Preventing payment authorization

To run a check before authorizing the payment in PayPal, use the beforePay hook. This hook should return false to prevent the payment or true to proceed. Example using the PaymentPaypalExpressProvider component:

<template>
  <PaymentPaypalExpressProvider 
    :afterPay="afterPayAndOrder"
    :afterRedirect="toggleCartSidebar"
    :useConfirmationPage="false"
    :beforePay="shouldAllowAuthorizePayment"
  />
</template>

Example using the PaymentPaypalProvider component:

<template>
  <PaymentPaypalProvider 
    :afterPay="afterPayAndOrder"
    :beforePay="shouldAllowAuthorizePayment"
  />
</template>

You can use the payment-refused-by-beforePay slot to customize the error message:

<template>
  <PaymentPaypalProvider
    :afterPay="afterPayAndOrder"
    :beforePay="shouldAllowAuthorizePayment"
  >
    <template #payment-refused-by-beforePay>
      My custom message!
    </template>
  </PaymentPaypalProvider>
</template>

Using Express checkout with a confirmation page

Suppose you want to prevent payment authorization in this scenario. In that case, you should add the corresponding code at the very beginning of processExpressOrder function from this part of another document.