cpt-turns-into-product

Using this You can use any custom post type as Product and make payment with WooCommerce.

You must install and active WooCommerce plugin v3 and above. let me know it works or not. Happy conding.

<?php

add_action( 'wp_loaded', 'my_plugin_load_after_woocommerce' );

function my_plugin_load_after_woocommerce() {
 if ( class_exists( 'WC_Product' ) ) {
  class TFSB_Woo_Product extends WC_Product {

   protected $post_type = 'tf-service-booking';

   public function get_type() {
    return 'tf-service-booking';
   }

   public function __construct( $product = 0 ) {
    $this->supports[] = 'ajax_add_to_cart';

    parent::__construct( $product );

   }

  }
 }

 if ( class_exists( 'WC_Product_Data_Store_CPT' ) ) {
  class TFSB_Data_Store_CPT extends WC_Product_Data_Store_CPT {

   public function read( &$product ) {
    $product->set_defaults();
    $post_object = get_post( $product->get_id() );

    if ( !$product->get_id() || !$post_object || 'tf-service-booking' !== $post_object->post_type ) {

     throw new Exception( __( 'Invalid product.', 'woocommerce' ) );
    }

    $product->set_props(
     array(
      'name'              => $post_object->post_title,
      'slug'              => $post_object->post_name,
      'date_created'      => 0 < $post_object->post_date_gmt ? wc_string_to_timestamp( $post_object->post_date_gmt ) : null,
      'date_modified'     => 0 < $post_object->post_modified_gmt ? wc_string_to_timestamp( $post_object->post_modified_gmt ) : null,
      'status'            => $post_object->post_status,
      'description'       => $post_object->post_content,
      'short_description' => $post_object->post_excerpt,
      'parent_id'         => $post_object->post_parent,
      'menu_order'        => $post_object->menu_order,
      'reviews_allowed'   => 'open' === $post_object->comment_status,
     )
    );

    $this->read_attributes( $product );
    $this->read_downloads( $product );
    $this->read_visibility( $product );
    $this->read_product_data( $product );
    $this->read_extra_data( $product );
    $product->set_object_read( true );
   }

  }
 }

 if ( class_exists( 'WC_Order_Item_Product' ) ) {

  class TFSB_WC_Order_Item_Product extends WC_Order_Item_Product {
   public function set_product_id( $value ) {
    if ( $value > 0 && 'tf-service-booking' !== get_post_type( absint( $value ) ) ) {
     $this->error( 'order_item_product_invalid_product_id', __( 'Invalid product ID', 'woocommerce' ) );
    }
    $this->set_prop( 'product_id', absint( $value ) );
   }

  }
 }
}

function tfsb_woocommerce_data_stores( $stores ) {
 $stores['product-tf-service-booking'] = 'TFSB_Data_Store_CPT';
 return $stores;
}

add_filter( 'woocommerce_data_stores', 'tfsb_woocommerce_data_stores', 11, 1 );

function TFSB_Woo_product_class( $class_name, $product_type, $product_id ) {
 if ( $product_type == 'tf-service-booking' ) {
  $class_name = 'TFSB_Woo_Product';
 }

 return $class_name;
}

add_filter( 'woocommerce_product_class', 'TFSB_Woo_product_class', 25, 3 );

function my_woocommerce_product_get_price( $price, $post ) {
    if ($post->post_type === 'post'){
		$price = get_post_meta($post->id, "price", true);
    }
	return $price;
}

add_filter( 'woocommerce_product_get_price', 'my_woocommerce_product_get_price', 20, 2 );
add_filter( 'woocommerce_product_get_price', 'my_woocommerce_product_get_price', 10, 2 );

function TFSB_Woo_product_type( $false, $product_id ) {
 if ( $false === false ) {
  global $post;
  if ( is_object( $post ) && !empty( $post ) ) {
   if ( $post->post_type == 'tf-service-booking' && $post->ID == $product_id ) {
    return 'tf-service-booking';
   } else {
    $product = get_post( $product_id );
    if ( is_object( $product ) && !is_wp_error( $product ) ) {
     if ( $product->post_type == 'your-cpt' ) {
      return 'your-cpt';
     }

    }
   }

  } else if ( wp_doing_ajax() ) {
   $product_post = get_post( $product_id );
   if ( $product_post->post_type == 'your-cpt' ) {
    return 'your-cpt';
   }

  } else {
   $product = get_post( $product_id );
   if ( is_object( $product ) && !is_wp_error( $product ) ) {
    if ( $product->post_type == 'your-cpt' ) {
     return 'your-cpt';
    }

   }

  } 

 }
 return false;
}

add_filter( 'woocommerce_product_type_query', 'TFSB_Woo_product_type', 12, 2 );

function tfsb_woocommerce_checkout_create_order_line_item_object( $item, $cart_item_key, $values, $order ) {

 $product = $values['data'];
 if ( $product->get_type() == 'your-cpt' ) {
  return new TFSB_WC_Order_Item_Product();
 }
 return $item;
}

add_filter( 'woocommerce_checkout_create_order_line_item_object', 'tfsb_woocommerce_checkout_create_order_line_item_object', 20, 4 );

function cod_woocommerce_checkout_create_order_line_item( $item, $cart_item_key, $values, $order ) {
 if ( $values['data']->get_type() == 'your-cpt' ) {
  $item->update_meta_data( '_your-cpt', 'yes' );
  return;
 }

}

add_action( 'woocommerce_checkout_create_order_line_item', 'cod_woocommerce_checkout_create_order_line_item', 20, 4 );

function tfsb_woocommerce_get_order_item_classname( $classname, $item_type, $id ) {
 global $wpdb;
 $is_IA = $wpdb->get_var( "SELECT meta_value FROM {$wpdb->prefix}woocommerce_order_itemmeta WHERE order_item_id = {$id} AND meta_key = '_your-cpt'" );

 if ( 'yes' === $is_IA ) {
  $classname = 'TFSB_WC_Order_Item_Product';
 }
 return $classname;
}

add_filter( 'woocommerce_get_order_item_classname', 'tfsb_woocommerce_get_order_item_classname', 20, 3 );