[英]Allow checkout only when a product of a mandatory category is in cart
I'd like to stop any customer advancing to the checkout if they do not have a particular product category in their basket.如果他们的购物篮中没有特定的产品类别,我想阻止任何客户前进到结账处。 I would also like to tell them with an error message that they need to add a certain product.我还想通过错误消息告诉他们他们需要添加某个产品。 I've found some code but cannot it to work.我找到了一些代码,但无法正常工作。 I've added it as a code snippet into my Wordpress install but alas it does not function and there are no error messages even though I have debugging switched on.我已将它作为代码片段添加到我的 Wordpress 安装中,但可惜它不起作用,即使我打开了调试,也没有错误消息。 Here is the code that I have found in Github that may need modification in order for this to work:这是我在 Github 中找到的可能需要修改才能使其工作的代码:
function sv_wc_prevent_checkout_for_category() {
// set the slug of the category for which we disallow checkout
$category = 'sibling';
// get the product category
$product_cat = get_term_by( 'slug', $category, 'product_cat' );
// sanity check to prevent fatals if the term doesn't exist
if ( is_wp_error( $product_cat ) ) {
return;
}
$category_name = '<a href="' . get_term_link( $category, 'product_cat' ) . '">' . $product_cat->name . '</a>';
// check if this category is the only thing in the cart
if ( sv_wc_is_category_alone_in_cart( $category ) ) {
// render a notice to explain why checkout is blocked
wc_add_notice( sprintf( 'Hi there! Looks like your cart only contains products from the %1$s category – you must purchase a product from another category to check out.', $category_name ), 'error' );
}
}
add_action( 'woocommerce_check_cart_items', 'sv_wc_prevent_checkout_for_category' );
/**
* Checks if a cart contains exclusively products in a given category
*
* @param string $category the slug of the product category
* @return bool - true if the cart only contains the given category
*/
function sv_wc_is_category_alone_in_cart( $category ) {
// check each cart item for our category
foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
// if a product is not in our category, bail out since we know the category is not alone
if ( ! has_term( $category, 'product_cat', $cart_item['data']->id ) ) {
return false;
}
}
// if we're here, all items in the cart are in our category
return true;
}
So I'm looking to stop checkout (with error message) if the 'sibling' category is the only item in the cart.因此,如果“兄弟姐妹”类别是购物车中唯一的项目,我希望停止结帐(带有错误消息)。 I have a 'standard' category which must be in the basket before the customer makes it to the checkout.我有一个“标准”类别,必须在客户结账之前放在购物篮中。 Hope this makes sense.希望这是有道理的。
Here you have a solution that will make the trick.在这里,您有一个可以解决问题的解决方案。 There is especially 2 main functions (the last ones) :特别是有两个主要功能(最后一个) :
Define before your mandatory category slug in
your_mandatory_category_slug()
function.在your_mandatory_category_slug()
函数中的强制类别 slug 之前定义。
This is the code:这是代码:
// Function that define the mandatory product category
function your_mandatory_category_slug(){
// DEFINE HERE the SLUG of the needed product category
$category = 'clothing';
return $category;
}
// Conditional function that returns true if the mandatory product category is in cart
function has_mandatory_category(){
$category_needed = your_mandatory_category_slug();
$has_cat = false;
// Iterrating each item in cart and detecting…
foreach ( WC()->cart->get_cart() as $item ) {
// Detects if the needed product category is in cart items
if ( has_term($category_needed, 'product_cat', $item['product_id'] ) ) {
$has_cat = true;
break;
}
}
return $has_cat;
}
// Function that display a message if there is not in cart a mandatory product category
function mandatory_category_display_message() {
$category_needed = your_mandatory_category_slug();
// check that cart is not empty (for cart and product category archives)
if( !WC()->cart->is_empty() && ( is_cart() || is_product_category( $category_needed ) ) ){
$category_obj = get_term_by( 'slug', $category_needed, 'product_cat' );
if ( is_wp_error( $category_obj ) ) return;
