Hide WooCommerce product if already purchased by logged in user - php

Question

I am creating an LMS using LearnDash + WooCommerce. So far so good. Now, I'd like to hide a Product when the logged-in user has already purchased it to a) prevent the user from purchasing it twice, and b) so that I can display a product grid for them without the already purchased item(s).
Another example: if a user who purchased ITEM A goes to the shop, ITEM A should not even be displayed for them.
Thanks so much!

Answer 1

So, I ended up with a nice workaround:
On the product page, I created a CUSTOM FIELD where I can input the COURSE ID.
Then, with PHP, I check the Product and retrieve the custom field for the COURSE ID.
LearnDash has a shortcode for students... so after retrieving the course ID, I can display a message/button for users who have registered already for this course.
This is the code:
<?php
global $product;
$postid = $product->get_id();
$courseid = get_post_meta( $product->get_id(), 'ID_del_curso', true );
$html = '"]<center><div class="alreadyPurchased"><i class="fas fa-graduation-cap paddingRightM"></i> Ya te has registrado</div></center>';
$openIT = '[student course_id="';
$closeIT = '[/student]';
echo do_shortcode( $openIT . $courseid . $html . $closeIT );
?>
Hope it helps!

Answer 2

There is a simpler solution.
Use this LearnDash shortcode...
[visitor]
Hello visitor.
Put your "Buy now" button here.
[/visitor]

Answer 3

/**
* Disables repeat purchase for products / variations
*
* #param bool $purchasable true if product can be purchased
* #param \WC_Product $product the WooCommerce product
* #return bool $purchasable the updated is_purchasable check
*/
function sv_disable_repeat_purchase( $purchasable, $product ) {
// Don't run on parents of variations,
// function will already check variations separately
if ( $product->is_type( 'variable' ) ) {
return $purchasable;
}
// Get the ID for the current product (passed in)
$product_id = $product->get_id();
// return false if the customer has bought the product / variation
if ( wc_customer_bought_product( wp_get_current_user()->user_email, get_current_user_id(), $product_id ) ) {
$purchasable = false;
}
return $purchasable;
}
add_filter( 'woocommerce_is_purchasable', 'sv_disable_repeat_purchase', 10, 2 );
/**
* Shows a "purchase disabled" message to the customer
*/
function sv_purchase_disabled_message() {
global $product; // get the current product to see if it has been purchased
if ( $product->is_type( 'variable' ) ) {
foreach ( $product->get_children() as $variation_id ) {
// Render the purchase restricted message if it has been purchased
if ( wc_customer_bought_product( wp_get_current_user()->user_email, get_current_user_id(), $variation_id ) ) {
sv_render_variation_non_purchasable_message( $product, $variation_id );
}
}
} else {
if ( wc_customer_bought_product( wp_get_current_user()->user_email, get_current_user_id(), $product->get_id() ) ) {
echo '<div class="woocommerce"><div class="woocommerce-info wc-nonpurchasable-message">You\'ve already purchased this product! It can only be purchased once.</div></div>';
}
}
}
add_action( 'woocommerce_single_product_summary', 'sv_purchase_disabled_message', 31 );
/**
* Generates a "purchase disabled" message to the customer for specific variations
*
* #param \WC_Product $product the WooCommerce product
* #param int $no_repeats_id the id of the non-purchasable product
*/
function sv_render_variation_non_purchasable_message( $product, $no_repeats_id ) {
// Double-check we're looking at a variable product
if ( $product->is_type( 'variable' ) && $product->has_child() ) {
$variation_purchasable = true;
foreach ( $product->get_available_variations() as $variation ) {
// only show this message for non-purchasable variations matching our ID
if ( $no_repeats_id === $variation['variation_id'] ) {
$variation_purchasable = false;
echo '<div class="woocommerce"><div class="woocommerce-info wc-nonpurchasable-message js-variation-' . sanitize_html_class( $variation['variation_id'] ) . '">You\'ve already purchased this product! It can only be purchased once.</div></div>';
}
}
}
if ( ! $variation_purchasable ) {
wc_enqueue_js("
jQuery('.variations_form')
.on( 'woocommerce_variation_select_change', function( event ) {
jQuery('.wc-nonpurchasable-message').hide();
})
.on( 'found_variation', function( event, variation ) {
jQuery('.wc-nonpurchasable-message').hide();
if ( ! variation.is_purchasable ) {
jQuery( '.wc-nonpurchasable-message.js-variation-' + variation.variation_id ).show();
}
})
.find( '.variations select' ).change();
");
}
}
Gist snippet got from here - please check