itskawsar · December 31, 2020 14:51 · Dec 20, 2020 · Dec 20, 2020 · Dec 20, 2020 · Dec 13, 2020
diff --git a/custom-fields-for-woocommerce.php b/custom-fields-for-woocommerce.php
@@ -1,8 +1,20 @@
 <?php
+
+/**
+ *
+ * You can find the complete tutorial for this here:
+ * https://pluginrepublic.com/woocommerce-custom-fields
+ *
+ * Alternatively, check out the plugin
+ * https://pluginrepublic.com/wordpress-plugins/woocommerce-product-add-ons-ultimate/
+ *
+ */
+
 // Exit if accessed directly
 if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
+
 /**
  * Display the custom text field
  * @since 1.0.0

diff --git a/custom-fields-for-woocommerce.php b/custom-fields-for-woocommerce.php
@@ -1,10 +1,8 @@
 <?php
-
 // Exit if accessed directly
 if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
-
 /**
  * Display the custom text field
  * @since 1.0.0

diff --git a/custom-fields-for-woocommerce.php b/custom-fields-for-woocommerce.php
@@ -1,7 +1,4 @@
 <?php
-/**
- * https://pluginrepublic.com/wordpress-plugins/woocommerce-product-add-ons-ultimate/ 
- */
 
 // Exit if accessed directly
 if ( ! defined( 'ABSPATH' ) ) {

diff --git a/custom-fields-for-woocommerce.php b/custom-fields-for-woocommerce.php
@@ -1,14 +1,7 @@
 <?php
 /**
- * Plugin Name: Custom Fields for WooCommerce
- * Description: Add custom fields to WooCommerce products
- * Version: 1.0.0
- * Author: Gareth Harris
- * Author URI: https://pluginrepublic.com/
- * Text Domain: cfwc
- * WC requires at least: 3.4.0
- * WC tested up to: 3.4.2
-*/
+ * https://pluginrepublic.com/wordpress-plugins/woocommerce-product-add-ons-ultimate/ 
+ */
 
 // Exit if accessed directly
 if ( ! defined( 'ABSPATH' ) ) {

diff --git a/custom-fields-for-woocommerce.php b/custom-fields-for-woocommerce.php
@@ -4,7 +4,7 @@
  * Description: Add custom fields to WooCommerce products
  * Version: 1.0.0
  * Author: Gareth Harris
- * Author URI: https://catapultthemes.com/
+ * Author URI: https://pluginrepublic.com/
  * Text Domain: cfwc
  * WC requires at least: 3.4.0
  * WC tested up to: 3.4.2

