WooCommerce get product ID [duplicate] - php

Question

I'm currently working on a WooCommerce theme and attempting to add a sidebar to the product detail page.
I've been able to get the sidebar added (specifically, this one: http://woocommerce.wp-a2z.org/oik_file/templatescontent-widget-product-php/)
Now, I'm trying to figure out how to add a class of "active" to the currently selected product and can't seem to figure it out?
In other words, how do I do something along the lines of if the current product id is equal to the product id in the sidebar add class="active" to the li?
I've made numerous searches and haven't been able to come up with anything useful, so I'm turning here.
Any help greatly appreciated!!

Answer 1

2017 Update - since WooCommerce 3:
global $product;
$id = $product->get_id();
Woocommerce doesn't like you accessing those variables directly. This will get rid of any warnings from woocommerce if your wp_debug is true.

Answer 2

If the query hasn't been modified by a plugin for some reason, you should be able to get a single product page's "id" via
global $post;
$id = $post->ID
OR
global $product;
$id = $product->id;
EDIT: As of WooCommerce 3.0 this needs to be
global $product;
$id = $product->get_id();

Answer 3

Since WooCommerce 2.2 you are able to simply use the wc_get_product Method. As an argument you can pass the ID or simply leave it empty if you're already in the loop.
wc_get_product()->get_id();
OR with 2 lines
$product = wc_get_product();
$id = $product->get_id();

Answer 4

Retrieve the ID of the current item in the WordPress Loop.
echo get_the_ID();
hence works for the product id too. #tested #woo-commerce

Answer 5

The correct method is:
global $product;
$id = $product->get_id();

Answer 6

Save the current product id before entering your loop:
$current_product = $product->id;
Then in your loop for your sidebar, use $product->id again to compare:
<li><a <? if ($product->id == $current_product) { echo "class='on'"; }?> href="<?=get_permalink();?>"><?=the_title();?></a></li>

Answer 7

your can query woocommerce programatically
you can even add a product to your shopping cart.
I'm sure you can figure out how to interact with woocommerce cart once you read the code.
how to interact with woocommerce cart programatically
====================================
<?php
add_action('wp_loaded', 'add_product_to_cart');
function add_product_to_cart()
{
global $wpdb;
if (!is_admin()) {
$product_id = wc_get_product_id_by_sku('L3-670115');
$found = false;
if (is_user_logged_in()) {
if (sizeof(WC()->cart->get_cart()) > 0) {
foreach (WC()->cart->get_cart() as $cart_item_key => $values) {
$_product = $values['data'];
if ($_product->get_id() == $product_id)
WC()->cart->remove_cart_item($cart_item_key);
}
}
} else {
if (sizeof(WC()->cart->get_cart()) > 0) {
foreach (WC()->cart->get_cart() as $cart_item_key => $values) {
$_product = $values['data'];
if ($_product->id == $product_id)
$found = true;
}
// if product not found, add it
if (!$found)
WC()->cart->add_to_cart($product_id);
} else {
// if no products in cart, add it
WC()->cart->add_to_cart($product_id);
}
}
}
}