Activerecord send to belongs_to relationship

Hi folks, I’m parameterizing a bunch of lookups in a model, and I’m running into a limitation to activerecord’s send method. Account and Person are two models with a belongs_to/has_many relationship.

record = AccountGroup.first

puts record.ugid

puts record.send(‘ugid’)

puts record.person.firstname

puts record.send(‘person.firstname’)

The first three lookups work, but the last one fails with a ‘method missing’ error. Of course “puts record.send(‘person’).send(‘first’)” works, but I can’t parameterize that form.

Anyone have any suggestions for this? eval is always an option, but I’d like to avoid it if possible. Thanks much!

David

Have you tried something like this:

keys = "person.firstname"
keys.split(".").reduce(record) { |value, key| value.send(key) }

Although you should be careful because with the origin of those keys.

Benito, that’s genius. I hadn’t thought of using reduce for this. Thanks!