Barby is a great gem for generating a barcode or QR code. You can choose to output it as any number of barcode types or as a QR code. This example will use a QR code but I have successfully used the Code128 barcode which is fairly common in the retail space.
Add Barby to your gem file:
Here is an example helper for generating the QR code as base64 encoded png data:
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And an example call from your view:
So far so good, That’s it!!! See ya!!! :)