Add support for custom single product page fields

modules/ppcp-button/resources/js/modules/ActionHandler/SingleProductActionHandler.js

@@ -73,7 +73,7 @@ class SingleProductActionHandler {
     getSubscriptionProducts()
     {
         const id = document.querySelector('[name="add-to-cart"]').value;
-        return [new Product(id, 1, null)];
+        return [new Product(id, 1, null, this.extraFields())];
     }
 
     configuration()
@@ -107,7 +107,7 @@ class SingleProductActionHandler {
     {
         if ( this.isBookingProduct() ) {
             const id = document.querySelector('[name="add-to-cart"]').value;
-            return [new BookingProduct(id, 1, FormHelper.getPrefixedFields(this.formElement, "wc_bookings_field"))];
+            return [new BookingProduct(id, 1, FormHelper.getPrefixedFields(this.formElement, "wc_bookings_field"), this.extraFields())];
         } else if ( this.isGroupedProduct() ) {
             const products = [];
             this.formElement.querySelectorAll('input[type="number"]').forEach((element) => {
@@ -120,17 +120,25 @@ class SingleProductActionHandler {
                 }
                 const id = parseInt(elementName[1]);
                 const quantity = parseInt(element.value);
-                products.push(new Product(id, quantity, null));
+                products.push(new Product(id, quantity, null, this.extraFields()));
             })
             return products;
         } else {
             const id = document.querySelector('[name="add-to-cart"]').value;
             const qty = document.querySelector('[name="quantity"]').value;
             const variations = this.variations();
-            return [new Product(id, qty, variations)];
+            return [new Product(id, qty, variations, this.extraFields())];
         }
     }
 
+    extraFields() {
+        return FormHelper.getFilteredFields(
+            this.formElement,
+            ['add-to-cart', 'quantity', 'product_id', 'variation_id'],
+            ['attribute_', 'wc_bookings_field']
+        );
+    }
+
     createOrder()
     {
         this.cartHelper = null;

modules/ppcp-button/resources/js/modules/Entity/BookingProduct.js

@@ -2,15 +2,17 @@ import Product from "./Product";
 
 class BookingProduct extends Product {
 
-    constructor(id, quantity, booking) {
+    constructor(id, quantity, booking, extra) {
         super(id, quantity, null);
         this.booking = booking;
+        this.extra = extra;
     }
 
     data() {
         return {
             ...super.data(),
-            booking: this.booking
+            booking: this.booking,
+            extra: this.extra
         }
     }
 }

modules/ppcp-button/resources/js/modules/Entity/Product.js

@@ -1,16 +1,17 @@
 class Product {
 
-    constructor(id, quantity, variations) {
+    constructor(id, quantity, variations, extra) {
         this.id = id;
         this.quantity = quantity;
         this.variations = variations;
+        this.extra = extra;
     }
-
     data() {
         return {
             id:this.id,
             quantity: this.quantity,
-            variations:this.variations
+            variations: this.variations,
+            extra: this.extra,
         }
     }
 }

modules/ppcp-button/resources/js/modules/Helper/FormHelper.js

@@ -7,11 +7,29 @@ export default class FormHelper {
     static getPrefixedFields(formElement, prefix) {
         let fields = {};
         for(const element of formElement.elements) {
-            if( element.name.startsWith(prefix) ) {
+            if( ( ! prefix ) || element.name.startsWith(prefix) ) {
                 fields[element.name] = element.value;
             }
         }
         return fields;
     }
 
+    static getFilteredFields(formElement, exactFilters, prefixFilters) {
+        let fields = {};
+
+        for(const element of formElement.elements) {
+            if (!element.name) {
+                continue;
+            }
+            if (exactFilters && (exactFilters.indexOf(element.name) !== -1)) {
+                continue;
+            }
+            if (prefixFilters && prefixFilters.some(prefixFilter => element.name.startsWith(prefixFilter))) {
+                continue;
+            }
+            fields[element.name] = element.value;
+        }
+        return fields;
+    }
+
 }

modules/ppcp-button/src/Endpoint/AbstractCartEndpoint.php

@@ -112,6 +112,14 @@ abstract class AbstractCartEndpoint implements EndpointInterface {
 
 		$success = true;
 		foreach ( $products as $product ) {
+
+			// Add extras to POST, they are usually added by custom plugins.
+			if ( $product['extra'] && is_array( $product['extra'] ) ) {
+				foreach ( $product['extra'] as $key => $value ) {
+					$_POST[ $key ] = $value;
+				}
+			}
+
 			if ( $product['product']->is_type( 'booking' ) ) {
 				$success = $success && $this->add_booking_product(
 					$product['product'],
@@ -229,6 +237,7 @@ abstract class AbstractCartEndpoint implements EndpointInterface {
 				'quantity'   => (int) $product['quantity'],
 				'variations' => $product['variations'] ?? null,
 				'booking'    => $product['booking'] ?? null,
+				'extra'      => $product['extra'] ?? null,
 			);
 		}
 		return $products;