diff --git a/custom-fields-for-woocommerce.php b/custom-fields-for-woocommerce.php
@@ -0,0 +1,145 @@
+<?php
+/**
+ * Plugin Name: Custom Fields for WooCommerce
+ * Description: Add custom fields to WooCommerce products
+ * Version: 1.0.0
+ * Author: Gareth Harris
+ * Author URI: https://catapultthemes.com/
+ * Text Domain: cfwc
+ * WC requires at least: 3.4.0
+ * WC tested up to: 3.4.2
+*/
+
+// Exit if accessed directly
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
+
+/**
+ * Display the custom text field
+ * @since 1.0.0
+ */
+function cfwc_create_custom_field() {
+	$args = array(
+		'id'            => 'custom_text_field_title',
+		'label'         => __( 'Custom Text Field Title', 'cfwc' ),
+		'class'					=> 'cfwc-custom-field',
+		'desc_tip'      => true,
+		'description'   => __( 'Enter the title of your custom text field.', 'ctwc' ),
+	);
+	woocommerce_wp_text_input( $args );
+}
+add_action( 'woocommerce_product_options_general_product_data', 'cfwc_create_custom_field' );
+
+/**
+ * Save the custom field
+ * @since 1.0.0
+ */
+function cfwc_save_custom_field( $post_id ) {
+	$product = wc_get_product( $post_id );
+	$title = isset( $_POST['custom_text_field_title'] ) ? $_POST['custom_text_field_title'] : '';
+	$product->update_meta_data( 'custom_text_field_title', sanitize_text_field( $title ) );
+	$product->save();
+}
+add_action( 'woocommerce_process_product_meta', 'cfwc_save_custom_field' );
+
+/**
+ * Display custom field on the front end
+ * @since 1.0.0
+ */
+function cfwc_display_custom_field() {
+	global $post;
+	// Check for the custom field value
+	$product = wc_get_product( $post->ID );
+	$title = $product->get_meta( 'custom_text_field_title' );
+	if( $title ) {
+		// Only display our field if we've got a value for the field title
+		printf(
+			'<div class="cfwc-custom-field-wrapper"><label for="cfwc-title-field">%s</label><input type="text" id="cfwc-title-field" name="cfwc-title-field" value=""></div>',
+			esc_html( $title )
+		);
+	}
+}
+add_action( 'woocommerce_before_add_to_cart_button', 'cfwc_display_custom_field' );
+
+/**
+ * Validate the text field
+ * @since 1.0.0
+ * @param Array 		$passed					Validation status.
+ * @param Integer   $product_id     Product ID.
+ * @param Boolean  	$quantity   		Quantity
+ */
+function cfwc_validate_custom_field( $passed, $product_id, $quantity ) {
+	if( empty( $_POST['cfwc-title-field'] ) ) {
+		// Fails validation
+		$passed = false;
+		wc_add_notice( __( 'Please enter a value into the text field', 'cfwc' ), 'error' );
+	}
+	return $passed;
+}
+add_filter( 'woocommerce_add_to_cart_validation', 'cfwc_validate_custom_field', 10, 3 );
+
+/**
+ * Add the text field as item data to the cart object
+ * @since 1.0.0
+ * @param Array 		$cart_item_data Cart item meta data.
+ * @param Integer   $product_id     Product ID.
+ * @param Integer   $variation_id   Variation ID.
+ * @param Boolean  	$quantity   		Quantity
+ */
+function cfwc_add_custom_field_item_data( $cart_item_data, $product_id, $variation_id, $quantity ) {
+	if( ! empty( $_POST['cfwc-title-field'] ) ) {
+		// Add the item data
+		$cart_item_data['title_field'] = $_POST['cfwc-title-field'];
+		$product = wc_get_product( $product_id ); // Expanded function
+		$price = $product->get_price(); // Expanded function
+		$cart_item_data['total_price'] = $price + 100; // Expanded function
+	}
+	return $cart_item_data;
+}
+add_filter( 'woocommerce_add_cart_item_data', 'cfwc_add_custom_field_item_data', 10, 4 );
+
+/**
+ * Update the price in the cart
+ * @since 1.0.0
+ */
+function cfwc_before_calculate_totals( $cart_obj ) {
+  if ( is_admin() && ! defined( 'DOING_AJAX' ) ) {
+    return;
+  }
+  // Iterate through each cart item
+  foreach( $cart_obj->get_cart() as $key=>$value ) {
+    if( isset( $value['total_price'] ) ) {
+      $price = $value['total_price'];
+      $value['data']->set_price( ( $price ) );
+    }
+  }
+}
+add_action( 'woocommerce_before_calculate_totals', 'cfwc_before_calculate_totals', 10, 1 );
+
+/**
+ * Display the custom field value in the cart
+ * @since 1.0.0
+ */
+function cfwc_cart_item_name( $name, $cart_item, $cart_item_key ) {
+	if( isset( $cart_item['title_field'] ) ) {
+	  $name .= sprintf(
+			'<p>%s</p>',
+			esc_html( $cart_item['title_field'] )
+		);
+	}
+	return $name;
+}
+add_filter( 'woocommerce_cart_item_name', 'cfwc_cart_item_name', 10, 3 );
+
+/**
+ * Add custom field to order object
+ */
+function cfwc_add_custom_data_to_order( $item, $cart_item_key, $values, $order ) {
+	foreach( $item as $cart_item_key=>$values ) {
+		if( isset( $values['title_field'] ) ) {
+			$item->add_meta_data( __( 'Custom Field', 'cfwc' ), $values['title_field'], true );
+		}
+	}
+}
+add_action( 'woocommerce_checkout_create_order_line_item', 'cfwc_add_custom_data_to_order', 10, 4 );
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