// Display message when product category is not in cart items
if ( !has_mandatory_category() ) {
$category_name = $category_obj->name;
$category_url = get_term_link( $category_needed, 'product_cat' );
// render a notice to explain why checkout is blocked
wc_add_notice( sprintf( __( '<strong>Reminder:</strong> You have to add in your cart, a product from "%1$s" category, to be allowed to check out. Please return <a href="%2$s"> here to "%1$s" product page</a>', 'your_theme_domain'), $category_name, $category_url ), 'error' );
}
}
}
add_action( 'woocommerce_before_main_content', 'mandatory_category_display_message', 30 ); // for product mandatory category archives pages
add_action( 'woocommerce_check_cart_items', 'mandatory_category_display_message' ); // for cat page
// Function that redirect from checkout to mandatory product category archives pages
function mandatory_category_checkout_redirect() {
// If cart is not empty on checkout page
if( !WC()->cart->is_empty() && is_checkout() ){
$category_needed = your_mandatory_category_slug();
// If missing product category => redirect to the products category page
if ( !has_mandatory_category() )
wp_redirect( get_term_link( $category_needed, 'product_cat' ) );
}
}
add_action('template_redirect', 'mandatory_category_checkout_redirect');
This goes in function.php file of your active child theme (or theme) or also in any plugin file.这在您的活动子主题(或主题)或任何插件文件的 function.php 文件中。
This code is tested and fully functional.此代码经过测试且功能齐全。
Works like a charm for my Wordpress installation with Woocommerce v2.6.12.使用 Woocommerce v2.6.12 对我的 Wordpress 安装很有用。
I would like to add two mandatory product-categories, maybe 3 or 4 in the future.我想添加两个强制性产品类别,将来可能会添加 3 或 4 个。 I tried changing:我尝试改变:
$category = 'slug1';
to到
$category = 'slug1', 'slug2';
and和
$category = array('slug1','slug2');
Without success.没有成功。 Is there a way to make this code work with multiple slugs?有没有办法使此代码与多个 slug 一起使用?
如果我想重定向到产品网址而不是类别,您将如何做不同的事情?
I have adapted LoicTheAztec's answer to work with 2 categories.我已经改编了 LoicTheAztec 的答案以处理 2 个类别。 It seems to be working.它似乎正在工作。 I did not adapt the text has_mandatory_categorytext
function, .我没有改编文字has_mandatory_categorytext
函数,. If you can follow the code you can diy, but I was focusing on just functionality.如果您可以按照代码进行操作,则可以自己动手做,但我只关注功能。 There is another answer here but I preferred this answer and the other was not working for me.这里有另一个答案,但我更喜欢这个答案,而另一个对我不起作用。
// Function that define the 2 mandatory product categories cat1 & cat2
function your_mandatory_category_slug(){ $category = 'cat1'; return $category; }
function your_mandatory_category_slug2(){ $category = 'cat2'; return $category; }
// Conditional function that returns true if the mandatory product category is in cart
function has_mandatory_category1(){
$category_needed = your_mandatory_category_slug();
$has_cat = false;
foreach ( WC()->cart->get_cart() as $item ) {
if ( has_term($category_needed, 'product_cat', $item['product_id'] ) ) {
$has_cat = true;
break;
}
}
return $has_cat;
}
// Conditional function that returns true if the mandatory product category is in cart
function has_mandatory_category2(){
$category_needed = your_mandatory_category_slug2();
$has_cat = false;
foreach ( WC()->cart->get_cart() as $item ) {
if ( has_term($category_needed, 'product_cat', $item['product_id'] ) ) {
$has_cat = true;
break;
}
}
return $has_cat;
}
// Function that redirect from checkout to mandatory product category archives pages
function mandatory_category_checkout_redirect() {
// If cart is not empty on checkout page
if( !WC()->cart->is_empty() && is_checkout() ){
$category_needed = your_mandatory_category_slug();
$category_needed2 = your_mandatory_category_slug2();
if ( !has_mandatory_category1() )
wp_redirect( get_term_link( $category_needed, 'product_cat' ) );
if ( !has_mandatory_category2() )
wp_redirect( get_term_link( $category_needed2, 'product_cat' ) );
}
}
add_action('template_redirect', 'mandatory_category_checkout_redirect');
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