Proper use of "send" method

Rails
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

On 2/12/07, Thushan [email protected] wrote:

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

George O. wrote:

Hi Thushan,

Try:

@main_service.send(“travel_service=”, TravelService.new)

That’s nice and all, but why on earth would you do this?

@main_service.travel_service = TravelService.new

seems much much simpler.

5

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).

On Feb 12, 10:41 pm, Alex W. [email protected]