John Davidson

Message:

I am allowing a user to generate a receipt in PDF format and download. user can download the pdf and then take as many prints as he wants. i want to disallow a user to reprint the receipt.

if i do not allow to generate PDF instead i force user to print directly from browser printing but browser also gives an option to download PDF.

Any solution ?

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My Answer:
One way to disallow reprinting of receipts in Yii2 is to implement a one-time access token system.

When the user generates the receipt in PDF format, you can generate a unique access token and store it in the database along with the receipt details. When the user downloads the PDF, the access token is marked as used in the database.

If the user tries to access the receipt again with the same access token, you can check if the token has already been used and prevent the user from accessing the receipt again.

This way, the user will only be able to download and print the receipt once.

You can also implement a time limit for accessing the receipt, after which the access token expires and the user cannot access the receipt again.

This solution will prevent users from reprinting the receipt multiple times.