/**
  * Checks if the store manager has requested the current product be limited to one purchase
  * per customer, and if so, checks whether the customer already has an active subscription to
  * the product.
  *
  * @access public
  * @return bool
  */
 function is_purchasable()
 {
     $purchasable = parent::is_purchasable();
     if (true === $purchasable && false === WC_Subscriptions_Product::is_purchasable($purchasable, $this)) {
         $purchasable = false;
     }
     return apply_filters('woocommerce_subscription_is_purchasable', $purchasable, $this);
 }
 /**
  * Checks if the store manager has requested the current product be limited to one purchase
  * per customer, and if so, checks whether the customer already has an active subscription to
  * the product.
  *
  * @access public
  * @return bool
  */
 function is_purchasable()
 {
     $purchasable = parent::is_purchasable();
     if (true === $purchasable && 'no' != $this->limit_subscriptions && is_user_logged_in() && ('active' == $this->limit_subscriptions && WC_Subscriptions_Manager::user_has_subscription(0, $this->id, 'on-hold') || WC_Subscriptions_Manager::user_has_subscription(0, $this->id, $this->limit_subscriptions)) && false === strpos($_SERVER['REQUEST_URI'], 'order-received')) {
         // we can't use is_order_received_page() becuase get_cart_from_session() is called before the query vars are setup
         $purchasable = false;
     }
     return apply_filters('woocommerce_subscription_is_purchasable', $purchasable, $this);
 }
 /**
  * Checks if the store manager has requested the current product be limited to one purchase
  * per customer, and if so, checks whether the customer already has an active subscription to
  * the product.
  *
  * @access public
  * @return bool
  */
 function is_purchasable()
 {
     $purchasable = parent::is_purchasable();
     if (true === $purchasable && 'yes' == $this->limit_subscriptions) {
         if (WC_Subscriptions_Manager::user_has_subscription(0, $this->id, 'active')) {
             $purchasable = false;
         }
     }
     return apply_filters('woocommerce_subscription_is_purchasable', $purchasable, $this);
 }