[WORDPRESS] 고객이 제품 가격을 설정하고 WooCommerce에서 특정 유효성 검사가있는 장바구니에 추가 할 수있게하십시오.

고객이 제품 가격을 설정하고 WooCommerce에서 특정 유효성 검사가있는 장바구니에 추가 할 수있게하십시오.

해결법

1. ---

   1.

   function giftcard_price_field() {
       global $product;
       
       // Instanceof
       if ( $product instanceof WC_Product ) {
           
           // Set category(ies)
           $cats = array ( 'giftcard' );
   
           // True
           if ( has_term( $cats, 'product_cat', $product->get_id() ) ) {
               // add a new input field for the price, allowing the customer to set the price
               echo '<div class="giftcard-product-price">
               <label for="giftcard-product-price">Giftcard value: </label>
               <input type="text" id="giftcard_product_price" name="giftcard_product_price" placeholder="Giftcard value" maxlength="1000">
               </div>';
           }
       }
   }
   add_action( 'woocommerce_before_add_to_cart_button', 'giftcard_price_field', 10, 0 );
   
   // Remove price
   function action_woocommerce_single_product_summary() {
       global $product;
       
       // Instanceof
       if ( $product instanceof WC_Product ) {
           
           // Set category(ies)
           $cats = array ( 'giftcard' );
   
           // True
           if ( has_term( $cats, 'product_cat', $product->get_id() ) ) {   
               remove_action('woocommerce_single_product_summary','woocommerce_template_single_price', 10 );
           }
       }
   }
   add_action( 'woocommerce_single_product_summary', 'action_woocommerce_single_product_summary', 5 );
   
   // Validate
   function filter_woocommerce_add_to_cart_validation( $passed, $product_id, $quantity, $variation_id = null, $variations = null ) {
       // Isset
       if ( isset ( $_POST['giftcard_product_price'] ) ) {
           $giftcard_product_price = $_POST['giftcard_product_price'];
   
           // Error = empty, not numeric or less than 100
           if ( empty ( $giftcard_product_price ) ) {
               wc_add_notice( __( 'Field is empty', 'woocommerce' ), 'error' );
               $passed = false;
           } elseif ( ! is_numeric ( $giftcard_product_price ) ) {
               wc_add_notice( __( 'NOT a number or a numeric string', 'woocommerce' ), 'error' );
               $passed = false;                
           } elseif ( $giftcard_product_price < 100 ) {
               wc_add_notice( __( 'Less than 100', 'woocommerce' ), 'error' );
               $passed = false;                
           }   
       }
       
       return $passed;
   }
   add_filter( 'woocommerce_add_to_cart_validation', 'filter_woocommerce_add_to_cart_validation', 10, 5 );
   
   function filter_add_cart_item_data( $cart_item_data, $product_id, $variation_id ) {
       if ( isset ( $_POST['giftcard_product_price'] ) ) {
           $cart_item_data['giftcard_product_price'] = sanitize_text_field( $_POST['giftcard_product_price'] );
       }
       
       return $cart_item_data; 
   }
   add_filter( 'woocommerce_add_cart_item_data', 'filter_add_cart_item_data', 10, 3 );
   
   // Set price
   function action_woocommerce_before_calculate_totals( $cart ) {
       if ( is_admin() && ! defined( 'DOING_AJAX' ) )
           return;
   
       if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
           return;
   
       // Loop through cart items
       foreach ( $cart->get_cart() as $cart_item ) {
           if ( isset ( $cart_item['giftcard_product_price'] ) ) {
               $cart_item['data']->set_price( $cart_item['giftcard_product_price'] );
           }
       }
   }
   add_action( 'woocommerce_before_calculate_totals', 'action_woocommerce_before_calculate_totals', 10, 1 );
   

from https://stackoverflow.com/questions/63544045/allow-customer-to-set-the-product-price-and-add-to-cart-with-certain-validations by cc-by-sa and MIT license