Add a quantity radio selector field to Ajax add to cart button on WooCommerce shop page

My product has a maximum quantity of 10. Customers often choose to buy many types at the same time. Hence I want to have a radio quantity selector (1 – 10) at the shop page.

I already know how to show quantity picker at the shop page and how to use WooCommerce radio form. But I don’t know how to make a quantity radio selector.

Based on Add a quantity field to Ajax add to cart button on WooCommerce shop page answer code, this is my code attempt:

add_filter( 'woocommerce_loop_add_to_cart_link', 'quantity_inputs_for_loop_ajax_add_to_cart', 99, 2 );
function quantity_inputs_for_loop_ajax_add_to_cart( $html, $product ) {
    if ( $product && $product->is_type( 'simple' ) && $product->is_purchasable() && $product->is_in_stock() && ! $product->is_sold_individually() ) {
        // Get the necessary classes
        $class = implode( ' ', array_filter( array(
            'button',
            'product_type_' . $product->get_type(),
            $product->is_purchasable() && $product->is_in_stock() ? 'add_to_cart_button' : '',
            $product->supports( 'ajax_add_to_cart' ) ? 'ajax_add_to_cart' : '',
        ) ) );

        $args = array(
            'type' => 'radio',
            'class' => array( 'form-row-wide', 'update_totals_on_change' ),
            'options' => array(
                '0' => '0',
                '1' => '1',
                '2' => '2',
                '3' => '3',
                '4' => '4',
                '5' => '5',
                '6' => '6',
                '7' => '7',
                '8' => '8',
                '9' => '9',
                '10' => '10'
            ),
            'default' => '0'
        );
        // Embedding the quantity field to Ajax add to cart button
        $html = sprintf( '%s<a rel="nofollow" href="%s" data-quantity="%s" data-product_id="%s" data-product_sku="%s" class="%s">%s</a>',
            woocommerce_form_field( 'radio_choice', $args, '0' ),
//             woocommerce_quantity_input( array(), $product, false ),
            esc_url( $product->add_to_cart_url() ),
            esc_attr( isset( $quantity ) ? $quantity : 1 ),
            esc_attr( $product->get_id() ),
            esc_attr( $product->get_sku() ),
            esc_attr( isset( $class ) ? $class : 'button' ),
            esc_html( $product->add_to_cart_text() )
        );
    }
    return $html;
}

Any suggestion to get the code working?

Answer

It looks like your missing the additional jQuery required to make this work. I know you requested to make this work with a radio select but maybe to save space you want to consider a select?

The following code does just that.

add_filter( 'woocommerce_loop_add_to_cart_link', 'quantity_inputs_for_loop_ajax_add_to_cart', 10, 2 );
function quantity_inputs_for_loop_ajax_add_to_cart( $html, $product ) {
    if ( $product && $product->is_type( 'simple' ) && $product->is_purchasable() && $product->is_in_stock() && ! $product->is_sold_individually() ) {
        // Get the necessary classes
        $class = implode( ' ', array_filter( array(
            'button',
            'product_type_' . $product->get_type(),
            $product->is_purchasable() && $product->is_in_stock() ? 'add_to_cart_button' : '',
            $product->supports( 'ajax_add_to_cart' ) ? 'ajax_add_to_cart' : '',
        ) ) );

        $args = array(
            'type' => 'select',
            'class' => array( 'form-row-wide', 'quantity-select' ),
            'options' => array(
                '0' => '0',
                '1' => '1',
                '2' => '2',
                '3' => '3',
                '4' => '4',
                '5' => '5',
                '6' => '6',
                '7' => '7',
                '8' => '8',
                '9' => '9',
                '10' => '10'
            ),
            'default' => '0'
        );

        // Embedding the quantity field to Ajax add to cart button
        $html = sprintf( '%s<a rel="nofollow" href="%s" data-quantity="%s" data-product_id="%s" data-product_sku="%s" class="%s">%s</a>',
            woocommerce_form_field( '', $args ),
            esc_url( $product->add_to_cart_url() ),
            esc_attr( isset( $quantity ) ? $quantity : 1 ),
            esc_attr( $product->get_id() ),
            esc_attr( $product->get_sku() ),
            esc_attr( isset( $class ) ? $class : 'button' ),
            esc_html( $product->add_to_cart_text() )
        );
    }
    return $html;
}

add_action( 'wp_footer', 'archives_quantity_fields_script' );
function archives_quantity_fields_script(){
    ?>
    <script type='text/javascript'>
        jQuery(function($){
            // Update data-quantity
            $(document.body).on('change', '.quantity-select select', function() {
                let selected_quantity = $(this).find(":selected").text();
                $(this).closest('li.product').find('a.ajax_add_to_cart').attr('data-quantity', selected_quantity);
                $(".added_to_cart").remove(); // Optional: Removing other previous "view cart" buttons
            }).on('click', '.add_to_cart_button', function(){
                var button = $(this);
                setTimeout(function(){
                    console.log( button.siblings('.quantity-select').find('select option[value="0"]') );
                    button.siblings('.quantity-select').find('select').val('0'); // reset quantity to 0
                }, 1000); // After 1 second
            });
        });
    </script>
    <?php
}