How to generate EAN13 barcode with any number of digits from 1 to 12

[Evgeniy Martynenko]

I want to use the 'barby' gem in my application and I need to generate barcode from any number of digits from 1 to 12.
How can I do that?
Thank you!

Regards Evgeniy.

[Tore Darell]

EAN-13 must have 12 digits, so you'll have to zero-pad your numbers.

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[Evgeniy Martynenko]

I know, but this barcode will have used for own purposes of customer.
I tried to modify ean_13.rb in such way:
---------------------
FORMAT = /^\d{1,12}$/
---------------------
def left_numbers
    numbers.length == 12 ? numbers[1,6] : numbers[0,(numbers.length/2.0).ceil]
end
---------------------
def right_numbers
    numbers.length == 12 ? numbers_with_checksum[7,6] : numbers_with_checksum[numbers.length/2, numbers.length]
end
---------------------
But it seems to work a bit wrong for odd number of digits.
How can I change code else for more or less right generator working?

вторник, 14 мая 2019 г., 20:04:51 UTC+3 пользователь Tore Darell написал:

EAN-13 must have 12 digits, so you'll have to zero-pad your numbers.

On Tue, May 14, 2019 at 6:33 PM Evgeniy Martynenko <mspru...@gmail.com> wrote:

I want to use the 'barby' gem in my application and I need to generate barcode from any number of digits from 1 to 12.
How can I do that?
Thank you!

Regards Evgeniy.

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To unsubscribe from this group and stop receiving emails from it, send an email to ruby-...@googlegroups.com.

[Tore Darell]

You can't, it must be 12 digits or it's not EAN-13. If you explain why you're trying to do this maybe I can suggest a different solution.

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