty($_POST['selected_category'])) {
        $category_slug = sanitize_text_field($_POST['selected_category']);
        // Verify the category exists in WooCommerce
        $category = get_term_by('slug', $category_slug, 'product_cat');
        
        if ($category) {
            WC()->session->set('selected_subscription_category', $category_slug);
        }
    }
}

Step 2: Disable Add to Cart for Conflicting Categories #

Next, we’ll modify two key WooCommerce filters to disable the "Add to Cart" button and mark conflicting products as non-purchasable. Add this to your functions.php as well:

// Customize Add to Cart text and disable purchasability for conflicting categories
add_filter('woocommerce_product_add_to_cart_text', 'disable_conflicting_category_add_to_cart', 10, 2);
add_filter('woocommerce_product_single_add_to_cart_text', 'disable_conflicting_category_add_to_cart', 10, 2);
add_filter('woocommerce_is_purchasable', 'disable_conflicting_category_purchasable', 10, 2);

function disable_conflicting_category_add_to_cart($button_text, $product) {
    $selected_category = WC()->session->get('selected_subscription_category');
    // If no category is selected, return default button text
    if (!$selected_category) return $button_text;

    // Get slugs of categories assigned to the current product
    $product_category_slugs = wp_get_post_terms(
        $product->get_id(), 
        'product_cat', 
        array('fields' => 'slugs')
    );

    // Define which categories conflict with each other
    $conflict_map = array(
        'juices' => 'cleans',
        'cleans' => 'juices'
    );

    // Check if the product belongs to the conflicting category
    if (isset($conflict_map[$selected_category]) && in_array($conflict_map[$selected_category], $product_category_slugs)) {
        return __('Category Selected - Add to Cart Disabled', 'woocommerce');
    }

    return $button_text;
}

function disable_conflicting_category_purchasable($is_purchasable, $product) {
    $selected_category = WC()->session->get('selected_subscription_category');
    if (!$selected_category) return $is_purchasable;

    $product_category_slugs = wp_get_post_terms(
        $product->get_id(), 
        'product_cat', 
        array('fields' => 'slugs')
    );

    $conflict_map = array(
        'juices' => 'cleans',
        'cleans' => 'juices'
    );

    if (isset($conflict_map[$selected_category]) && in_array($conflict_map[$selected_category], $product_category_slugs)) {
        return false;
    }

    return $is_purchasable;
}

Step 3: Update Your Subscription Selection Form #

Make sure your user selection form submits the chosen category to trigger the session save. Here’s an example form you can use (adjust the action URL to match your shop/category page):

<form method="post" action="<?php echo esc_url(get_permalink(get_option('woocommerce_shop_page_id'))); ?>">
    <div class="subscription-selection">
        <label for="selected_category">Choose Your Subscription Category:</label>
        <select id="selected_category" name="selected_category" required>
            <option value="juices">Juices</option>
            <option value="cleans">Cleans</option>
        </select>

        <!-- Add your subscription days and other fields here -->
        <label for="subscription_days">Subscription Duration (Days):</label>
        <input type="number" id="subscription_days" name="subscription_days" min="7" max="30" required>

        <button type="submit" class="button">Proceed to Shop</button>
    </div>
</form>

Step 4: Clear Session When Cart is Emptied #

To reset the selected category when the user clears their cart, add this code to functions.php:

// Clear selected category session when cart is emptied
add_action('woocommerce_cart_emptied', 'clear_selected_category_session');
function clear_selected_category_session() {
    WC()->session->__unset('selected_subscription_category');
}

Important Notes: #

• Replace 'juices' and 'cleans' with your actual product category slugs (check WooCommerce > Products > Categories to find them).
• Test this flow thoroughly: submit the selection form, navigate to both category pages, and confirm only the selected category’s products have active "Add to Cart" buttons.
• If you’re using a page builder, adjust the form code to fit your builder’s structure.

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