Forum: Ruby on Rails validates_presence_of foreign key

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Kim (Guest)
on 2007-04-26 02:16
(Received via mailing list)
Does validates_presence_of work for foreign keys?

I have a Service model the belongs to Agent I then have
validates_presence_of  :title, :locator, :agent_id, :user_id
in my model.

But I can create Services with out choosing an agent and it saves and
validates just find. Why??? Why doesn't the validates_presence_of
prohibit the service from being created without an agent?

Here is my relevant create code:
   unless  params[:agent]||params[:agent] == "-- Select an Agent --" #
check if an agent was choosing
     agent = Agent.find(params[:agent]) #find the agent
     @service.agent_id = agent.id #assign the agent to the service
    end
    if @service.save
    #do stuff

How do I make sure that the service has an agent before it is created?

Thanks in advance, K
Kim (Guest)
on 2007-04-26 03:35
(Received via mailing list)
Bumpty Bump
Robert W. (Guest)
on 2007-04-26 04:05
(Received via mailing list)
Try validating against the the association rather than the foreign
key.

class Service < ActiveRecord::Base
  belongs_to :agent
  validates_presence_of :agent
end
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