Proper use of "send" method

rubyonrails-talk
1

I have the following models:

class MainService < ActiveRecord::Base   has_one :travel_service end

class TravelService < ActiveRecord::Base   belongs_to :main_service end

I can use the following:

@main_service.travel_service = TravelService.new

But I can't use the following: @main_service.send("travel_service") = TravelService.new

It says " unexpected '=', expecting $ "

What's the correct way of using the "send" method? (I think this is mainly due to my bad ruby knowledge :frowning: )

Thanks in advance for any help.

2

But I can't use the following: @main_service.send("travel_service") = TravelService.new

It says " unexpected '=', expecting $ "

Hi Thushan,

Try:

  @main_service.send("travel_service=", TravelService.new)

#send is a plain old method, and can't be called on the LHS of an assignment. The method you want to send is "travel_service=", with TravelService.new as an argument.

Thanks in advance for any help.

'Welcome! George.

3

Thanks (again) George. That worked.

4

Actually, what I want is this:

@main_service.send(service_type, TravelService.new)

Where service_type may contain sevral other service types (including travel_service). All those service types belongs_to MainService (and MainService has_one of each of them).