Trying to change cart pricing
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Hi. I want to change cart item pricing but (I’m guessing this is due to AJAX handling?) I cannot seem to be able to use the action “woocommerce_before_calculate_totals” to iterate through the cart items to find the product whose price I’d like to adjust, and then set_price() on the line item with the new price.
I have constants defined with the special sale price (‘FITSALEPRICE’) and product id (‘FITPID’). Here’s what I’m trying to do, but this does not seem to work with the sidecart:
add_action( 'woocommerce_before_calculate_totals', 'pricecartvariations', 99 ); function pricecartvariations( $cart ) { if (defined('FITSALEPRICE') && defined('FITPID')) { foreach ($cart->get_cart() as $key=>$value) { if ( $value['product_id'] == FITPID ) { $value['data']->set_price(FITSALEPRICE); } } } }It seems like this action never gets called, so when WC Side Cart writes $product_price with WC->cart->get_product_price() only the original price shows in the cart – not the special sale price defined by FITSALEPRICE.
Any help would be GREATLY appreciated. This is driving me mad.
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Hello,
The hook
woocommerce_before_calculate_totalsworks fine with side cart. I have tested the below code.define('MYCONSTANT', 20); add_action( 'woocommerce_before_calculate_totals', 'pricecartvariations', 99 ); function pricecartvariations( $cart ) { foreach ($cart->get_cart() as $key=>$value) { $value['data']->set_price(MYCONSTANT); } }Constants are different from $GLOBALS, if you have used function
define()then you cannot use $GLOBALS to fetch it.
Now if you are still not able to get the constant value inside filter that means your constant is declared too late, after the filter is called.
Ajax is no different than the normal request.Also to make sure some other filter is not overriding yours, use priority
PHP_INT_MAXinstead of 99DUH, wait, I’m reading this wrong. #0 is actually the last place in the queue. So I need to find a way to define these constants sooner. However, I do not understand why they are not being set when I run the code from within the action function itself!
Regardless, I don’t see any specific call to action
woocommerce_before_calculate_totalsbut maybe that’s in an do_action array?Another thing that makes it nearly impossible for me to figure out what is going on is whenever there is an “echo” or print of any sort in the action function, the add-to-cart spins and spins in an endless loop and not only does the side cart not open but I get no output from my echo or print_r etc.
OK, I’m at the end of my rope here. It seems like
woocommerce_before_calculate_totals— which seems like the most reasonable place to do this repricing — is running before I can set constants or globals to the values I need them to contain.Since I can’t use echo or print_r directly within the action function without crashing the page, I’m piping the output of my trace to a text file. So here’s what is happening (in reverse order) from the action function:
#0 wp-includes/class-wp-hook.php(292): pricecartvariations(Object(WC_Cart)) #1 wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array) #2 wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 wp-content/plugins/woocommerce/includes/class-wc-cart.php(1367): do_action('woocommerce_bef...', Object(WC_Cart)) #4 wp-content/plugins/side-cart-woocommerce/public/class-xoo-wsc-cart-data.php(71): WC_Cart->calculate_totals() #5 wp-includes/class-wp-hook.php(292): xoo_wsc_Cart_Data->set_ajax_fragments(Array) #6 wp-includes/plugin.php(212): WP_Hook->apply_filters(Array, Array) #7 wp-content/plugins/woocommerce/includes/class-wc-ajax.php(195): apply_filters('woocommerce_add...', Array) #8 wp-includes/class-wp-hook.php(292): WC_AJAX::get_refreshed_fragments('') #9 wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters('', Array) #10 wp-includes/plugin.php(484): WP_Hook->do_action(Array) #11 wp-content/plugins/woocommerce/includes/class-wc-ajax.php(90): do_action('wc_ajax_get_ref...') #12 wp-includes/class-wp-hook.php(292): WC_AJAX::do_wc_ajax('') #13 wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(false, Array) #14 wp-includes/plugin.php(484): WP_Hook->do_action(Array) #15 wp-includes/template-loader.php(13): do_action('template_redire...') #16 wp-blog-header.php(19): require_once('/chroot/home/ad...') #17 index.php(17): require('/chroot/home/ad...') #18 {main}I need to (1) check if this is a product page, (2) get the product id, then (3) lookup the pricing for the specific model the user is looking for (and apply that special pricing to the item added to the cart). It’s in this function
quickfit()that I’m setting these constants I want to pull into thewoocommerce_before_calculate_totalsaction… but when that gets called, they haven’t been defined yet (even though the priority is as high as it can possibly get!!!!).I’ve then tried to do this in an action like
template_redirect(which is #15 in the list above, i.e. well before thewoocommerce_before_calculate_totalsaction) but I get a fatal error asglobal $product; $product->get_id();isn’t recognized (yet).Then I tried doing this in a filter like
woocommerce_add_to_cart_fragments(#7 on the list above — also well before thewoocommerce_before_calculate_totalsaction). I simply returned the $fragments parameter but before that inserted my logic to (1) check ifis_product()and if so (2) get the product id and (3) lookup the pricing and set the constants etc. It never gets past theis_product()check, so it looks like this is happening before woocommerce even knows this is a product.The info I need for my lookup is stored in the url. When I look at
$_SERVER['REQUEST_URI']I do not see my own data… I only see the AJAX endpoint for the side cart.SO… where/how exactly can I pass the values that I need to change the pricing in the cart??? I’m really thinking this plugin is just not something a developer can work with as there don’t appear to be any hooks where I can modify the cart items.
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