I do something similar in 
http://groups.google.com/group/django-users/browse_thread/thread/14e580f3dd32e87d#

Do you want a comma delimited list of barcodes? Assuming the barcode
value is another field, you may be able to reuse some of my code but
override the RawIdField instead of Field.


On Apr 15, 9:19 am, Alfonso <allanhender...@gmail.com> wrote:
> Is there an easy way to change the raw_id_field in a foreign key
> relationship?  I'd like to change an inline formset to display not the
> item pk id alongside the raw_id_field 'magnifying glass' but a barcode
> field instead.
>
> Thanks
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