Dear all
I have the following 2 models, with 2 difference data sources. I would
like to create a has_many relation to SX1::Request
pat = SX9::Patient.find("123456789")
>> pat.pat_encounter_group
=> 99999
By default, rails will use the PK(Primary Key) of SX9::Patient then pass
to SX1::Request. e.g.
SELECT * FROM request WHERE (request.req_encounter_group = "123456789")
What I am expected is to override the primary_key in SX9::Patient
has_many relation with :primary_key => "pat_encounter_group". i.e.
SELECT * FROM request WHERE (request.req_encounter_group = 99999)
But I failed to do...
Luckily, I can achieve this by defining a instance method. e.g.
def find_request_by_pat_encounter_group
SX1::Request.find_all_by_req_encounter_group(self.pat_encounter_group)
end
My question, is it possible to do this in has_many relationship? Thank
you.
module SX9
class Patient < RemoteSX9Model
set_table_name "patient"
set_primary_key "pat_encounter"
# I tried this but failed
has_many :requests, :class_name => "SX1::Request", :primary_key =>
"pat_encounter_group", :foreign_key => "req_encounter_group"
end
end
module SX1
class Request < RemoteSX1Model
set_table_name "request"
set_primary_key "req_reqno"
end
end
Thank you very much
Valentino
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