ruby on rails - Define another attribute in setter -

i want define role attribute in user model when set physician attribute, know attribute defined user instance has role of :physician (as enum).

it works role defined, role wrongly assigned enum type shown in rspec test

enum role: [:assistant, :physician, :patient]  def physician=(value)     write_attribute(:role, "physician")     super(value) end 

rspec:

user physician should physician      failure/error: expect(user.role).to eq('physician')         expected: "physician"             got: "assistant"         (compared using ==)      # ./spec/models/user_spec 

in fact tried replicate manually in rails console

user = user.new physician = physician.new  user.physician = physician user.physician?  => false user.role  => "assistant" 

i suspect write_attribute not work nicely enums...

p.d. tried write_attribute(:role, :physician) sets role value nil

i think it's fixed with:

def physician=(value)     self.send("role=", "physician")     super(value) end 

but i'm not sure if it's idea call send directly this